Hepatoma Res 2017;3:58-66.10.20517/2394-5079.2017.05© 2017 OAE Publishing Inc.
Open AccessOriginal Article

Late recurrence of hepatocellular carcinoma after liver transplantation

1Department of Surgery, University of Hawaii School of Medicine, Honolulu, HI 96813, USA.

2The Queens Medical Center, Honolulu, HI 96813, USA.

Correspondence Address: Prof. Linda L. Wong, Department of Surgery, University of Hawaii School of Medicine, 550 S. Beretania Street, Suite 403, Honolulu, HI 96813, USA. E-mail:


    This is an open access article distributed under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike 3.0 License (, which allows others to remix, tweak and build upon the work non-commercially, as long as the author is credited and the new creations are licensed under the identical terms.


    Aim: Hepatocellular carcinoma (HCC) is the third leading cause of cancer deaths worldwide and liver transplant (LT) prolongs survival. However, 15-20% will experience recurrent HCC, most occurring within 2 years of LT. HCC patients with late recurrences (> 5 years after LT) may have distinctive clinical/biological characteristics.

    Methods: A retrospective review was conducted of 88 patients who underwent LT for HCC during 1993-2015, analyzing demographics, clinical factors, explant pathology, and outcome.

    Results: Median follow-up was 6.4 years. HCC recurred in 15 (17.0%) patients with mean time to recurrence of 3.96 ± 3.99 years. Five patients reoccurred > 5 years post-LT. All late recurrences involved males in their 50s, recurring at 8.5 years on average. Recurrences occurred in chest wall (2), liver (2), lung (2), bone (1) and pelvis (1), with multifocal involvement in 2 patients. Four patients died within 18 months of late recurrence. The fifth patient is alive after ablation of liver recurrence and treatment with sorafenib and everolimus.

    Conclusion: One-third of post-LT patients with recurrent HCC experienced late recurrence. Although the sample size makes it difficult to identify significant risk factors, this study highlights the importance of long-term follow-up and need for biomarkers to identify patients at risk for late recurrences.


    Hepatocellular carcinoma (HCC) is the most common primary liver cancer with 782,000 new cases and 745,000 deaths annually worldwide.[1] The best treatments for HCC include liver resection and liver transplantation (LT). However, most patients present at advanced stage and are not candidates for these potentially curative therapies. LT, although limited by the shortage of donor livers, has superior disease-free survival, with improved 5-year survival of 70% compared to 10% in untreated HCC.[2] Despite receiving optimal therapy with transplantation, up to 20% of patients may experience recurrent HCC. Most of these recurrences occur within 2 years following transplantation. Although there are no clear guidelines on how to treat these recurrences, surgical resection is the preferred treatment option. Other locoregional therapies such as radiofrequency ablation (RFA) and transarterial chemoembolization (TACE) may be options, and sorafenib can be considered for more diffuse, unresectable disease.[3,4]

    Unfortunately there is little evidence of the survival benefits following treatment for recurrent HCC following transplant. In addition, few studies have examined risk factors in recurrent HCC after transplant or prognostic factors for survival after recurrence. Moreover, while tumor recurrence tends to happen within the first two years following transplantation, late recurrence can occur and the pathobiology underlying these cases is not well understood. This study aims to identify and characterize cases of late recurrent HCC after transplantation in Hawaii, a state with a high burden of liver disease and cancer due to a large population of Asians and Pacific Islanders with viral hepatitis.[5-7]


    This is a retrospective analysis of 88 patients who underwent LT for HCC from 1993 to 2015. All patients were referred to a group of physicians associated with the medical center with the only LT program in the state of Hawaii. It is also the primary referral center for hepatobiliary surgery for American Samoa, Guam, Saipan, and the Marshall Islands. This clinic and the transplant center were initially affiliated with Hawaii Medical Center-East (formerly St. Francis Medical Center) and after 2012, the Queens Medical Center. This center sees about 60-70% of the HCC cases in Hawaii. This study was approved by the University of Hawaii Institutional Review Board.

