Diffuse tenosynovial giant-cell tumour

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Diffuse tenosynovial giant-cell tumour is relatively common mostly benign chondro-osseous tumour of the large joints.

Diffuse tenosynovial giant-cell tumour
Diagnosis in short
LM nodules composed of cells with abundant cytoplasm & pale nuclei, multinucleated giant cells, hemosiderin-laden macrophages, foam cells
LM DDx giant cell lesions, others
Gross pigmented
Site large joints - esp. knee or hip; occ. extra-articular
Prognosis usually benign

It is also known as tenosynovial giant-cell tumour, diffuse type. Previously, it was known as pigmented villonodular synovitis, abbreviated PVNS.[1]

General

Gross

  • Typically knee or hip.[6]
  • May be extra-articular.[4]

Microscopic

Features:[7]

  • Subsynovial nodules composed of cells with:
    • Abundant cytoplasm.
    • Pale nuclei.
  • Multinucleated giant cells.
  • Hemosiderin-laden macrophages.
  • Foam cells.

DDx - general for the site:[8]

Images

  • PVNS - low mag. (WC)

  • PVNS - high mag. (WC)

www:

Molecular

  • Clonal - overexpresses CSF1.[9]

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RIGHT FEMORAL HEAD AND JOINT CAPSULE, EXCISION:
- DEGENERATIVE JOINT DISEASE.
- DIFFUSE TENOSYNOVIAL GIANT-CELL TUMOUR (PIGMENTED VILLONODULAR SYNOVITIS).

Micro

The soft tissue sections show nodules with abundant hemosiderin-laden macrophages and multinucleated giant cells. Nuclear atypia is not identified. Mitotic activity is not apparent.

See also

References

  1. ↑ Kumar, Vinay; Abbas, Abul K.; Fausto, Nelson; Aster, Jon (2009). Robbins and Cotran pathologic basis of disease (8th ed.). Elsevier Saunders. pp. 1247. ISBN 978-1416031215.
  2. ↑ Kondo, R.; Akiba, J.; Hiraoka, K.; Hisaoka, M.; Hashimoto, H.; Kage, M.; Yano, H. (Aug 2012). "Malignant diffuse-type tenosynovial giant cell tumor of the buttock.". Pathol Int 62 (8): 559-64. doi:10.1111/j.1440-1827.2012.02838.x. PMID 22827766.
  3. ↑ Li, CF.; Wang, JW.; Huang, WW.; Hou, CC.; Chou, SC.; Eng, HL.; Lin, CN.; Yu, SC. et al. (Apr 2008). "Malignant diffuse-type tenosynovial giant cell tumors: a series of 7 cases comparing with 24 benign lesions with review of the literature.". Am J Surg Pathol 32 (4): 587-99. doi:10.1097/PAS.0b013e318158428f. PMID 18301053.
  4. ↑ 4.0 4.1 Somerhausen, NS.; Fletcher, CD. (Apr 2000). "Diffuse-type giant cell tumor: clinicopathologic and immunohistochemical analysis of 50 cases with extraarticular disease.". Am J Surg Pathol 24 (4): 479-92. PMID 10757395.
  5. ↑ URL: http://emedicine.medscape.com/article/1253223-overview. Accessed on: 6 January 2011.
  6. ↑ Frassica, FJ.; Bhimani, MA.; McCarthy, EF.; Wenz, J. (Oct 1999). "Pigmented villonodular synovitis of the hip and knee.". Am Fam Physician 60 (5): 1404-10; discussion 1415. PMID 10524485.
  7. ↑ URL: http://www.wheelessonline.com/ortho/pigmented_villonodular_synovitis.
  8. ↑ Krenn, V.; Morawietz, L.; König, A.; Haeupl, T. (Nov 2006). "[Differential diagnosis of chronic synovitis].". Pathologe 27 (6): 402-8. doi:10.1007/s00292-006-0866-6. PMID 17031677.
  9. ↑ Lucas, DR. (Aug 2012). "Tenosynovial giant cell tumor: case report and review.". Arch Pathol Lab Med 136 (8): 901-6. doi:10.5858/arpa.2012-0165-CR. PMID 22849738.
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