Non-invasive ICG-clearance: a useful tool for the management of hepatic artery thrombosis following liver transplantation

BACKGROUND

The clinical presentation of hepatic artery thrombosis (HAT) post-liver transplantation (LT) varies considerably. Doppler ultrasonography (Doppler US) is the first line investigation, with a diagnostic sensitivity for HAT as high as 92%. Because indocyanine green (ICG) elimination from the blood depends among other factors on the hepatic blood flow, we hypothesized that plasma disappearance rate of indocyanine green (PDR-ICG) can be influenced by the flow in the hepatic artery. Thus, we evaluated the role of PDR-ICG measurement in HAT diagnosis in post-LT patients.

PATIENTS AND METHODS

Fourteen liver transplant patients with no visible flow in the hepatic artery (Doppler US) were identified. Of the 14, seven patients had HAT confirmed by CT-angiography. The PDR-ICG measurement, an investigation routinely used in our center, was performed in all 14 patients.

RESULTS

The PDR-ICG in patients with HAT was significantly lower than in patients without HAT (5.8 ± 4.3 vs. 23.8 ± 7.4%/min, p= 0.0009). In patients with HAT, after the revascularization, the PDR-ICG value increased (5.8 ± 4.3 vs. 15.6 ± 3.5%/min, p = 0.006).

CONCLUSION

The ICG elimination may be an adjunct diagnostic tool in the management of patients with suspected HAT following LT.

Fibrosing cholestatic hepatitis in HIV/HCV co-infected transplant patients-usefulness of early markers after liver transplantation

We characterized fibrosing cholestatic hepatitis (FCH) in a large cohort of HIV/HCV co-infected patients. Between 1999 and 2008, 59 HIV infected patients were transplanted for end-stage liver disease due to HCV. Eleven patients (19%) developed FCH within a mean period of 7 months [2-27] after liver transplantation (LT). At Week 1 post-LT, the mean HCV viral load was higher in the FCH group: 6.13 log(10) IU/mL ± 1.30 versus 4.9 log(10) IU/mL ± 1.78 in the non-FCH group, p = 0.05. At the onset of acute hepatitis after LT, activity was moderate to severe in 8/11 HIV+/HCV+ patients with FCH (73%) versus 13/28 (46%) HIV+/HCV+ non-FCH (p = 0.007) patients. A complete virological response to anti-HCV therapy was observed in 2/11 (18%) patients. Survival differed significantly between the two groups (at 3 years, 67% in non-FCH patients versus 15% in FCH patients, p = 0.004). An early diagnosis of FCH may be suggested by the presence of marked disease activity when acute hepatitis is diagnosed and when a high viral load is present. The initiation of anti-HCV therapy should be considered at this point.

Terminally differentiated CD8 cells in HIV-infected children: HIV-GAG/POL specificity and IFN-γ production

BACKGROUND

CD8 cells are key to antiviral immunity and can be divided by phenotype into early (CD28+ CD27+), intermediate (CD28-CD27+) and terminally differentiated subsets (CD28- CD27-). Despite effective HAART there is an unexplained expansion of CD8+CD28-CD27-T cells in HIV-infected children. The cytokine production and specificity of this terminally differentiated CD8 T cell subset in chronic virus infection is unclear. PATIENTS, METHODS & RESULTS: In a cohort of 26 HIV-infected children the cytokine production of terminally differentiated CD8 cells was analyzed by intracellular staining and FACS analysis and was compared to children with chronic hepatitis B infection and to healthy children. The specificity of CD8 subsets was analyzed by staining with Gag/Pol tetramers in a cohort of 13 patients. We show that an increased production of interferon-γ in terminally and early/intermediate differentiated CD8 cell subsets after stimulation is specific for HIV-infection. The expanded population of terminally differentiated CD8+CD28-CD27- T cells does include HIV Gag/Pol specific T cells in adults but not in children.

