PMC3740121_01
Pathology of ovarian tumor. Panel A shows the macroscopic appearance of the ovarian tumor (10x7x5 cm in diameter). Pathological examination demonstrates cystic immature teratoma containing neural tubes, neurons, choroid plexus, cartilage, fat tissue, and hair follicles (B: x20, C: x4, D: x10, Hematoxylin and Eosin staining). Panel D shows focal infiltrates of lymphocytes in the neural tissue. Panel E (x10), immunostaing with CD3 (a marker of T cells), and panel F (x10), immunostaining with CD20 (B cells) demonstrates accumulation of both T cells and B cells.
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F1
Pathological examination of the tumor revealed a grade 2 immature teratoma containing both immature and mature components with extensive infiltrates of B- and T lymphocytes (Fig. 1).