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[Follicular dendritic cell sarcoma in a lymph node]

A Iotti1, B Elsner, A Avagnina

  • 1Servicio de Patología, CEMIC, Buenos Aires, Argentina.

Medicina
|August 26, 1998
PubMed
Summary
This summary is machine-generated.

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A rare follicular dendritic cell sarcoma (FDCS) was identified in a 39-year-old man presenting with a neck mass. This unusual tumor requires greater recognition in clinical practice.

Area of Science:

  • Oncology
  • Pathology

Background:

  • Follicular dendritic cell sarcoma (FDCS) is a rare neoplastic proliferation originating from follicular dendritic cells within lymph nodes.
  • Accurate diagnosis is crucial due to its rarity and potential for misdiagnosis with other spindle cell tumors.

Observation:

  • A 39-year-old male presented with a rapidly enlarging, painless left neck mass.
  • Excision revealed a lymph node containing a proliferation of oval to spindle cells with characteristic histological features.
  • Immunohistochemical analysis showed positivity for vimentin, CD68, CD21, CD35, and R4/23, with ultrastructural evidence of long cytoplasmic processes joined by desmosomes.

Findings:

  • Histological examination demonstrated sheets and fascicles of neoplastic cells, occasionally forming a storiform pattern.
  • Tumor cells exhibited large nuclei, dispersed chromatin, and small nucleoli.

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  • Immunohistochemistry and ultrastructural findings were consistent with FDCS.

    • Implications:

    • The patient achieved a favorable outcome with local radiotherapy, remaining disease-free 18 months post-excision.
    • This case highlights the importance of considering FDCS in the differential diagnosis of neck masses.
    • Wider recognition of FDCS is essential for timely diagnosis and appropriate management of this uncommon malignancy.