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Mesothelial Tumors, Pathology of the Peritoneum

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  • First Online:
Gynecologic Pathology

Part of the book series: Encyclopedia of Pathology ((EP))

  • 11 Accesses

Adenomatoid Tumor

Definition

Benign tumor of mesothelial origin.

Clinical Features

  • Incidence

    Infrequent. Adenomatoid tumors may disproportionately occur in immunocompromised patients.

  • Age

    Middle-aged patients, 28–68 years.

  • Sex

    Female and male.

  • Site

    In the female, adenomatoid tumors most commonly occur in the myometrium and the fallopian tube wall, but may rarely arise in the ovary, the omentum, the bowel mesentery, and the peritoneum. In the male, adenomatoid tumors may be located in the epididymis and less commonly in the spermatic cord, prostate, and ejaculatory ducts.

  • Treatment

    Usually an incidental finding at surgery for other indications.

  • Outcome

    This is a benign tumor.

Macroscopy

Well circumscribed and usually not exceeding 2 cm in size. Typically located subjacent to serosal surfaces.

Microscopy

Composed of pseudoglandular and pseudovascular spaces lined by flat to cuboidal cells (Fig. 1). The spaces may be small and anastomosing or large and pseudocystic. Occasionally,...

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Davidson, B., Djordjevic, B. (2023). Mesothelial Tumors, Pathology of the Peritoneum. In: Stolnicu, S., Ali-Fehmi, R. (eds) Gynecologic Pathology. Encyclopedia of Pathology. Springer, Cham. https://doi.org/10.1007/978-3-030-97378-0_5674

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  • DOI: https://doi.org/10.1007/978-3-030-97378-0_5674

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