CONCLUSION

The expansion of terminally differentiated CD8 cells might be important for immunomodulation but in children it does not appear to play a role in HIV Gag and Pol specific immunity.

Operative risks of domino liver transplantation for the familial amyloid polyneuropathy liver donor and recipient: a double analysis

Although domino liver transplantation (LT) is an established procedure, data about the operative risks are limited. This study aimed at evaluating the operative risks of domino LT. Two retrospective analyses were conducted (comparison of familial amyloid polyneuropathy [FAP] liver donors [61 patients] vs. FAP nondonors [39 patients] and FAP liver recipients [61 patients] vs. deceased donor liver recipients [61 patients]). First analysis showed a 60-day mortality of 6.6% for FAP donors and 7.7% for FAP nondonors (p = 1.0). No patient developed primary graft nonfunction. Acute rejection was higher in FAP nondonors compared to FAP donors (38.5% vs. 13.1%). Both groups had similar vascular and biliary complication rates. ICU stay was similar, whereas total hospitalization was longer for FAP nondonors. Both groups had similar 1- and 5-year patient and graft survival rates (83.4% vs. 87.2%, and 79.8% vs. 71.8%, p = 0.7) and (83.3% vs. 87.2%, and 79.1% vs.71.8%, p = 0.7). The second analysis showed a 1.6% mortality for FAP liver recipients vs. 3.2% of the control group (p = 1). Both groups had similar morbidity and technical complication rates (18.0% vs. 13.1%, p = 0.45) and (0.18 vs. 0.15, p = 0.65). The domino procedure does not add any risk to FAP donor or recipient. It increases the organ pool allowing transplantation of marginal recipients who otherwise are denied deceased donor liver transplantation.

Short- and long-term donor morbidity in right lobe living donor liver transplantation: 91 consecutive cases in a European Center

The lack of use of a common grading system in reporting morbidity impedes estimation of the true risk to a right lobe living donor (RLLD). We report outcomes in 91 consecutive RLLD's using the validated 5-tier Clavien grading and a quality of life (QOL) questionnaire. The median follow-up was 79 months. The donors were predominantly female (66%), 22 (24%) received autologous blood transfusions. Fifty-three complications occurred in 43 donors (47% morbidity), 19 (37%) were ≥ Grade III, biliary fistula (14%) was the most common. There was no donor mortality. Two intraoperative complications could not be graded and two disfiguring complications in female donors were graded as minor. Two subgroups (first 46 vs. later 45 donors) were compared to study the presence if any, of a learning curve. The later 45 donors had lesser autologous transfusions, lesser rehospitalization and no reoperation and a reduction in the proportion of ≥ Grade III (major) complications (24% vs. 50%; p = 0.06). In the long term, donors expressed an overall sense of well being, but some sequelae of surgery do restrain their current lifestyle. Our results warn against lackadaisical vigilance once RLLD hepatectomy becomes routine.

Impact of bevacizumab on functional recovery and histology of the liver after resection of colorectal metastases

BACKGROUND

The impact of bevacizumab on functional recovery and histology of the liver was evaluated in patients undergoing hepatic resection for colorectal liver metastases (CLM) following bevacizumab treatment.

METHODS

Consecutive patients who had resection of CLM between July 2005 and July 2009 following preoperative chemotherapy were identified retrospectively from a prospectively collected database. Patients who had received bevacizumab before the last chemotherapy line were excluded. Postoperative liver function and histology were compared between patients with and without bevacizumab treatment. Recorded parameters included serum prothrombin time, total bilirubin concentration, and levels of aspartate and alanine aminotransferase and γ-glutamyltransferase.

