AÇBİD- 13th International Congress- 2019 , Antalya, Turkey, 24 - 28 April 2019, pp.262
Objective: Osteochondroma or osteocartilaginous exostosis, is a cartilage-capped exophytic
lesion that arises from the cortex of a bone. Although osteochondroma is considered as the
most common tumor of skeletal bones, it is relatively rare in the jaw. The osteochondroma
of the mandible occurs at the condyle or the tip of the coronoid process whereas called
Jacob’s Disease when mandibular coronoid process is involved. In this report, we present an
osteochondroma case extending from the mandibular condyle to the cranial base.
Case: A 55-year male patient was referred to Department of Oral and Maxillofacial Surgery
of Bezmialem Vakif University Dentistry Faculty with complaints of mouth opening limitation
and facial asymmetry. The distance of maximum mouth opening was 9 mm in length. A
computed tomography scan showed the right condylar processes hyperplasia. The condyle
and pathological segment resections were performed with interpositional gap arthroplasty and
abdominal fat graft was preferred. After the operation, the patient’s maximal incisal opening
was 45 mm. Pathological examination revealed irregularly arranged fibrous, cartilaginous and
bony elements. Based on histological features, a final diagnosis of osteochondroma was made.
No complaints were reported by the patient during 1-year follow-up.
Conclusion: Osteochondroma is rarely seen on the mandibular condyle. Clinical symptoms
may be similar in many temporomandibular joint diseases such as ankylosis, Jacob’s Disease
etc. Therefore the differential diagnosis should be well done. Gap arthroplasty is commonly
recommended as the best treatment option in such cases.