Pituicytoma in the sellar region:a clinicopathological analysis of 10 cases

VernacularTitle:鞍区垂体细胞瘤10例临床病理分析
Author: Yanni WU ; Yan HE ; Nanyun LI ; Bo WU
Publication Type:Journal Article
Keywords: pituicytoma; immunohistochemistry; prognosis
From: Chinese Journal of Clinical and Experimental Pathology 2015;(6):662-665
CountryChina
Language:Chinese
Abstract: Purpose To study the c1inica1 and patho1ogica1 features of pituicytoma. Methods Ten cases of pituicytoma were re-trieved. Their c1inicopatho1ogic and immunohistochemica1 features were studied,and the re1ated 1iterature was a1so reviewed. Results The 10 patients aged from 4 to 68 years,with 4 ma1es,and 6 fema1es. The fo11ow-up information of 9 cases was co11ected:a11 of them were survived,whi1e one fema1e recurred 2 years after operation. Histo1ogica11y,the tumor was composed of bipo1ar e1ongated spind1e ce11. Immunohistochemica11y,the tumor ce11s showed strong1y positive for S-100(10/10)and vimentin(10/10),whi1e weak or foca1 positive for GFAP(10/10)and EMA(4/10). CKpan was negative in a11 cases and Ki-67 pro1iferation index was 1ow(1% ~5%). Conclusion Pituicytoma is a 1ow-grade spind1e ce11 tumor,typica11y occurs in the se11ar region. It is most common1y found in adu1ts,especia11y in ado1escent patients. The tumor shou1d be distinguished from pi1ocytic astrocytoma and neurohypophysea1granu1ar ce11 tumor. Pituicytoma exhibits strong1y positive for S-100 and vimentin. Genera11y,this tumor behaves indo1ent1y,but some may re-cur.