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Related Experiment Videos

Cellular schwannoma: a distinct pseudosarcomatous entity.

C D Fletcher, S E Davies, P H McKee

    Histopathology
    |January 1, 1987
    PubMed
    Summary

    Cellular schwannomas are benign nerve tumors typically found in middle-aged adults. These tumors, often arising from nerves, show S-100 protein positivity and have a low recurrence rate.

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    Area of Science:

    • Pathology
    • Oncology
    • Surgical Pathology

    Background:

    • Cellular schwannoma is a recently identified benign tumor.
    • These tumors often arise from peripheral nerves.
    • They typically occur in middle-aged adults.

    Purpose of the Study:

    • To describe the clinicopathological features of cellular schwannoma.
    • To differentiate cellular schwannoma from malignant nerve sheath tumors and other soft tissue neoplasms.
    • To evaluate the behavior and prognosis of cellular schwannoma.

    Main Methods:

    • Retrospective review of 18 cases of cellular schwannoma.
    • Light microscopic examination of tumor morphology.
    • Immunohistochemical analysis for S-100 protein.

    Main Results:

    • Tumors predominantly occurred in the paravertebral mediastinum and retroperitoneum.
    • Macroscopic origin from a nerve was noted in over half the cases.
    • Immunohistochemistry showed S-100 protein positivity in 17 out of 18 cases.
    • Only one case showed local recurrence, with no instances of metastasis.

    Conclusions:

    • Cellular schwannoma is a distinct benign entity with characteristic microscopic features.
    • Distinguishing cellular schwannoma from malignant tumors requires careful evaluation.
    • Cellular schwannoma demonstrates a favorable prognosis with low recurrence and no metastatic potential.

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