RESULTS

Of 208 patients identified, 67 had received last-line bevacizumab, 44 were excluded and 97 had not received bevacizumab. Most patients in the bevacizumab group (66 per cent) received a single line of chemotherapy. Bevacizumab was most often combined with 5-flurouracil/leucovorin and irinotecan (68 per cent). The median number of bevacizumab cycles was 8·6 (range 1-34). Bevacizumab administration was stopped a median of 8 (range 3-19) weeks before surgery. There were no deaths. Postoperative morbidity occurred in 43 and 36 per cent of patients in the bevacizumab and no-bevacizumab groups respectively (P = 0·353). The mean(s.d.) degree of tumour necrosis was significantly higher in the bevacizumab group (55(27) versus 32(29) per cent; P = 0·001). Complete pathological response rates were comparable (3 versus 8 per cent; P = 0·307). Postoperative changes in functional parameters and objective signs of hepatic toxicity were similar in both groups.

CONCLUSION

Preoperative administration of bevacizumab does not seem to affect functional recovery of the liver after resection of CLM. Tumour necrosis is increased following bevacizumab treatment.

Comparison of simultaneous or delayed liver surgery for limited synchronous colorectal metastases

BACKGROUND

The optimal surgical strategy for patients with synchronous colorectal liver metastases (CLMs) is still unclear. The aim of this study was to compare simultaneous colorectal and hepatic resection with a delayed strategy in patients who had a limited hepatectomy (fewer than three segments).

METHODS

All patients with synchronous CLMs who underwent limited hepatectomy between 1990 and 2006 were included retrospectively. Short-term outcome, overall and progression-free survival were compared in patients having simultaneous colorectal and hepatic resection and those treated by delayed hepatectomy.

RESULTS

Of 228 patients undergoing hepatectomy for synchronous CLMs, 55 (24.1 per cent) had a simultaneous colorectal resection and 173 (75.9 per cent) had delayed hepatectomy. The mortality rate following hepatectomy was similar in the two groups (0 versus 0.6 per cent respectively; P = 0.557), but cumulative morbidity was significantly lower in the simultaneous group (11 per cent versus 25.4 per cent in the delayed group; P = 0.015). Three-year overall and progression-free survival rates were 74 and 8 per cent respectively in the simultaneous group, compared with 70.3 and 26.1 per cent in the delayed group (overall survival: P = 0.871; progression-free survival: P = 0.005). Significantly more recurrences were observed in the simultaneous group at 3 years (85 versus 63.6 per cent; P = 0.002); a simultaneous strategy was an independent predictor of recurrence.

CONCLUSION

Combining colorectal resection with a limited hepatectomy is safe in patients with synchronous CLMs and associated with less cumulative morbidity than a delayed procedure. However, the combined strategy has a negative impact on progression-free survival.

Toward optimized front-line therapeutic strategies in patients with metastatic colorectal cancer--an expert review from the International Congress on Anti-Cancer Treatment (ICACT) 2009

Metastatic colorectal cancer is a particularly frequent and severe cancer. Patients die mainly from metastatic disease; however, the survival of these patients has dramatically improved with the progress in chemotherapeutic regimens as new routes of administration and introduction of more potent cytotoxic agents administered in sequential 5-FU-folinic acid-irinotecan/5-FU-folinic acid-oxaliplatine strategies. Biologic therapies have been also developed targeting two different pathways, angiogenesis and the epidermal growth factor receptor. Their combination with chemotherapy leads to improved progression-free survival and overall survival in some cases as the addition of cetuximab in wild-type K-Ras tumors. The objectives of this expert conference were to review the different options, the available prognostic or predictive factors to optimally guide the treatment.

Impact of portal vein embolization on long-term survival of patients with primarily unresectable colorectal liver metastases

BACKGROUND

: Portal vein embolization (PVE) increases the resectability of initially unresectable colorectal liver metastases (CLM). This study evaluated long-term survival in patients with CLM who underwent hepatectomy following PVE.

METHODS

: In a retrospective analysis patients treated by PVE before major hepatectomy were compared with those who did not have PVE, and with those who had PVE without resection.

