Two Case Reports of Angioleiomyoma of the Finger

Abstract

Angioleiomyoma represents a benign stromal tumor, which usually occurs in the subcutaneous 
tissue of the extremities. The angioleiomyoma in the finger is rare. We report 2 rare cases of 
an angioleiomyoma in finger. Case one, was a 72-year-old man with a mass on the radial side 
of distal phalanx of the left third finger. Case two, was a 70-year-old man with a mass on the 
ulnar side of interphalangeal joint of the left thumb. Both cases showed isointense to hypointense mass lesion on both T1 and T2-weighted images and were pathologically diagnosed with 
an angioleiomyoma. Heterogeneously isointense to hypointense on T2-weighted MR image 
showed two components: smooth muscle tissue punctuated with thick-walled vessles and/or 
hyalization on pathological finding. When much hyalization is included, it will not be enhanced 
on gadolinium-enhanced fat suppressed T1-weighted magnetic resonance (MR) image. Both 
T2-weighted and gadolinium-enhanced fat suppressed T1-weighted MR image findings should 
considered to predict tumor composition