Abstract
A 2 month-old child complained the hydrocele of the spermatic cord and visited our hospital. Aspiration cytology revealed various kinds of erythroblasts and myeloblasts, and megakaryocytes. Namely, orthochromatic polychromatic and basophilic erythroblasts, and metamyelocytes and myelocytes etc. were observed in the aspirated fluid. In addition, macrophages with phagocytosed foreign bodies, red blood cells and erythroblasts were also found. Examination of the blood was normal and atypical blood cells were not observed. There was neither hepatomegaly nor splenomegaly. In other words, physical examination was negative except for hydrocele. Now he is well 3 and half years after. Therefore, this case was diagnosed as extramedullary hematopoiesis in the hydrocele of the spermatic cord and we discussed this rare case.
