Angiomyolipoma classification

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1] Associate Editor-In-Chief: Cafer Zorkun, M.D., Ph.D. [2], Faizan Sheraz, M.D. [3],Rekha, M.D.

Overview

Angiomyolipoma may be classified according to radiologic appearance into 7 subtypes: classic angiomyolipoma, triphasic angiomyolipoma, fat poor angiomyolipoma, hyperattenuating angiomyolipoma, isoattenuating angiomyolipoma, angiomyolipoma with epithelial cysts, and angiomyolipoma in lymphangioleiomyomatosis.^[1]

Classification

Angiomyolipoma may be classified according to World Health Organization (WHO) into as follows:^[1]^[2]^[3]^[4]


Radiologic Classification	Features

Classic angiomyolipoma	Abundant fat Fat tissue in renal sinus
Triphasic angiomyolipoma	Mature adipose tissue Dysmorphic blood vessels
Fat poor angiomyolipoma	Minimal fat tissue Abundant smooth muscle component
Hyperattenuating angiomyolipoma	Abundant smooth muscle component Hyperattenuating tissue
Isoattenuating angiomyolipoma	Scattered fat tissue Smooth muscle component
Angiomyolipoma with epithelial cysts	Epithelium lined cysts Fat poor
Angiomyolipoma in lymphangioleiomyomatosis	Atypical smooth muscle component Cystic changes

References

↑ ^1.0 ^1.1 Jinzaki M, Silverman SG, Akita H, Nagashima Y, Mikami S, Oya M (2014). "Renal angiomyolipoma: a radiological classification and update on recent developments in diagnosis and management". Abdom Imaging. 39 (3): 588–604. doi:10.1007/s00261-014-0083-3. PMC 4040184. PMID 24504542.
↑ Lane BR, Aydin H, Danforth TL, Zhou M, Remer EM, Novick AC; et al. (2008). "Clinical correlates of renal angiomyolipoma subtypes in 209 patients: classic, fat poor, tuberous sclerosis associated and epithelioid". J Urol. 180 (3): 836–43. doi:10.1016/j.juro.2008.05.041. PMID 18635231.
↑ Park, Byung Kwan (2017). "Renal Angiomyolipoma: Radiologic Classification and Imaging Features According to the Amount of Fat". American Journal of Roentgenology. 209 (4): 826–835. doi:10.2214/AJR.17.17973. ISSN 0361-803X.
↑ Silverman, Stuart G.; Mortele, Koenraad J.; Tuncali, Kemal; Jinzaki, Masahiro; Cibas, Edmund S. (2007). "Hyperattenuating Renal Masses: Etiologies, Pathogenesis, and Imaging Evaluation". RadioGraphics. 27 (4): 1131–1143. doi:10.1148/rg.274065147. ISSN 0271-5333.

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[pmid24504542-1] 1.0 ^1.1 Jinzaki M, Silverman SG, Akita H, Nagashima Y, Mikami S, Oya M (2014). "Renal angiomyolipoma: a radiological classification and update on recent developments in diagnosis and management". Abdom Imaging. 39 (3): 588–604. doi:10.1007/s00261-014-0083-3. PMC 4040184. PMID 24504542.

[pmid18635231-2] Lane BR, Aydin H, Danforth TL, Zhou M, Remer EM, Novick AC; et al. (2008). "Clinical correlates of renal angiomyolipoma subtypes in 209 patients: classic, fat poor, tuberous sclerosis associated and epithelioid". J Urol. 180 (3): 836–43. doi:10.1016/j.juro.2008.05.041. PMID 18635231.

[Park2017-3] Park, Byung Kwan (2017). "Renal Angiomyolipoma: Radiologic Classification and Imaging Features According to the Amount of Fat". American Journal of Roentgenology. 209 (4): 826–835. doi:10.2214/AJR.17.17973. ISSN 0361-803X.

[SilvermanMortele2007-4] Silverman, Stuart G.; Mortele, Koenraad J.; Tuncali, Kemal; Jinzaki, Masahiro; Cibas, Edmund S. (2007). "Hyperattenuating Renal Masses: Etiologies, Pathogenesis, and Imaging Evaluation". RadioGraphics. 27 (4): 1131–1143. doi:10.1148/rg.274065147. ISSN 0271-5333.

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Angiomyolipoma classification

Overview

Classification

References

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