Solitary fibrous tumor of the adrenal gland
Prévot, S.; Penna, C.; Imbert, J.C.; Wendum, D.; de Saint-Maur, P.P.
Modern Pathology An Official Journal of the United States and Canadian Academy of Pathology Inc 9(12): 1170-1174
1996
ISSN/ISBN: 0893-3952 PMID: 8972477 Document Number: 463412
Solitary fibrous tumors are rare neoplasms, most commonly involving the pleura, recently described in various other locations. We report a solitary fibrous tumor of the right adrenal gland in a 42-year-old woman, discovered incidentally during abdominopelvic ultrasonographic examination. Pathologic and immunohistologic features of the tumor were identical to those of other solitary fibrous tumors. Three-quarters of this unencapsulated infiltrating tumoral mass presented foci of hemorrhage and were made of small, round, epithelioid-like cells that expressed the CD34 antigen more weakly than do the typical spindle cells usually observed in solitary fibrous tumors. Despite hemorrhage and poor limitation, the tumor behaved in a innocuous manner; the mass remaining unchanged for more than 5 years before the patient agreed to surgical intervention, which was recommended because of a sudden enlargement of the mass.