(A) This photomicrograph shows a neurothekeoma of the pretibial region. Neurothekeomas are variably myxoid, moderately cellular neoplasms lacking either Schwann or perineurial cell differentiation. They are distinguished from nerve sheath myxomas by virtue of their increased cellularity and reduced myxoid background. H&E, x100. (B) This is a higher-power photomicrograph demonstrating a cluster of tumor cells, which are variably spindle shaped or epithelioid in appearance. H&E, x400.