RESULTS

: Of 364 patients who underwent hepatectomy, 67 had PVE beforehand and 297 did not. Those who had PVE more often had more than three liver metastases (68 versus 40.9 per cent; P < 0.001) that were more frequently bilobar (78 versus 55.2 per cent; P < 0.001), and a higher proportion underwent extended hepatectomy (63 versus 18.1 per cent; P < 0.001). Postoperative morbidity rates were 55 and 41.1 per cent respectively (P = 0.035), and overall 3-year survival rates were 44 and 61.0 per cent (P = 0.001). Thirty-two other patients who were treated by PVE but did not undergo resection all died within 3 years.

CONCLUSION

: PVE increased the resectability rate of initially unresectable CLM. Among patients who had PVE, long-term survival was better in those who had resection than in those who did not. PVE is of importance in the multimodal treatment of advanced CLM.

Liver resection of colorectal metastases in elderly patients

Background

This study evaluated the outcome of liver surgery for colorectal metastases (CLM) in patients over 70 years old in a large international multicentre cohort.

Methods

Among 7764 patients who had resection of CLM, 999 (12·9 per cent) were aged 70–75 years, 468 (6·0 per cent) were aged 75–80 years and 157 (2·0 per cent) were at least 80 years old. Elderly patients were compared with the younger population.

Results

Multinodular and bilateral metastases were less common in elderly than in younger patients (P &lt; 0·001). Preoperative chemotherapy was used less frequently and more limited surgery was performed (P &lt; 0·001). Sixty-day postoperative mortality and morbidity rates were 3·8 and 32·3 per cent respectively, compared with 1·6 and 28·7 per cent in younger patients (both P &lt; 0·001). Three-year overall survival was 57·1 per cent in elderly and 60·2 per cent in younger patients (P &lt; 0·001), and was similar among patients aged 70–75, 75–80 or at least 80 years (57·8, 55·3 and 54·1 per cent respectively; P = 0·160). Independent predictors of survival were more than three metastases, bilateral metastases, concomitant extrahepatic disease and no postoperative chemotherapy.

Conclusion

Liver resection for CLM in elderly patients can achieve a reasonable 3-year survival rate, with an acceptable morbidity rate. There should be no upper age limit but risk factors may help predict potential benefit.

Progression of alphafetoprotein before liver transplantation for hepatocellular carcinoma in cirrhotic patients: a critical factor

Liver transplantation (LT) for cirrhotic/Hepatocellular carcinoma (HCC) is associated with reduced survival in patients with poor histological features. Preoperative levels of alphafetoprotein (AFP) could predict negative biological features. AFP progression could be more relevant than static AFP levels in predicting LT outcomes. A total of 252 cirrhotic/HCC patients transplanted between 1985 and 2005 were reviewed. One hundred fifty-three patients were analyzed, 99 excluded (for nonsecreting tumors and/or salvage transplantation). Using receiver operating characteristics analysis for recurrence after LT, 'progression' of AFP was defined by >15 microg/L per month before LT. A total of 127 (83%) were transplanted under and 26 (16%) over this threshold. After 45 months of follow-up (median), 5-year overall survival (OS) and recurrence free-survival (RFS) were 72% and 69%, respectively. Five-year survival in the progression group was lower than the nonprogression group (OS 54% vs. 77%; RFS 47% vs. 74%). Multivariate analysis showed progression of AFP>15 microg/L per month and preoperative nodules>3 were associated with decreased OS. Progression group and age>60 years were associated with decreased RFS. Male gender, progression of AFP and size of tumor>30 mm were associated with satellite nodules and/or vascular invasion. In conclusion, increasing AFP>15 microg/L/month while waiting for LT is the most relevant preoperative prognostic factor for low OS/DFS. AFP progression could be a pathological preoperative marker of tumor aggressiveness.

