Fish hook pattern of capillaries is seen in: (A) Capillary hemangioma, (B) Cavernous hemangioma, (C) Angiosarcoma, (D) Hemangiopericytoma
Answer is D. Ans. (d) Hemangiopericytoma(Ref: Sternberg's Diagnostic Surgical Pathology, 5th Edition, table 511)HemangiopericytomaTumor derived from pericytes Q - perivascular cells that wrap around blood capillariesThese tumors most commonly arise from pelvic retroperitoneum Q or the limbs Q (particularly thighs).Capillaries are arranged in 'fish-hook pattern;' Q seen best with silver stains Q