Young adult with an iridic mass extending into the ciliary body

Melanoma markers were negative. Smooth muscle markers were positive. This case was determined to be an epithelioid leiomyoma. I didn't do electron microscopy to look for mitochondia, but it may well be what Ursula Schlotzer-Schredhardt et al. have called a mitochondria-rich epithelioid leiomyoma (Arch Ophthalmol, Vol 120, January 2002).