Liver transplantation for alcoholic liver disease in Europe: a study from the ELTR (European Liver Transplant Registry)

Alcohol-related liver disease (ALD) is one of the most common indications for liver transplantation (LT). Long-term outcome after LT for ALD versus other etiologies is still under debate. The aim of this study was to compare outcome after LT of patients with ALD, viral (VIR), and cryptogenic cirrhosis. Donor, graft and recipient ELTR variables were analysed in transplants for alcoholic and nonalcoholic cirrhosis (1988-2005) and were correlated with patient survival. Causes of death and/or graft failure were compared between groups. Nine thousand eight hundred eighty ALD, 10,943 VIR, 1478 ALD+VIR and 2410 cryptogenic (CRYP) liver transplants were evaluated. One, 3, 5 and 10 years graft survival rates after LT in ALD patients were 84%, 78%, 73%, 58%, significantly higher than in VIR and CRYP (p=0.04, p=0.05). By multivariate analysis, ALD+VIR (RR 1.14) and viral alone (RR 1.06) were significant risk factors for mortality. De novo tumors, cardiovascular and social causes were causes of death/graft failure in higher percentage in ALD groups versus other etiologies. LT for ALD cirrhosis has a favorable outcome, however, hepatitis C virus co-infection seems to eliminate this advantage. Screening for de novo tumors and prevention of cardiovascular complications are essential to provide better long-term results.

Liver transplantation for alcoholic liver disease in Europe: a study from the ELTR (European Liver Transplant Registry)

Alcohol-related liver disease (ALD) is one of the most common indications for liver transplantation (LT). Long-term outcome after LT for ALD versus other etiologies is still under debate. The aim of this study was to compare outcome after LT of patients with ALD, viral (VIR), and cryptogenic cirrhosis. Donor, graft and recipient ELTR variables were analysed in transplants for alcoholic and nonalcoholic cirrhosis (1988-2005) and were correlated with patient survival. Causes of death and/or graft failure were compared between groups. Nine thousand eight hundred eighty ALD, 10,943 VIR, 1478 ALD+VIR and 2410 cryptogenic (CRYP) liver transplants were evaluated. One, 3, 5 and 10 years graft survival rates after LT in ALD patients were 84%, 78%, 73%, 58%, significantly higher than in VIR and CRYP (p=0.04, p=0.05). By multivariate analysis, ALD+VIR (RR 1.14) and viral alone (RR 1.06) were significant risk factors for mortality. De novo tumors, cardiovascular and social causes were causes of death/graft failure in higher percentage in ALD groups versus other etiologies. LT for ALD cirrhosis has a favorable outcome, however, hepatitis C virus co-infection seems to eliminate this advantage. Screening for de novo tumors and prevention of cardiovascular complications are essential to provide better long-term results.

Liver transplantation for alcoholic liver disease in Europe: a study from the ELTR (European Liver Transplant Registry)

Alcohol-related liver disease (ALD) is one of the most common indications for liver transplantation (LT). Long-term outcome after LT for ALD versus other etiologies is still under debate. The aim of this study was to compare outcome after LT of patients with ALD, viral (VIR), and cryptogenic cirrhosis. Donor, graft and recipient ELTR variables were analysed in transplants for alcoholic and nonalcoholic cirrhosis (1988-2005) and were correlated with patient survival. Causes of death and/or graft failure were compared between groups. Nine thousand eight hundred eighty ALD, 10,943 VIR, 1478 ALD+VIR and 2410 cryptogenic (CRYP) liver transplants were evaluated. One, 3, 5 and 10 years graft survival rates after LT in ALD patients were 84%, 78%, 73%, 58%, significantly higher than in VIR and CRYP (p=0.04, p=0.05). By multivariate analysis, ALD+VIR (RR 1.14) and viral alone (RR 1.06) were significant risk factors for mortality. De novo tumors, cardiovascular and social causes were causes of death/graft failure in higher percentage in ALD groups versus other etiologies. LT for ALD cirrhosis has a favorable outcome, however, hepatitis C virus co-infection seems to eliminate this advantage. Screening for de novo tumors and prevention of cardiovascular complications are essential to provide better long-term results.

