Peritoneal Carcinosarcoma and Ovarian Papillary Serous Carcinoma Are the Same Origin: Analysis of TP53 Mutation and Microsatellite Suggests a Monoclonal Origin
우창곡, 서대식, 김주영, 성창옥, Choi Jene, 김규래,
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우창곡 ( Woo Chang-Gok )
University of Ulsan College of Medicine Asan Medical Center Department of Pathology
서대식 ( Suh Dae-Shik )
University of Ulsan College of Medicine Department of Obstetrics and Gynecology
김주영 ( Kim Joo-Young )
University of Ulsan College of Medicine Asan Medical Center Department of Pathology
성창옥 ( Sung Chang-Ohk )
University of Ulsan College of Medicine Asan Medical Center Department of Pathology
( Choi Jene )
University of Ulsan College of Medicine Asan Medical Center Department of Pathology
김규래 ( Kim Kyu-Rae )
University of Ulsan College of Medicine Asan Medical Center Department of Pathology
KMID : 0357920140480060449
Abstract
Carcinosarcoma is an aggressive malignant neoplasm of the female genital tract that is biphasic and composed of carcinomatous and sarcomatous components. It was previously considered as a subtype of uterine sarcoma but is currently regarded as a type of metaplastic carcinoma.1 Here, we report a case in which a carcinosarcoma forming a discrete mass in the peritoneal cavity was diagnosed concurrently with smaller bilateral ovarian masses showing unequivocal histologic features of high-grade serous carcinoma. Although there seems to be a close relationship between the two tumors in this case, firm evidence for the histopathologic determination of the primary site is lacking because primary carcinosarcomas have been described in many extragenital organs, including the peritoneum, in the literature. We demonstrated two tumors with different histologic findings at distant tumor locations but with a common origin in their pathogenetic mechanism, as suggested by their similar immunohistochemical overexpression of p53 protein and identical pattern TP53 mutation and microsatellites (the reference panel, the Bethesda markers) by molecular analysis.
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