    HCC was diagnosed histologically by percutaneous biopsy or at surgery. The diagnosis of HCC was made with only imaging if a contrast-enhanced study [dynamic computed tomography (CT) or magnetic resonance imaging (MRI)] showed typical arterial enhancement with “washout” in the venous phase as described by the American Association for the Study of Liver Disease guidelines.[8] All patients received transplant livers from deceased donors. For immunosuppression after LT, patients all received basiliximab for induction, steroids, tacrolimus, and mycophenolate mofetil. All patients were weaned off of steroids after 6 months and maintenance immunosuppression was continued with tacrolimus or tacrolimus/mycophenolate.

    Information on demographics, medical history, laboratory results, tumor characteristics, treatment, and survival was collected via clinical interviews. Demographic data included age, gender, birthplace, and the patient’s self-reported ethnicity. Data collected on medical history included diabetes mellitus, hyperlipidemia, smoking, and risk factors for HCC including viral hepatitis, alcohol abuse (defined as greater than 2 alcoholic beverages daily for at least 10 years), and other chronic liver diseases. Information was based on available medical records and interviews by a single physician.

    Laboratory data collected included serum bilirubin, albumin, prothrombin time, creatinine, alanine aminotransferase, aspartate aminotransferase, platelet count and alpha-fetoprotein (AFP). Laboratory data that was used for the study had been obtained within 2 weeks of initial visit or drawn at the time of the visit. Serum bilirubin, prothrombin time with international normalized ratio (INR) and creatinine were used to calculate the Model for End-stage Liver Disease (MELD) score. Dynamic imaging with CT or MRI was performed to determine if Milan criteria were met (single tumor ≤ 5 cm or up to 3 tumors ≤ 3 cm each, no vascular invasion, no extrahepatic spread). Patients who met Milan criteria initially or who could be downstaged with locoregional therapy to meet Milan criteria were considered for liver transplantation.

    We also noted the type of locoregional therapy that was performed before LT including RFA and TACE. Pathology reports were also examined to determine the size and number of HCC lesions present, the amount of tumor necrosis, the location of tumors, and presence of vascular invasion.

    Data analysis was performed using Microsoft Excel and Statistical Package for the Social Sciences software to identify potential predictors for recurrent HCC. Fisher’s and chi-square analysis was performed and P values < 0.05 were considered significant.

    Five patients were identified as having a “late” recurrence, defined as the diagnosis of HCC occuring more than 5 years after the date of LT. Late recurrence cases were examined in detail for post-LT course, use of immunosuppression, site of recurrence, treatment for recurrence, and response to treatment.


    Of 1,200 patients in our database of patients treated for HCC, 88 underwent LT for HCC and had the following characteristics were shown in Table 1: mean age 56.6 years, 83% male, 54.5% Asian, 10.2% Pacific Islanders, 58% hepatitis B positive, 61.4% hepatitis C positive, 30.7% with diabetes, and 46.6% with normal AFP (< 20). Locoregional therapy was performed in 67 patients (76.1%) with 26 receiving only RFA and 17 received only TACE. Cases with single tumors less than 2.5 cm in easily accessible locations were chosen for RFA. Cases with larger tumors and multiple tumors were treated with TACE. Median duration of follow-up was 6.4 years (mean 6.8 years, range 8 days-17.2 years).

    Table 1

    Baseline characteristics of patients in study (n = 88)

    CharacteristicsData, n (%)
    Age, years, mean ± SD (range)56.6 ± 6.1 (41-72)
    Males73 (83.0)
     Asian48 (54.5)
     Pacific Islanders9 (10.2)
     Black1 (1.1)
     Hispanic2 (2.3)
     White26 (29.5)
     Mixed2 (2.3)
    Hepatitis B51 (58.0)
    Hepatitis C54 (61.4)
    Diabetes27 (30.7)
    AFP, mean ± SD669.7 ± 3,739.6
    Patients receiving locoregional therapy67 (76.1)
    RFA only26 (29.5)
    TACE only17 (19.3)

    Univariate analysis suggested the presence of microvascular invasion as seen on pathology and size of the largest tumor in the explant to be predictors of recurrence of HCC after transplant. Other factors including age, gender, race, presence of hepatitis B or C, diabetes, AFP level, locoregional treatment, and presence of 4 or more tumors in the explanted liver did not predict recurrence [Table 2].

