PubMed · 9047910
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M Uchida, T Kojima. 1996. [Glomus tumor].. https://pubmed.ncbi.nlm.nih.gov/9047910/
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Glomus tumors are rare vascular tumors that are found most commonly in the hand. Although the tumors are benign, they can cause intense focal pain. Patients often go undiagnosed or misdiagnosed for many years because the tumors are small, usually not palpable, and have varying presentations. A combination of magnetic resonance imaging and clinical examination is used to support the diagnosis. Surgical excision normally provides complete pain relief. An awareness of the diagnosis is critical to preventing an unnecessary delay in treatment.
BACKGROUND: We report a rare case of glomus tumor that occurred in the lateral joint of the knee. A 54-year-old man was referred to us with a 3-year history of lateral pain in the left knee and the diagnosis of lateral meniscus injury. Physical examination revealed a small trigger point localized just on the lateral joint space. Magnetic resonance imaging (MRI) showed a very small round mass in the subcutaneous tissue at the level of the lateral joint space. TREATMENT: Excisional biopsy was performed, and the histology was characteristic of a glomus tumor. The patient was asymptomatic immediately after the operation. At the 3-year follow-up after the operation, no recurrence was seen.
Glomus tumors of the head and neck are rare tumors of adulthood which arise from paraganglia or glomus cells within the carotid glomus, vagus nerve, middle ear or jugular foramen. The diagnosis of these mostly benign lesions is predominantly done with CT and MRI. DSA can provide important additional information. Besides surgical resection, one therapy option is radiological intervention with tumor embolisation. Because of the typical radiological imaging and the "salt and pepper appearance" in MRI, glomus tumors can be differentiated from other lesions in the head and neck. This review gives a survey of the classification, diagnosis and therapy of paragangliomas with images to demonstrate characteristic features.