Liver transplantation for alcoholic liver disease in Europe: a study from the ELTR (European Liver Transplant Registry)

Alcohol-related liver disease (ALD) is one of the most common indications for liver transplantation (LT). Long-term outcome after LT for ALD versus other etiologies is still under debate. The aim of this study was to compare outcome after LT of patients with ALD, viral (VIR), and cryptogenic cirrhosis. Donor, graft and recipient ELTR variables were analysed in transplants for alcoholic and nonalcoholic cirrhosis (1988-2005) and were correlated with patient survival. Causes of death and/or graft failure were compared between groups. Nine thousand eight hundred eighty ALD, 10,943 VIR, 1478 ALD+VIR and 2410 cryptogenic (CRYP) liver transplants were evaluated. One, 3, 5 and 10 years graft survival rates after LT in ALD patients were 84%, 78%, 73%, 58%, significantly higher than in VIR and CRYP (p=0.04, p=0.05). By multivariate analysis, ALD+VIR (RR 1.14) and viral alone (RR 1.06) were significant risk factors for mortality. De novo tumors, cardiovascular and social causes were causes of death/graft failure in higher percentage in ALD groups versus other etiologies. LT for ALD cirrhosis has a favorable outcome, however, hepatitis C virus co-infection seems to eliminate this advantage. Screening for de novo tumors and prevention of cardiovascular complications are essential to provide better long-term results.

Long-term outcome in patients with adrenal metastases following resection of colorectal liver metastases

BACKGROUND

The prognostic significance of adrenal metastases (AMs) in patients with colorectal liver metastases (CLMs) remains unknown. The aim of this study was to determine the influence of AMs on long-term outcome and the role of adrenalectomy in patients with CLMs.

METHODS

All patients resected for CLMs who developed AMs at a single institution between 1992 and 2006 were included in the study. Their long-term outcome was compared with that of all other patients resected for CLMs but without AMs.

RESULTS

Hepatectomy was performed in 796 patients, of whom 14 (1.8 per cent) developed AMs, a median of 28 months after initial diagnosis of CLMs; the remaining 782 patients (98.2 per cent) had no AMs. All 14 patients had chemotherapy, and ten went on to adrenalectomy. Median survival after diagnosis of CLMs was 50 months in patients with AMs versus 68 months in those without (P = 0.020). After diagnosis of AMs, median survival was 23 months, whether or not adrenalectomy was performed.

CONCLUSION

The development of AMs after liver resection for colorectal cancer deposits carries a poor prognosis, and adrenalectomy is probably not warranted.

The chronic liver disease in patients with short bowel syndrome: etiology and treatment

Short bowel syndrome is a life threatening disease with a high mortality and morbidity. Since home parenteral nutrition (PN) has been established, there is an increasing number of patients surviving the acute loss of bowel function. But on the long-time these patients suffer from different complications of PN, with loss of central venous access, recurrent sepsis and finally the syndrome of progressive cholestatic liver disease. Both loss of central venous access and especially the progressive cholestatic liver disease are the limiting factor for the long-term survival of patients suffering from intestinal failure. Interestingly, the pathophysiologic mechanisms of PN induced intrahepatic cholestasis have not been dissolved yet and seem to be of multifactorial genesis. Cholestasis has shown to be associated with prematurity, recurrent sepsis, enteral and PN, especially with lipid emulsions. Enteral feeding and a well-controlled regime of PN lower the incidence of end-stage liver disease and, therefore, has to be optimized in the therapy of these patients.

