title: Pituitary carcinoma with mandibular metastasis: a case report.
abstract: Pituitary carcinomas are rare primary adenohypophyseal tumors with cerebrospinal or extracranial metastasis. The present case, the first report of the disease in Korea, involved a 36-yr-old woman who presented with a 3-week history of headache. Brain magnetic resonance imaging revealed a 2.5-cm sellar and suprasellar mass showing heterogeneous enhancement with suspicious invasion of both cavernous sinuses. The patient underwent gross-total resection. The tumor cells were composed of polygonal cells singly or in variable-sized nests. The nuclei were large and round with prominent nucleoli. The cytoplasms was acidophilic and granular. Marked pleomorphism and frequent mitoses (3 per 10 HPFs) were found. By immunohistochemistry, tumor cells were strongly positive for prolactin, but negative for ACTH and GH. Additional immunostainings for cytokeratin, vimentin, and glial fibrillary acidic protein (GFAP) were negative. After the surgery, the patient received radiotherapy because of the atypical histologic features. The prolactin level fell from 123.17 ng/mL to 5.17 ng/mL after surgery. Nine months after the initial diagnosis, the patient died from mandibular metastasis associated with the pituitary carcinoma.
authors.affiliation: Department of Pathology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.
authors.forename: Gawon
authors.initials: G
authors.lastname: Choi
authors.forename: Hye Jeong
authors.initials: HJ
authors.lastname: Choi
authors.forename: Young Min
authors.initials: YM
authors.lastname: Kim
authors.forename: Seong Hoon
authors.initials: SH
authors.lastname: Choi
authors.forename: Yeoung Cheol
authors.initials: YC
authors.lastname: Cho
authors.forename: Young
authors.initials: Y
authors.lastname: Kim
authors.forename: Jae Hee
authors.initials: JH
authors.lastname: Suh
authors.forename: Hee Jeong
authors.initials: HJ
authors.lastname: Cha
mesh_terms: D000328:Adult; D005260:Female; D006801:Humans; D007150:Immunohistochemistry; D008279:Magnetic Resonance Imaging; D008339:Mandibular Neoplasms / Q000175:diagnosis / Q000378:metabolism / Q000473:pathology / Q000556:secondary*; D010911:Pituitary Neoplasms / Q000175:diagnosis / Q000378:metabolism / Q000473:pathology*; D011388:Prolactin / Q000378:metabolism; D015175:Prolactinoma / Q000175:diagnosis / Q000378:metabolism / Q000473:pathology / Q000556:secondary
chemical_list: D011388:Prolactin