    Table 2

    Characteristics of patients with recurrence vs. without recurrence, n (%)

    CharacteristicsRecurrence (n = 15)No recurrence (n = 73)P value
    Age, years, mean ± SD58.1 ± 3.156.3 ± 6.50.30
    Males11 (73.3)62 (85.0)0.28
    Asians10 (66.7)38 (52.1)0.40
    Hepatitis B8 (53.3)21 (28.8)0.08
    Hepatitis C7 (46.7)47 (64.4)0.25
    Diabetes6 (40.0)21 (28.8)0.54
    Imaging: largest tumor size, cm, mean ± SD3.1 ± 1.22.9 ± 1.30.60
    Explant: largest tumor size, cm, mean ± SD3.9 ± 2.02.4 ± 1.20.001
    Explant: largest tumor > 3 cm6/11* (54.5)19/66* (28.8)0.16
    Imaging: no. of tumors, mean ± SD1.2 ± 0.61.3 ± 0.60.60
    Explant: no. of tumors, mean ± SD3.1 ± 3.62.0 ± 1.90.13
    Explant: > 4 tumors5/13* (38.5)10/67* (15.0)0.06
    Well differentiated tumor2/13* (15.4)15/58* (25.9)0.72
    Met milan criteria13 (86.7)57/72* (79.2)0.73
    AFP at diagnosis, ng/mL, mean ± SD829.9 ± 2,401.1637.7 ± 3,966.10.86
    AFP > 500 ng/mL2/147/700.64
    AFP > 1,000 ng/mL2/145/700.33
    Lab MELD score, mean ± SD11 ± 3.912 ± 3.80.74
    Received locoregional therapy12 (80.0)55 (75.3)1.00
    Waiting time (from diagnosis to LT), days, mean ± SD193.4 ± 163.9315.8 ± 367.30.21
    Explanted liver met Milan criteria7/13* (53.8)47/67* (70.1)0.33
    Explanted liver with microvascular invasion5/13* (38.5)1/59* (1.7)0.001

    Recurrent HCC occurred in 15 cases (17.0%) with mean time to recurrence of 3.96 ± 3.99 years. Seven patients recurred within 2 years and 5 recurred > 5 years post-LT. All late recurrences involved males in their 50s, recurring at a mean 8.5 years (range 5.2-13.4 years). Explanted livers showed 1 with vascular invasion, 2 with > 4 tumors and 2 with single tumors. Recurrences occurred in chest wall (2), liver (2), lung (2), bone (1) and pelvis (1), with 2 patients having recurrent tumors in multiple sites. Four patients died within 18 months of late recurrence. The fifth patient is alive for 3 years after ablation of liver recurrence and treatment with sorafenib and everolimus. Table 3 lists details of the late recurrence cases and Table 4 shows a comparison of early and late recurrence cases. Clinical summaries of the 5 cases of late recurrence are reported below.

    Table 3

    Late recurrence cases (more than 5 years after LT)

    Age/genderTime to recurrence (years)Site of recurrencePreop biopsyAFP pre- LT (ng/mL)ESLDSize of largest tumor on imaging (cm)Explant vascular invasionExplant with 4+ tumorsTreatment of recurrenceStatus after recurrence
    53/M11.3Chest wall, liver, lungYes2,387HBV3.4NoYesResect chest wall mass, left liver, everolimusDeceased, 8 months
    57/M5.9Chest wallYes34HCV2NoNoResect chest wall, radiationDeceased, 12 months
    59/M5.2Pelvic mass, boneYes7NASH4YesNoResect pelvic mass, sorafenibDeceased, 18 months
    58/M6.6LiverYes46HCV2.3NoNoRFA, everolimus, sorafenibLiving, 44 months
    59/M13.4LungNo10.2HBV2.2NoYesNoneDeceased, 2 months
    Table 4

    Characteristics of patients with early recurrence vs. late recurrence on initial presentation, n (%)

