Solitary submandibular soft tissue osteochondroma: A rare ca
Soft tissue osteochondroma are hard tissue tumors in extraskeletal locations encased in a fibrous connective tissue capsule with no hard tissue connection. Extraskeletal osteochondromas are extremely rare in the maxillofacial region. Surgical excision is the standard of care.

Soft tissue osteochondromas are rare benign tumors containing bone and cartilage that form in mesenchymal tissues with no connection to adjacent bone, cartilage, or periosteum. They mimic endochondral ossification and are usually encased in a fibrous tissue capsule. The occurrence of the tumor is extremely rare in the maxillofacial region.

A case of soft tissue osteochondroma in the submandibular region of a 47-year-old man with a medical history of muscular dystrophy and schizophrenia is presented here. The tumor had been gradually growing for 11?years before the patient's presentation to the clinics.

Radiographic and clinical examination revealed a radiopaque mass in soft tissue that extended from the left anteroinferior border of the mandible and with no connection to the mandibular periosteum. Treatment involved surgical excision. A diagnosis of soft tissue osteochondroma was established by histopathological examination.

Extraskeletal osteochondroma should be considered in the differential diagnosis of hard tissue lesions with no apparent connection to the underlying bone in the maxillofacial region. Although considered rare, clinical awareness about this tumor aids the practitioner in identifying, diagnosing, and properly managing this tumor.

International Journal of Surgery Case Reports
Source: https://doi.org/10.1016/j.ijscr.2021.106074
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