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Extranodal interdigitating dendritic cell sarcoma presenting in the pleura: a case report
Hye-Suk Han1, Ok-Jun Lee, Sung-nam Lim
1Department of Internal Medicine, Chungbuk National University College of Medicine, Cheongju, Korea.
Journal of Korean Medical Science
|February 3, 2011
Summary
Interdigitating dendritic cell sarcoma (IDCS) is a rare cancer. This case highlights extranodal IDCS in the pleura, emphasizing the need for specific diagnostic markers.
Area of Science:
- Oncology
- Immunology
- Pathology
Background:
- Interdigitating dendritic cell sarcoma (IDCS) is an exceedingly rare neoplasm originating from immune system antigen-presenting cells.
- Typically affecting lymph nodes, IDCS can rarely manifest at extranodal sites.
Observation:
- A case of extranodal IDCS presenting in the pleura of a 32-year-old male is reported.
- The patient exhibited progressive chest pain, diffuse pleural thickening, and pleural effusion on imaging.
- Diagnosis was confirmed via pleural biopsy, showing tumor cells positive for S100 and CD45, and negative for other specific markers.
Findings:
- Morphological and immunohistochemical analyses were crucial for diagnosing this rare extranodal IDCS.
- Tumor cells displayed a specific immunophenotype (S100+, CD45+, CD1a-, CD21-, CD35-, B cell-, T cell-).
Implications:
- This case underscores the importance of considering extranodal IDCS in the differential diagnosis of undifferentiated pleural neoplasms.
- Appropriate immunohistochemical staining is essential for accurate diagnosis and management of rare cancers like IDCS.
