A case of multiple glomus tumors has been studied with angiography, thermography, plethysmography, and light and electron microscopy. No vascular abnormalities were found. Light microscopic studies revealed typical histopathology of glomus tumors of the multiple type. Electron microscopic studies confirmed that the glomus cells have the features of smooth muscle cells.
Goodman TF, Abele DC. Multiple Glomus TumorsA Clinical and Electron Microscopic Study. Arch Dermatol. 1971;103(1):11-23. doi:10.1001/archderm.1971.04000130013002