Malignant deciduoid mesothelioma: a diagnostic challenge.
Malignant deciduoid mesothelioma, a rare phenotype of epithelioid mesothelioma, arises more commonly from the peritoneum of young women, but it is also reported in the pleura of elderly people. We report a case of malignant deciduoid mesothelioma that occurred in a 41-year-old woman after cesarean section and was initially misdiagnosed as pseudotumoral deciduosis. Microscopically, the tumor was entirely composed of deciduoid areas, and only scattered tumor cells were positive for calretinin and keratin 5/6. The patient died 14 months after the first operation. This observation confirms the poor prognosis of this entity and the importance of the differential diagnosis of pseudotumoral deciduosis.
Mourra
Najat
N
Department of Pathology, Hôpital St-Antoine, Paris, France. najat.mourra@sat.ap-hop-paris.fr
de Chaisemartin
Cecile
C
Goubin-Versini
Isabelle
I
Parc
Rolland
R
Flejou
Jean-Francois
JF
D000328:Adult; D002828:Choristoma / Q000175:diagnosis*; D003937:Diagnosis, Differential; D004717:Endometrium / Q000473:pathology*; D005260:Female; D006801:Humans; D008654:Mesothelioma / Q000175:diagnosis*; D009852:Omentum / Q000473:pathology*; D010049:Ovarian Diseases / Q000175:diagnosis*; D010051:Ovarian Neoplasms / Q000175:diagnosis*; D010532:Peritoneal Diseases / Q000175:diagnosis; D010534:Peritoneal Neoplasms / Q000175:diagnosis*; D014591:Uterine Diseases / Q000175:diagnosis*; D014594:Uterine Neoplasms / Q000175:diagnosis*