Liver regenerative nodular hyperplasia consecutive to preoperative chemotherapy: Impact on outcome of liver surgery for colorectal metastases

4097

Background: Regenerative nodular hyperplasia (RNH) represents the worst evolutive stage of vascular lesions induced by prolonged chemotherapy on the liver. Its incidence and impact on the outcome of resection for colorectal liver metastases (CLM) are however unknown. We evaluated the effect of RNH on postoperative morbidity and assessed its evolution in time at repeat hepatectomy. Methods: All patients that underwent hepatectomy for CLM between January 1990 and November 2006 after 1 line of chemotherapy of more than 6 cycles were included. Detailed histopathologic analysis of the nontumoral liver was performed at first and repeat hepatectomies according to a standard format. Results: Of 146 included patients, 24 (16%) received 5- fluorouracil (5-FU) and leucovorin (LV) alone, 92 (63%) had 5-FU, LV and oxaliplatin, 18 (12%) had 5-FU, LV and irinotecan, and 12 (8%) were treated by 5-FU, LV, oxaliplatin and irinotecan. Overall, RNH occurred in 22 of 146 patients (15%). Patients treated by oxaliplatin more often had RNH compared to oxaliplatin-naïve patients (22% vs 4%) (P=0.003). The presence of RNH was associated with increased postoperative hepatic morbidity (23% vs 11%) (P=0.05). None of the RNH patients died within 60 days postoperatively. A preoperative gamma-glutamyltransferase level >80 U/L and a total bilirubin level >15 μmol/L were independent predictive factors of RNH at first hepatectomy. Two of 22 patients with RNH underwent repeat hepatectomy. RNH disappeared at second hepatectomy in both patients following prolonged treatment with irinotecan. Conclusions: Patients with CLM that receive prolonged courses of preoperative oxaliplatin have an increased risk of RNH and associated postoperative hepatic morbidity. Upfront treatment with short courses of highly effective regimens may therefore be most appropriate. In addition, the continuation of oxaliplatin should be discouraged in case of RNH to avoid its negative effects on further surgery.

No significant financial relationships to disclose.

Meta-analysis of gender effect for first-line chronomodulated 5-fluorouracil-leucovorin-oxaliplatin (ChronoFLO) compared with FOLFOX or constant infusion (conventional delivery, CONV) against metastatic colorectal cancer (MCC) in three international controlled phase III randomized trials (RT)

4112

Background: Gender predicted for the most effective schedule in a RT of ChronoFLO vs CONV against MCC: overall survival (OS) was significantly increased in men on chronoFLO vs FOLFOX, whereas the reverse was found in women (Giacchetti, JCO 2006). Methods: To assess the relevance of gender for patient (pt) outcome, meta-analysis was performed on individual pt data (IPD) from 3 RT in 845 MCC pts treated with chronoFLO vs CONV (346 F, 499 M at 36 centers in 1990–2002)(Lévi, JNCI 1994; Lancet 1997). Data bases were merged and updated at 9 y after inclusion of the 1st pt. Main prognostic factors were comparable in each RT according to gender and treatment arm (median age: 61y; PS=0, 46% pts; liver M, 85% pts; liver involvement >25%, 41% pts; lung M, 37% pts; CEA>10, 56% pts). Results: No significant difference was found according to delivery schedule or gender in the whole population for Response Rate (RR), Progression-Free Survival (PFS) and OS. However, men on chronoFLO had highest RR, longest PFS and OS. PFS and OS were highest in women on CONV ( Table ). The rate of complete macroscopic resections of liver metastases (R0+R1) was 12.5% in men on chronoFLO vs 7.8–8.5% in men on CONV or in women on either schedule. A complete histologic response of liver metastases was documented in 2.1% of the men on chronoFLO vs 0–1.1% in the other groups. The relative risk of an earlier death in men vs women was 0.76 [95% CL, 0.91 to 0.94] on chronoFLO and 1.24 [0.99 to 1.56] on CONV. Conclusions: This IPD meta-analysis of 3 RT in MCC with a minimum follow up of 5 years confirms that men benefit from chronoFLO as compared to CONV delivery, with regard to long term outcome and medico-surgical strategy. ChronoFLO should be preferred to conventional oxaliplatin-5-FU-LV schedules in men with MCC. Support: ARTBC Internationale, P. Brousse Hospital, Villejuif, France.