    CharacteristicsEarly recurrence (n = 10)Late recurrence (n = 5)P value
    Age, years, mean ± SD58.7 ± 3.457 ± 2.50.34
    Males6 (60.0)5 (100.0)0.23
    Asians7 (70.0)3 (60.0)1.00
    Hepatitis B6 (60.0)2 (40.0)0.61
    Hepatitis C5 (50.0)2 (40.0)1.00
    Diabetes4 (40.0)2 (40.0)1.00
    Imaging: largest tumor size, cm, mean ± SD3.3 ± 1.32.8 ± 0.90.48
    Explant: largest tumor size, cm, mean ± SD4.7 ± 2.02.3 ± 1.00.05
    Explant: largest tumor > 3 cm5/8* (62.5)1/4* (25.0)0.55
    Imaging: no. of tumors, mean ± SD1.2 ± 0.61.2 ± 0.51.00
    Explant: no. of tumors, mean ± SD3.3 ± 4.32.8 ± 2.90.82
    Explant: > 4 tumors3/8* (37.5)2 (40.0)1.00
    Well differentiated tumor0/8* (0)2 (40.0)0.13
    Met milan criteria9 (90.0)4 (80.0)1.00
    AFP at diagnosis, ng/mL, mean ± SD1,014.9 ± 2,950.0496.8 ± 1,056.80.72
    AFP > 500 ng/mL1/9*11.00
    AFP > 1,000 ng/mL1/9*11.00
    Lab MELD score, mean ± SD12 ± 4.211 ± 3.50.71
    Received locoregional therapy9 (90.0)3 (60.0)0.24
    Waiting time (from diagnosis to LT), days, mean ± SD222.6 ± 185.2135.0 ± 102.00.35
    Explanted liver met Milan criteria3/8* (37.5)4 (80.0)0.27
    Explanted liver with microvascular invasion4/8* (50.0)1 (20.0)0.56

    Case 1

    The first case is a 53-year-old Chinese male with hepatitis B cirrhosis and 2 liver masses (3.4 and 2.1 cm). AFP was 2,397 ng/mL and liver biopsy showed a well-differentiated HCC. He underwent RFA followed by TACE and LT 1 month later. The explanted liver showed multifocal HCC without microvascular invasion including 4.5 cm, 3.0 cm and 1.8 cm masses with 95-100% necrosis, and a 1.8 cm caudate lobe mass with 10% necrosis.

    Immunosuppression consisted of steroids, mycophenolate, and tacrolimus with eventual wean to tacrolimus monotherapy. Hepatitis B was controlled with monthly hepatitis B immune globulin injections and lamivudine, but he was eventually switched to adefovir and then tenofovir. Seven years post-LT, he was found to have a hepatitis B surface Ag escape mutant.

    Eleven years post-LT, the patient noted a prominent xiphoid process. CT scan showed an 8.9 cm mass involving the left lobe of the liver, xiphoid and anterior chest wall. AFP was 60,000 ng/mL and bone scan was negative. He underwent en-bloc resection of recurrent HCC with partial resection of the diaphragm, pericardium, pleural and sternum, and left lateral segment of liver. After surgery, he was given sorafenib and immunosuppression was changed to very low dose tacrolimus and everolimus 0.5 mcg twice daily. His AFP reached a nadir of 1,097 ng/mL, but then increased to 60,000 ng/mL. He eventually developed lung metastases and died 8 months after the surgery.

    Case 2

    This patient was a 57-year-old Caucasian male who presented with decompensated hepatitis C cirrhosis and a 2.3 cm well-differentiated HCC. He underwent RFA via an intercostal approach at the right upper abdomen/chest wall. Seven months after the biopsy, the patient underwent LT. Explanted liver demonstrated 2 well differentiated HCC in the right lobe (1.5 cm and 1.0 cm) with 60% necrosis and 3 non-necrotic satellite nodules measuring 0.2 to 0.3 cm. No microvascular invasion was noted.

    Four years after LT, the patient was found to have 1.1 cm solid nodule in the right chest wall at the 8th rib. Needle biopsy showed necrosis and fibroinflammatory tissue reaction with a focus of metastatic HCC. Complete wide excision of this mass showed no additional HCC. Long-term immunosuppression consisted of low dose tacrolimus.

    Six years post-LT, he developed another 2.4 cm soft tissue mass in the right lateral chest wall. This was thought to be a needle tract seeding of tumor related to a previous biopsy and RFA. Wide surgical resection was performed and revealed metastatic HCC with necrosis.

