Ki-1 (CD 30) Anaplastic large cell lymphoma with extensive eosinophilic infiltration

Hippokratia 1998, 2(4):186-188

I.D. Venizelos, M. Leontsini


Ki-1 positive anaplastic large – cell malignant lymphoma (Ki-1 ALCL) is an uncommon type of non – Hodgkin’ lymphoma. Recently, a morphological subtype of Ki-1 ALCL was described which is characterized by extensive eosinophilic infitration in the absence of necrosis. We describe the clinicopathological features of one case of Ki-1 ALCL, in a 17 year old boy, in which there was extensive infiltration by eosinophils in the absence of necrosis.