[Pituitary carcinoma. Anatomic and clinical features of cases reported in literature].
OBJECTIVE
Pituitary gland tumors that became aggressive, implying adjacent bone structure and the brain as metastases outside of the cranial box, are referred to as pituitary carcinomas.


METHODS
We reviewed 67 cases reported in the literature [44 corticotropic pituitary tumors, 11 PRL tumors, 3 GH tumors, 1 TSH tumor, 3 gonadotropic cell tumors and 5 non-functioning tumors].


RESULTS
The corticotropic tumors occurred in 23 female and 15 males. Signs of hypercorticism were characteristic: generalized melanosis before adrenalectomy (N=1); headache (N=1); altered visual (N=1); diabetes insipidus (N=1); amenorrhea (N=1); Cushing syndrome (N=2); weight loss (N=1); refractory hypokaliemic alkalosis (N=1); diabetes mellitus (N=1); hypertension (N=1). ACTH, beta-lipotrophin, betaendorphin, alphamelano-stimulating hormone, CRH, and beta-gamma MSH were contributive while ultrastructural microscopy provided little information, as did an equimolar Lph/ACTH ratio. The possible association of prolactin tumors with corticotrophin forms has been underlined. The characteristic feature is a time interval from the initial diagnosis of adenoma to that of cancer, which has ranged from 0.3 to 18 years (mean: 6.6 years; median: 5.0 years).


CONCLUSIONS
Corticotropic tumors resistance to high-dose medical treatment are usually aggressive tumors with a risk of recurrence after surgical treatment or even radiotherapy with the risk of metastases. GH tumors appear to predominate although it is known that these cancers can develop in association with corticotrophin cancers or with prolactin cell tumors.
Sidibé
E H
EH
Département des sciences médicales, université Paris-VII, France. sidibeeh@refer.sn
D049913:ACTH-Secreting Pituitary Adenoma / Q000175:diagnosis / Q000378:metabolism / Q000473:pathology; D000230:Adenocarcinoma / Q000175:diagnosis / Q000378:metabolism / Q000473:pathology*; D000328:Adult; D000368:Aged; D005260:Female; D006062:Gonadotropins / Q000378:metabolism; D049912:Growth Hormone-Secreting Pituitary Adenoma / Q000175:diagnosis / Q000378:metabolism; D006801:Humans; D008297:Male; D008875:Middle Aged; D010911:Pituitary Neoplasms / Q000175:diagnosis / Q000378:metabolism / Q000473:pathology*; D015175:Prolactinoma / Q000175:diagnosis / Q000378:metabolism / Q000473:pathology; D013972:Thyrotropin / Q000378:metabolism
D006062:Gonadotropins; D013972:Thyrotropin