Background & Aims
Liver transplantation has become the standard of care treatment for hepatocellular carcinoma (HCC) that falls within size and numeric criteria in cirrhotic patients. Cirrhotomimetic (CMM) hepatocellular carcinoma is an uncommon growth pattern that infiltrates cirrhotic parenchyma, can become extensive in size, and can evade detection via radiologic studies. Liver transplant outcomes for this type of HCC is not well reported but generally considered to be poor. We wished to better describe this variant of HCC in explanted livers, derive a classification system for this tumor type, and assess the outcomes of liver transplantation for this tumor variant.
Methods
Upon retrospective analysis of all patients transplanted at a single center for HCC in 1996–2009 (358 patients) a series of 26 patients exhibiting CMM growth pattern were identified. We developed a classification system for this tumor growth pattern variant and determined patient and tumor-specific outcomes.
Results
We derived a classification schema of CMM HCC based upon tumor extent and cellular histopathology with clear cell pathology being associated with favorable outcome. We note a 100% 3-year and 58.3% 5-year recurrence free survival after transplant in those with tumor confined to one lobe who have clear cell pathology versus 16.2% 3- and 5-year recurrence free survival in those who do not meet these criteria.
Conclusion
Cirrhotomimetic HCC features are noted in 7% of patients transplanted for HCC in our center with favorable outcomes inpatients with clear cell histology and growth involving less than 50% of the liver.
Background
Alloantibody can lead to antibody mediated rejection and graft loss in renal transplantation, necessitating an assessment of crossmatch compatibility. Within the past decade, more specific solid phase assays of alloantibody have been widely adopted, allowing virtual crossmatching based on unacceptable antigens, the threshold of which is determined by individual centers.
Methods
We examined the clinical outcomes of 482 patients transplanted 2007–2009 in a single center, focusing on 30 patients with weakly reactive donor specific antibody (DSA) determined prospectively prior to renal transplant.
Results
Compared with patients without DSA, patients with weakly reactive DSA do not have increased rates of antibody mediated rejection, cellular rejection, or graft loss despite conventional immunosuppression utilization.
Conclusions
Using the screening methodology and immunosuppression regimen we have applied to the patients with weak DSA allows them to be transplanted with equivalent outcomes as those without DSA, despite the overall higher-risk characteristics of the patients in the weak DSA group.
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