Glomus Tumor of the Upper Lip.

Abstract

A case of glomus tumor of the upper lip in a 57-year-old Japanese male is described. The patient had a tender swelling of the upper lip, and this was completely excised. The lesion was found to be encapsulated by fibrous connective tissue and composed of blood capillaries surrounded by sheets of epitheloid cells. Immunohistochemical examination revealed that the neoplastic cells were positive for S-100 protein, vimentin, desmin and actin. Although the endothelial cells of blood capillaries in the tumor tissue were positive for factor VIII, no reaction product was found in the tumor cells. These results suggested that the tumor cells had characteristics of smooth muscle cells.

Perivascular myoid tumors of the oral region: a clinicopathologic re‐evaluation of 35 cases

“…Among 25 cases of ALM, maxillary bone (Fig. 2a–c) and submandibular gland (17) were exceptional sites of involvement. They were classified into 18 venous, six solid and one cavernous (Fig.…”

“…Two GT were completely encapsulated (Fig. 6a) and subtyped into solid cellular variant (17, 18). Tumor cells arranged in a pattern of HPC (Fig.…”

Glomus Tumor in Floor of Mouth: A Case Report

“…According to Tokiba et al 9 until 1990, only 16 cases of oral or facial glomus tumors have been published in the literature, of which 4 were gingival lesions, 4 were in palate, 2 lingual lesions, 2 jugal mucosal lesions, 1 tumor in preauricular region and 2 were in lips. Six cases involving intranasal subsites were reported by Potter et al 10 One lesion in parotid region, 11 one in tonsillar fossa, 12 one in jugal mucosa, 7 and four cases in the lips [13][14][15]5 have been reported.…”

Glomus Tumor of the Oral Cavity: Report of a Rare Case and Literature Review

“…However, GT is extremely rare in the mouth. To the best of our knowledge, there are only 23 well-documented cases of GT involving the mouth reported in the Englishlanguage literature (2,3,(8)(9)(10)(11)(12)(13)(14)(15)(16)(17)(18)(19)(20)(21)(22)(23)(24)(25)(26)(27). The aim of this report is to describe the histopathological and immunohistochemical features of a rare case of GT involving the upper lip, and to review the pertinent literature.…”