A unique case of multiple osteochondroma: Mandibular symphysis and femur

Abstract

Osteochondroma is a common benign tumor of the axial skeleton rarely seen in the facial bones. When encountered in the facial skeleton, it is commonly found in the mandible, usually in the condyle or coronoid processes. There are only two earlier reported cases of the tumor in the mandibular symphysis. We report an unusual case of osteochondroma of the mandibular symphysis found in conjunction with osteochondroma of the distal femur and, stress the need for long-term follow-up in patients with multiple lesions.

Imaging of Mixed and Radiopaque Jaw Lesions

“…However, involvement of the mandible has only been exceptionally reported in association with HMES. 35,36 Small lesions may be asymptomatic, but larger lesions may cause a decreased mouth opening. Continuity of the cortex and the medullary bone of the lesion and the underlying host bone is a characteristic imaging finding on plain radiographs and CT (►Fig.…”

“…Although malignant degeneration is a rare occurrence in solitary osteochondroma, it is much more frequent in HMES. 36,37 Osteoblastic Metastasis Osteoblastic metastasis rarely occurs in the jawbones and is predominantly seen in prostate carcinoma, although other primary carcinomas (e.g., breast, thyroid, kidney) may also have a mixed or osteoblastic appearance. Approximately 80 to 85% of metastases involve the mandible, most commonly the molar region.…”

Osteochondroma at the angle of mandible: A rare case

“…The growth of tumor is slow and is in coordination with the growth of the skeleton. [ 2 ] The tumor may be sessile or pedunculated and is usually asymptomatic. Solitary OC are exophytic lesions of bone arising from the cortex and covered by periosteum that is continuous with that of the adjacent bone and this accounts for 75% of the OCs.…”

“…Osteochondroma (OC) is also known as osteocartilaginous exostosis. [ 1 2 3 4 ] It arises from the bone cortex as an exophytic lesion with a hyaline cartilaginous cap. It is one of the most common benign tumors of the axial skeleton.…”

“…It is one of the most common benign tumors of the axial skeleton. [ 2 ] It accounts for approximately one-third of benign bony lesions. OC may arise in any bone that develops from endochondral ossification and it is rare in maxillofacial region as most of the craniofacial skeleton develops from intramembranous ossification.…”