Figure 3
From: Struma ovarii with follicular thyroid-type carcinoma and neuroendocrine component: case report
Histological and immunohistochemical profile of thyroid type carcinoma in SO. Microscopical relationship between SO and ovarian teratoma: on the right side mature bone tissue with osteoblasts; on the left, follicular thyroid cancer cells, ×20 (a). Vascular invasion: capillary structures are invaded by cancer cells in the pericapsular area (b, black arrows). Neuroendocrine tumor morphology with cordonal-alveolar pattern (c). Cavernous hemangioma of the stomach arising from submucosa: on the lower part of the section, normal gastric mucosa and muscolaris mucosae, ×20 (d).