    Seven years post-LT, he developed a persistent cough and CT scan showed a 1.8 cm mass in the left lower lung and AFP was 3 ng/mL. He underwent a left thoracotomy and wedge excision of a 1.7 cm moderately differentiated squamous cell lung cancer (node negative). No additional therapy was given for his lung cancer.

    He was disease free from both lung cancer and HCC up until 9 years post-LT when he began to complain of right rib pain. AFP was 140 ng/mL. CT scan showed a multilobulated mass in the right chest wall involving the 8th and 9th ribs and adjacent diaphragm, which was separate from the liver. He underwent radiation and refused sorafenib. He eventually expired from this 1 year later.

    Case 3

    The third case is a 59-year-old Japanese male with non-alcoholic steatohepatitis with variceal bleeding episode. He was found to have a 3 cm liver mass and biopsy showed poorly differentiated HCC. Within 4 months of diagnosis, he received LT. His explanted liver showed a 3.8 cm moderately differentiated HCC with lymphovascular invasion. Immunosuppression consisted of basiliximab, steroids, mycophenolate mofetil and tacrolimus. Maintenance immunosuppression was with low dose tacrolimus.

    Five years after transplant, a routine AFP was noted to be 70 ng/mL. His AFP continued to increase but multiple imaging tests were negative. A few months later, repeat CT scan showed a 3 cm mass in the pelvis between the internal and external iliac arteries. He underwent surgical resection and pathology showed a 5.3 cm HCC.

    Post-operatively, his immunosuppression was changed to very low dose tacrolimus and sirolimus. Sorafenib was also added. His AFP continued to increase and he also developed skeletal metastases. He expired 18 months after recurrence of HCC.

    Case 4

    The next case is a 66-year-old Puerto-Rican male with hepatitis C cirrhosis and a 2.3 cm mass adjacent to the inferior vena cava. AFP was 46 ng/mL. Liver biopsy demonstrated HCC and he underwent TACE followed by LT 4 months later. The explanted liver showed a 2.0 cm moderately differentiated HCC with 20% necrosis and no vascular invasion. Immunosuppression consisted of basiliximab, steroids, mycophenolate, and tacrolimus; he was gradually weaned to tacrolimus monotherapy.

    Six years after transplant, AFP was noted to be 216 ng/mL. CT scan showed a nonspecific 1.0 cm hypovascular lesion in the left lobe which increased to 2.2 cm on subsequent imaging. Immunosuppression was changed to very low dose tacrolimus and everolimus 0.5 mg bid. Sorafenib was also added. He underwent RFA and subsequent CT scan showed no new lesions, but AFP increased to 10,385 ng/mL 1 month later. MRI scan showed a suspicious 5.4 cm mass in the left lobe. Stereotactic body radiation (SBRT) was planned and AFP decreased to 8,243 ng/mL. When he arrived for SBRT simulation, the lesion could not be found. AFP decreased to 2.1 ng/mL. CT scan now showed no liver lesion and resolution of the previously seen liver mass. All subsequent AFP tests have been normal. His hepatitis C was successfully treated with sofosbuvir and simepravir. He is currently on everolimus and sorafenib and has no evidence of liver disease on imaging 44 months after diagnosis of recurrent HCC.

    Case 5

    The final case is a 59-year-old Korean male with end stage liver disease due to hepatitis B. During the LT evaluation, he was found to have a 2.2 cm hypervascular mass. AFP was 10.2 ng/mL. He underwent LT without any locoregional therapy preoperatively. The explanted liver showed a multifocal HCC with at least 7 lesions. Immunosuppression consisted of tacrolimus and steroids.

    Post-LT, he had no episodes of rejection, infection, or liver dysfunction. His hepatitis B was well-controlled with lamivudine and hepatitis B immune globulin injections. Approximately 13.5 years after LT, he complained of persistent cough and was found to have a large pleural effusion. CT scan showed multiple small pulmonary nodules and hilar/mediastinal lymphadenopathy. CT guided biopsy of a chest wall mass showed metastatic HCC. A video-assisted thoracoscopy and pleurodesis was performed. The patient opted not to have any further treatment and died in hospice about 2 months after diagnosis of recurrent HCC.


