%A Mani, Sandeep %A Lakshmanan, Archana %A Subramanyan, Annapurneswari %D 2022 %T Pituicytoma- Case Report Of A Rare Sellar/ Suprasellar Mass %K %X Background: Pituicytoma is a rare primary tumor of the sellar and suprasellar region, arising from the pituicytes which are specialized glial cells in the neurohyphophysis and infundibulum.   Objective: Radiological features being non- specific, histopathological examination and immunohistochemistry will help us in arriving at the correct diagnosis. Material and methods: We report a case of pituicytoma in a 48 year old woman arising in the sellar/suprasellar region. Results: Histopathological examination of the lesion showed elongate bipolar spindle cells arranged in fascicular and storiform pattern. The neoplastic cells were diffusely positive for TTF-1, S-100, vimentin, variably positive for GFAP, negative for synaptophysin and Ki-67 index was less than one percentage. Conclusion: Pituicytomas are rare tumors of the sellar and suprasellar region and its diagnosis is typically based on histopathological examination with a varied immunohistochemical profiles but with consistent TTF-1 positivity. %U https://www.diagnosticpathology.eu/content/index.php/dpath/article/view/284 %J Diagnostic Pathology %0 Journal Article %R 10.17629/www.diagnosticpathology.eu-2022-7:284 %V 7 %N 1 %@ 2364-4893 %8 2022-03-31