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Tumor-Like Lesions and Endometriosis, Pathology of the Peritoneum

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  • First Online:
Encyclopedia of Pathology

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

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Endosalpingiosis

Definition

Ectopic fallopian tube epithelium.

Clinical Features

  • Incidence

    13%. Frequently occurs in association with ovarian serous borderline tumors and low-grade serous carcinoma.

  • Age

    Wide age range, but more commonly found in women of reproductive age.

  • Sex

    Female.

  • Site

    Peritoneum, pelvic soft tissue, and lymph nodes.

  • Treatment

    Usually an incidental finding at surgery for other indications.

  • Outcome

    This is a benign lesion.

Macroscopy

Not typically grossly appreciable. When presenting as florid cystic endosalpingiosis, it rarely forms a mass lesion.

Microscopy

Simple glands lined by a single layer of serous-type epithelium containing peg cells and ciliated cells. Intraglandular stromal projections forming simple papillae may be present (Fig. 1).

Fig. 1
figure 1

Simple glands with tubal-type epithelium. Note the presence of ciliated cells and peg cells

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Authors and Affiliations

  1. Division of Anatomic Pathology, Department of Laboratory Medicine and Molecular Diagnostics, Sunnybrook Health Sciences Centre, Toronto, ON, Canada

    Bojana Djordjevic

  2. Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON, Canada

    Bojana Djordjevic

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  1. Bojana Djordjevic
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Correspondence to Bojana Djordjevic .

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Editors and Affiliations

  1. NIJMEGEN, The Netherlands

    J.H.J.M. van Krieken

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Djordjevic, B. (2023). Tumor-Like Lesions and Endometriosis, Pathology of the Peritoneum. In: van Krieken, J. (eds) Encyclopedia of Pathology. Encyclopedia of Pathology. Springer, Cham. https://doi.org/10.1007/978-3-319-28845-1_5679-1

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  • DOI: https://doi.org/10.1007/978-3-319-28845-1_5679-1

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