    LT is the best treatment for localized HCC in terms of long-term disease free survival. Despite this, patients do have a chance of recurrent HCC that varies from 1.3% to 44.9% depending on individual series.[9,13] Multiple studies have determined that microvascular invasion, poor tumor grade, larger tumor diameter, and higher AFP are associated with increased recurrence after transplant.[14-18] Other factors that have been reported to contribute include age, bilobar involvement, multiple lesions, absence of necrosis, tumor beyond Milan criteria, elevated neutrophil-to-lymphocyte ratio, microsatellitosis, and previous liver resection.[19-22] Two studies have found that the time between LT and HCC recurrence affects prognosis, with worse outcomes associated with early recurrence within 2 years.[23,24]

    Once a patient develops a recurrence after transplant, prognostic factors associated with decreased survival include major vascular invasion, poorly-differentiated tumor, unresectable disease, and bone metastases.[4,25] Our small study is consistent with these larger studies in that larger tumors and microvascular invasion on the explanted liver were associated with increased recurrence. Four patients with late recurrence died within 18 months, suggesting that although their initial course after transplantation appeared to be favorable, recurrence at any time threatens survival.

    Recurrent HCC tends to occur early or within 2 years of LT. There have been reported cases of recurrent HCC beyond 5 years; however these cases may become more prevalent as more patients are living longer after LT for HCC. Table 5 demonstrates the current literature on recurrence after LT for HCC, which may suggest a trend toward a higher proportion of recurrences with longer follow-up when all cases are considered.[26-30] Castroagudin et al.[31] in 165 cases, reported a 10.9% recurrence with 78% of these recurrences occurring within the first 3 years, but they had 3 recipients that had recurrences after 7, 9, and 10 years. In our study, the recurrence rate was 17% with a third of our recurrence cases occurring beyond 5 years.

    Table 5

    Review of literature on the incidence of recurrence of HCC after LT

    AuthorsYearAreaNo. of LT patientsRecurrence rateMedian follow-upMean follow-up
    Roayaie et al.[4]2004USA (NY)31118.3%51.9 months
    Hwang et al.[9]2011Korea871.3%75 months
    Lee et al.[10]2014Korea6944.9%24.5 months
    Schraiber et al.[11]2016Brazil20615.5%43.6 months49.8 months
    Hanouneh et al.[12]2011USA (OH)9213.0%19.5 months
    Andreou et al.[13]2016Germany36425.0%78 months
    Kondili et al.[14]2007UK10411.5%36 months47 months
    Escartin et al.[15]2007Spain18415.2%
    Varona et al.[16]2015Spain1097.0%42 months
    Lai et al.[19]2013Italy, Brussels42214.5%4.9 years
    Agopian et al.[20]2015USA (CA)86513.5%29.7 months
    Parfitt et al.[21]2007Spain7526.7%8 years
    Chok et al.[23]2011Hong Kong13917.3%55 months
    Zou et al.[26]2008China30315.8%
    Rodriguez-Peralvarez et al.[27]2013Spain21917.6%51 months
    Nissen et al.[28]2011USA (CA)12210.7%32.7 months
    Pfiffer et al.[29]2011Germany13917.3%37.2 months
    Marelli et al.[30]2008UK10018.0%29 months
    Sharma et al.[40]2012USA (MI)9418.0%2.2 years
    Wai et al.[41]2012Singapore7738.0%953 days
    Iacob et al.[42]2013Romania3813.2%22 months

    In terms of the site of recurrence, most of the cases of recurrent HCC after LT have been reported to involve extrahepatic (38.5-53%) or both extrahepatic and intrahepatic sites (31-38.5%). In general, intrahepatic recurrence is more common in cases of early recurrence, while more extrahepatic involvement is seen in cases of late recurrence.[23,32] The lungs are the most common site of extrahepatic involvement, followed by bone involvement. In our late recurrence patients, 4 out of 5 had extrahepatic involvement. Our one case of continued survival after late recurrent HCC (currently over 44 months) had just hepatic involvement. This could potentially be a case of de novo HCC developing in the transplanted liver, the mechanism of which may differ from the biological mechanisms involved in early HCC recurrence.

