Localized form of multiple glomus tumors: report of the first case showing partial involution.

We recently examined a boy with relatively large multiple glomus tumors on the left scapular region. Histologic examination revealed a typical non-capsulated glomangioma in the middle and deep dermis; by electron microscopic examination, the tumor cells were seen to exhibit a characteristic smooth muscle cell structure. Thermographic examination revealed the higher temperature of the tumor. Within a year, the tumor showed a partial involution. We think this is the first report of multiple glomus tumor showing a partial involution.