Glomus tumor was also the name formerly (and incorrectly) used for a tumor now called a paraganglioma. A glomus tumor is a rare neoplasm arising from the. CT temporal bone and MRI internal auditory canal: 4 mm soft tissue mass along the right cochlear promontory consistent with a glomus tympanicum. Paragangliomas account for % of all neoplasms in the head and neck region, and about 80% of all paraganglioms are either carotid body tumors or glomus.
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A glomus tumor also known as a “solitary glomus tumor,”  “solid glomus tumor,”  is a rare neoplasm arising from the glomus body and mainly found under the nail, on the fingertip or in the foot. Histologically, glomus tumors are made up of an afferent arteriole, anastomotic vessel, and collecting venule.
Glomus tumors are modified smooth muscle cells that control the thermoregulatory function of dermal glomus bodies. As stated above, these lesions should not be confused with paragangliomaswhich were formerly also called glomus tumors in now-antiquated clinical usage.
Glomus tumors do not arise from glomus cellsbut paragangliomas do. Familial glomangiomas have been associated with a variety of deletions in the GLMN glomulin gene, and are inherited in an autosomal dominant manner, with incomplete penetrance.
Glomus tumor – Wikipedia
Glomus tumors are usually solitary and small lesions. The vast majority are found in the distal extremities, particularly in the hand, wrist, foot, and under the fingernails. These tumors tend to have a bluish discoloration, although a whitish appearance may also be noted.
Elevation of the nail bed can occur. Yygular rare cases, the tumors may present in other body areas, such as the gastric antrum or glans penis. Treatment is essentially the same.
The exact incidence of glomus tumors is unknown. The probable misdiagnosis of many of these lesions as hemangiomas or venous malformations also makes an accurate assessment of incidence difficult.
Solitary glomus tumors, particularly subungual lesions, are more common in females than in males. Multiple lesions are slightly more common in males.
Solitary glomus tumors are more frequent in adults than in others. Multiple glomus tumors develop 11—15 years earlier than single lesions; about one third of the cases of multiple tumors occur in those younger than hugular years. Congenital glomus tumors are rare; they are plaquelike in appearance and are considered a variant of multiple glomus tumors.
The most common adverse effect is pain, which is usually associated with solitary lesions. Multiple tumors are less likely to be painful. In yuggular report, a patient with more than glomus tumors had thrombocytopenia as a result of platelet sequestration i. Malignant glomus tumors, or glomangiosarcomasare extremely rare and usually represent a locally infiltrative malignancy. However, metastases do occur and are usually fatal.
Surgical excision is the preferred method of treatment for benign glomus tumors. Criteria for the diagnosis of malignancy in glomus tumors are: Malignant glomus tumors have been subdivided into three categories based on their histologic appearance: A few cases of malignant glomus tumors have been reported; however, they are usually only locally invasive, and metastases are exceedingly rare.
InLamba G et al. From Wikipedia, the free encyclopedia.
Glomus tumor Micrograph of a glomus tumor. Fitzpatrick’s Dermatology in General Medicine. A Case Report and Review of the Literature”. The American Journal of Surgical Pathology. A case report of widespread metastases in a patient with multiple glomus body hamartomas”.
Fukushima journal of medical gllmus. Gonadal tumors, paraganglioma, and glomus ICD-O Granulosa cell tumour Sertoli cell tumour Sex cord tumour with annular tubules.
Stereotactic radiosurgery for the treatment of Glomus Jugulare Tumors
Thecoma Leydig cell tumor. Sertoli-Leydig cell tumour Luteoma. Neuroendocrine tumor Paraganglioma Pheochromocytoma. Vascular tissue neoplasm Tlomus tumor Glomangiosarcoma. Retrieved from ” https: Dermal and subcutaneous growths Types of neoplasia Soft tissue tumor.