Renal leiomyoma

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Renal leiomyoma, also leiomyoma of the kidney, is a very rare benign kidney tumour.

General

  • Rare - estimated to represent 0.3% of treated renal tumours.[1]

Microscopic

Features:

  • Fasicular architecture.
  • Spindle cells without significant atypia.

DDx:

IHC

Features:[2]

  • HMB-45 -ve.
  • Desmin +ve.
  • ER and PR +ve (6 of 9 cases:[2]).

See also

References

  1. Khetrapal, S.; Bhargava, A.; Jetley, S.; Rana, S.; Jairajpuri, Z. (Oct 2014). "Renal leiomyoma: an uncommon differential diagnosis of renal masses with a clinical relevance.". J Clin Diagn Res 8 (10): FD08-9. doi:10.7860/JCDR/2014/9434.4993. PMID 25478354.
  2. 2.0 2.1 Patil, PA.; McKenney, JK.; Trpkov, K.; Hes, O.; Montironi, R.; Scarpelli, M.; Nesi, G.; Aron, M. et al. (Dec 2014). "Renal Leiomyoma: A Contemporary Multi-institution Study of an Infrequent and Frequently Misclassified Neoplasm.". Am J Surg Pathol. doi:10.1097/PAS.0000000000000354. PMID 25517956.