[Table: see text]

No significant financial relationships to disclose.

Postoperative liver function recovery after hepatic resection for colorectal metastases previously treated with bevacizumab

4093

Background: The influence of bevacizumab on postoperative morbidity in patients with colorectal liver metastases (CLM) submitted to hepatectomy has been evaluated. However, in spite of a potential inhibition of liver regeneration, its impact on postoperative liver function recovery remains unknown. Methods: From July 2005 to December 2007, we evaluated 37 patients treated with bevacizumab prior to hepatectomy. Postoperative evolution of liver function variables was compared with that of 70 bevacizumab-naïve patients. Recorded parameters included prothrombin time, serum aspartate and alanine aminotransferase levels, and serum gamma-glutamyltransferase and total bilirubin levels. Results: Most patients of the bevacizumab group received 1 line of chemotherapy (62% vs 54% in the control group) (P=0.43). Bevacizumab was combined to 5-fluorouracil (5-FU), leucovorin (LV) and irinotecan or 5-FU, LV and oxaliplatin in the last preoperative line, in 57% and 30% of cases, respectively. Patients received a mean total number of 10.4+5.7 and 11.1+6.2 cycles of preoperative chemotherapy in the bevacizumab and control group (P=0.56). The median number of administered bevacizumab cycles was 6 (range: 3–25). Bevacizumab administration was stopped at a median of 7.9 weeks before surgery (range: 3.6–18.0). Major hepatectomies were performed in 41% and 36% of bevacizumab and control patients, respectively (P=0.62). Baseline liver function tests as well as postoperative liver function recovery were similar between patients treated with or without bevacizumab (Table). Postoperative morbidity occurred in 35% of bevacizumab patients and in 43% of control patients (P=0.44). Conclusions: Preoperative bevacizumab treatment has no impact on short-term liver function recovery after hepatic resection for CLM and has no deleterious effect on the incidence of postoperative morbidity.

[Table: see text]

No significant financial relationships to disclose.

[Role and technical aspects of surgery for liver metastases from urological malignancies]

The liver is the third localisation of metastatic urological tumours after the bone and the lungs. Most frequently, it occurs as a multimetastatic disease for which surgery is not feasible. Nevertheless, when the metastasis is unique and when resection can be complete, it can be proposed if the localisation and the global prognosis permit. Recent therapeutic progress, including new improved drugs, progress in surgical procedures and the multisciplinary approach, lead to propose tumorectomy or hepatectomy for a few selected patients with hepatic metastasis from urological tumours.

Linear to radial polarization conversion in the THz domain using a passive system

This paper addresses a passive system capable of converting a linearly polarized THz beam into a radially polarized one. This is obtained by extending to THz frequencies and waveguides an already proven concept based on mode selection in optical fibers. The approach is validated at 0.1 THz owing to the realization of a prototype involving a circular waveguide and two tapers that exhibits a radially polarized beam at its output. By a simple homothetic size reduction, the system can be easily adapted to higher THz frequencies.

Seasonal effects on the nasolabial skin condition

In the present work, nasolabial skin condition and the influence of seasonal changes during autumn and winter were studied in 16 healthy female volunteers. Apart from visual scoring of erythema and skin scaliness, transepidermal water loss (TEWL), skin hydration, apparent skin pH, skin colour and skin desquamation were biophysically measured. The study results showed that nasolabial TEWL was significantly higher during wintertime than in autumn. Also skin colour measurements and squamometry scorings revealed higher values, indicating a more reddish and scaly nasolabial skin during winter compared to autumn. Results from tape stripping and skin surface lipid analysis by high-performance thin-layer chromatography demonstrated significant differences for triglycerides and cholesterol esters, indicating a functionally inferior hydrolipidic layer during the winter season.