RESUMO
<p><b>OBJECTIVE</b>To study the clinicopathologic features, immunophenotype and prognosis of primary cutaneous anaplastic large cell lymphoma (C-ALCL).</p><p><b>METHODS</b>Eight cases of C-ALCL were enrolled into the study. The clinicopathologic features, immunohistochemical findings and results of in-situ hybridization for EBER 1/2 were analyzed.</p><p><b>RESULTS</b>Three of the 8 patients were males and 5 were females. The median age was 49.5 years. C-ALCL often presented with solitary skin nodule, without systemic symptoms. Histologically, the lymphoma cells infiltrated the dermis and subcutis in a sheet-like pattern. They were of large size and showed conspicuous nuclear atypia. Immunohistochemical study showed that more than 75% of the lymphoma cells were positive for CD30. All cases expressed one to three T cell markers (CD3, CD5 or CD45RO) and cytotoxic granule-associated antigens (TIA-1, granzyme B or perforin). The staining for leukocyte common antigen was positive in all cases, while the expression of CD5, CD8, ALK-1 and epithelial membrane antigen was noted in 5, 1, 1 and 3 cases, respectively. The staining for CD15, CD20, CK and HMB45 was negative. In-situ hybridization for EBER 1/2 was also negative in all the cases studied. Follow-up information was available in 6 patients. Five of them were still alive and 1 died of unclear cause.</p><p><b>CONCLUSIONS</b>C-ALCL has distinctive clinicopathologic and immunophenotypic features. It is not Epstein-Barr virus-related and often carries a favorable prognosis.</p>
Assuntos
Adulto , Idoso , Criança , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Adulto Jovem , Antígenos CD5 , Metabolismo , Terapia Combinada , Seguimentos , Imunofenotipagem , Hibridização In Situ , Antígeno Ki-1 , Metabolismo , Antígenos Comuns de Leucócito , Metabolismo , Linfoma Anaplásico Cutâneo Primário de Células Grandes , Alergia e Imunologia , Metabolismo , Patologia , Terapêutica , Prognóstico , RNA Viral , Metabolismo , Neoplasias Cutâneas , Alergia e Imunologia , Metabolismo , Patologia , TerapêuticaRESUMO
<p><b>OBJECTIVE</b>To study the expression of anaplastic lymphoma kinase (ALK) and survivin proteins in anaplastic large cell lymphoma (ALCL) and there clinical significance.</p><p><b>METHODS</b>The morphologic characteristics were studied by routine light microscopy. Immunohistochemical staining for ALK and survivin proteins was performed using LSAB method.</p><p><b>RESULTS</b>ALK protein was positive in 51 cases (63%) and negative in 30 cases (37%) of the 81 cases of ALCL studied. The prognosis of patients with ALK protein expression was better than those without ALK expression (P < 0.05). As for survivin protein, there were various degrees of expression in all the 77 ALCL cases studied. High level of survivin protein expression was observed in 33 cases (42.9%), while low level of expression was seen in 44 cases (57.1%). The expression of survivin protein did not correlate with that of ALK protein (P > 0.05). The survival rate was significantly lower in patients with high survivin protein expression (P < 0.05). In cases with ALK protein expression, the prognosis was less favorable if there was also high co-expression of survivin protein (P < 0.05). In ALK protein negative cases, prognosis did not significantly correlate with the expression of survivin protein (P > 0.05). In addition, multivariate analysis confirmed the prognosis value of ALK protein expression, survivin protein expression and constitutional symptoms.</p><p><b>CONCLUSION</b>Survivin protein expression can serve as an independent prognostic predictor of unfavorable clinical outcome in patients with ALCL, especially when ALK protein is positive.</p>