A case report of myxoma within the right submandibular muscle and a literature review

Intramuscular myxoma is a rare benign soft-tissue tumor, with an estimated incidence of approximately 0.10-0.13 per 100,000 individuals. Lesions arising in the submandibular muscles are exceptionally uncommon and may be misdiagnosed as sublingual gland cysts. Due to the nonspecific clinical manifestations and potential for misdiagnosis on imaging, histopathological evaluation remains the definitive diagnostic method. Complete surgical excision is the treatment of choice and is generally associated with a favorable prognosis.