Sporadic Retroperitoneal Hemangioblastoma: Report of a Case and Review of the Literature

Figure 4

Immunohistochemical studies demonstrated diffuse S100 expression in the neoplastic cells ((a), S100 immunostain, 200x) and cytoplasmic expression of inhibin in the stromal cells ((b), inhibin immunostain, 400x). No expression of chromogranin was identified ((c), chromogranin immunostain, 400x). CD34 highlighted the prominent vascular network ((d), CD34 immunostain, 100x).

(a)

(b)

(c)

(d)