    Treatment of HCC recurrence after transplant involves surgical resection when possible as it has been shown to be associated with a survival advantage.[4,33] Unfortunately, in many cases, patients present with disseminated disease and surgery is not feasible. Other options for treatment include TACE, RFA, high-intensity focused ultrasound ablation, stereotactic body radiation therapy, and modulation of immunosuppressants.[34] Sorafenib, a multikinase inhibitor that improves progression-free and overall survival in patients with advanced HCC, has also shown promising results in treatment of HCC recurrence post-LT with a modest survival benefit and manageable adverse effects.[35,36] Combination therapy with sorafenib and an mTOR inhibitor such as everolimus has also been used in practice, though longer follow-up studies are needed to assess the benefits versus increased toxicity of such a regimen in recurrent HCC.[37,38] Our 5 patients with late recurrence were treated with various combinations of resection, RFA, sorafenib, and everolimus. Our single surviving patient had undergone ablation, has been on everolimus/sorafenib, and had resolution of a previously seen intrahepatic lesion.

    Once a patient develops recurrence, survival is rather dismal despite efforts to treat these patients. Median survival for patients with recurrence has been reported to be between 8.7 months to 18.3 months from time of recurrence.[4,18,25,33] Our 5 late recurrence cases ranged greatly in survival time after diagnosis of recurrence (2 months-over 44 months).

    Efforts have been made to better identify molecular factors that predict recurrence after liver resection for HCC. Kim et al.[39] in a cohort of 72 patients in Korea performed gene expression studies on archived tissue samples. They identified a 233 gene signature that was significantly associated with late recurrence after liver resection. From this, they also developed and validated a 4 and 20 gene predictors from the full 233 gene predictors, however this was in a population of primarily hepatitis B HCC. Perhaps similar molecular studies are needed, especially in transplant patients to identify those patients with the potential for late recurrence.

    This study is limited by its small sample size and small number of identified cases of late recurrence, which renders it difficult to identify trends and factors that may predispose a patient to develop recurrent HCC. However, our study provides detailed clinical information characterizing five cases of late HCC recurrence after LT, in the hopes that it may benefit other researchers in elucidating the characteristics associated with this fortunately infrequent post-LT complication. A notable observation from this study was that not all of the late recurrences occurred in the liver. This is notable because all the patients underwent LT of primary treatment of HCC. Thus, it can be inferred that the patients experiencing extrahepatic recurrences did so as a consequence of indolent metastases present at the time of transplant. In the 2 cases with intrahepatic recurrence, it is not possible to conclude whether the recurrences were in fact, new tumors arising in the transplanted liver. However, in both cases, patients had difficult to control-viral hepatitis and it is possible that hepatitis and fibrosis predisposed them to recurrent HCC in the liver. Because nearly one-third of our post-LT patients with recurrent HCC experienced recurrence more than 5 years after LT, our study highlights the importance of long-term follow-up with imaging every 6-12 months and the need for biomarkers to identify patients who may be at risk for late recurrences. We encourage future studies to further characterize patients with late recurrence of HCC and perhaps molecular studies could help better identify those patients at greatest risk for recurrence to allow physicians to monitor these patients more vigilantly.

    Authors’ contributions

    Study design: S.A. Kwee, L.L .Wong

    Data analysis: J.A. Zhang

    Manuscript preparation: J.A. Zhang, L.L .Wong

    Critical review of manuscript: S.A. Kwee

    Financial support and sponsorship

    This study was supported by NIH grant 2 P30 CA071789-13.

    Conflicts of interest

    Dr. Wong is on the speaker bureau for Bayer Healthcare. Dr. Kwee and Ms. Zhang have no conflicts of interest to report.

    Patient consent

    This is a retrospective study and the Institutional Review Board did not require patient consent for this study.

    Ethics approval

    This study was approved by the Institutional Review Board at the University of Hawaii.


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    Cite This Article

    Zhang JA, Kwee SA, Wong LL. Late recurrence of hepatocellular carcinoma after liver transplantation. Hepatoma Res 2017;3:58-66.


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