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Lymph node interdigitating reticulum cell sarcoma.

W C Chan, G Zaatari

    American Journal of Clinical Pathology
    |June 1, 1986
    PubMed
    Summary
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    This study describes a rare malignant tumor in a 67-year-old man, likely originating from lymph node interdigitating reticulum cells. The aggressive cancer spread to multiple organs and was resistant to chemotherapy.

    Area of Science:

    • Oncology
    • Immunohistochemistry
    • Electron Microscopy

    Background:

    • Malignant tumors can arise from various cell types within lymph nodes.
    • Interdigitating reticulum cells are specialized antigen-presenting cells found in T-cell areas of lymphoid tissue.

    Observation:

    • A 67-year-old male presented with a widespread malignant tumor affecting the lymph nodes, spleen, liver, and lungs.
    • Clinical symptoms included prolonged fever and night sweats.
    • Microscopic examination revealed large, pleomorphic cells with surrounding microabscesses.

    Findings:

    • Immunohistochemical analysis demonstrated intracytoplasmic S100 protein, surface T6, Leu-3a (T4), and HLA-DR antigens.
    • The malignant cells exhibited ATPase activity.
    • Ultrastructural examination showed numerous interdigitating cell processes, but no Birbeck granules were observed.

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    Implications:

    • The combined features suggest the tumor originated from lymph node interdigitating reticulum cells.
    • The tumor's resistance to chemotherapy highlights the need for further research into treatment strategies for this rare malignancy.
    • This case contributes to understanding the pathology and behavior of interdigitating reticulum cell tumors.