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Journal of Case Reports
A Rare Peritoneal Adenomatoid Tumor
Stefania Erra, Nano Ennio
Department of Surgical Pathology, Santo Spirito Hospital, Casale Monferrato, Italy.
Corresponding Author:
Dr Stefania Erra 
Email: stefania.erra@virgilio.it
Received: 23-JUL-2021 Accepted: 13-AUG-2021 Published Online: 30-SEP-2021
DOI: http://dx.doi.org/10.17659/01.2021.0054
Background: Adenomatoid tumors (AT) are benign tumor arising from mesothelial lining of organs. Genital tract is the most common site of origin for these tumors. These types of tumors are slow-growing, usually asymptomatic (based on the site of growth) and in consequence they can be spotted many years after their initial growth. Case Report: A 59-year-old man presented with a non-painful nodule arising from the anterior omental cavity. The nodule was excised and morphologically evaluated as adenomatoid tumor of the peritoneal cavity. IHC followed to sustain the diagnosis. Conclusion: Microscopic morphology and tumoral immune-phenotype help to distinguish ATs from well-differentiated adenocarcinomas.

Keywords : Adenomatoid tumor, Mesothelium, Immmunohistochemistry, Peritoneum.
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