Renal angiomyoadenomatous tumour

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Renal angiomyoadenomatous tumour, abbreviated RAT, is an uncommon kidney tumour not recognized by the WHO classification of renal neoplasia or the Vancouver modification.

General

Clincal:

  • Typical age (years) 50s.[2]
  • Age range 40-93 years.[2]

Gross

Features:[2]

  • Tan-brown renal mass +/-cystic component.

Microscopic

Features:[2][3]

  • Leiomyomatous capsule of variable thickness - key feature.
  • Tubular structures with:

DDx:[2][4]

IHC

Features:[3]

  • CK7 +ve.
  • CK20 +ve.
  • CAM5.2 +ve.
  • AE1/AE3 +ve.

See also

References

  1. Petersson, F.; Grossmann, P.; Hora, M.; Sperga, M.; Montiel, DP.; Martinek, P.; Gutierrez, ME.; Bulimbasic, S. et al. (Jul 2013). "Renal cell carcinoma with areas mimicking renal angiomyoadenomatous tumor/clear cell papillary renal cell carcinoma.". Hum Pathol 44 (7): 1412-20. doi:10.1016/j.humpath.2012.11.019. PMID 23434146.
  2. 2.0 2.1 2.2 2.3 2.4 Singh, C.; Kendi, AT.; Manivel, JC.; Pambuccian, SE. (Dec 2012). "Renal angiomyoadenomatous tumor.". Ann Diagn Pathol 16 (6): 470-6. doi:10.1016/j.anndiagpath.2012.01.006. PMID 22534244.
  3. 3.0 3.1 Michal, M.; Hes, O.; Nemcova, J.; Sima, R.; Kuroda, N.; Bulimbasic, S.; Franco, M.; Sakaida, N. et al. (Jan 2009). "Renal angiomyoadenomatous tumor: morphologic, immunohistochemical, and molecular genetic study of a distinct entity.". Virchows Arch 454 (1): 89-99. doi:10.1007/s00428-008-0697-3. PMID 19020896.
  4. Petersson, F.; Branzovsky, J.; Martinek, P.; Korabecna, M.; Kruslin, B.; Hora, M.; Peckova, K.; Bauleth, K. et al. (Jul 2014). "The leiomyomatous stroma in renal cell carcinomas is polyclonal and not part of the neoplastic process.". Virchows Arch 465 (1): 89-96. doi:10.1007/s00428-014-1591-9. PMID 24838683.