International Journal of Oral and Maxillofacial Surgery
Case ReportClinical PathologyExtraskeletal chondroma of the masseter muscle: a case report with review of the literature
Section snippets
Case report
A 49-year-old man was admitted with a 6 year history of swelling in the left preauricular region that had increased in the last year. Clinical examination revealed a 5 cm diameter, well-circumscribed nodule, covered by normal skin in the left preauricular region (Fig. 1A); it appeared firm and painless, and floating in superficial planes.
Ultrasound examination revealed a well-circumscribed, 4 cm diameter, nodular mass in the masseter muscle with a non homogeneous hypoechoic structure and
Discussion
The authors report a rare case of a primary benign cartilaginous tumour in the masseter muscle of a 49- year-old male of 6 years’ duration. Extraskeletal chondromas are benign tumours arising in soft tissues unrelated to the bone.
The aetiology of soft tissue chondromas is unknown but it is thought that they arise from residual embryonic tissue or from metaplastic pluripotential mesenchymal cells10, 39. The tumour cells probably arise from uncommitted mesenchymal stem cells either by metaplastic
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A massive soft-tissue chondroma in the parapharyngeal space
2023, Journal of Oral and Maxillofacial Surgery, Medicine, and PathologyExtraskeletal chondroma walling the temporomandibular joint: Report of a rare case and review of the literature
2018, International Journal of Surgery Case ReportsCitation Excerpt :The etiology of extraskeletal chondroma is unknown. It is believed that the tumor originates from residual embryonic tissue or pluripotent mesenchymal stem cells [4,10]. The usual clinical manifestation involves a progressive slow-growing preauricular mass that occasionally causes local tenderness or pain [1].
Diagnostic approach to intramasseteric nodules
2017, Oral Surgery, Oral Medicine, Oral Pathology and Oral RadiologyCitation Excerpt :Falleti et al.12 reported a case of a masseteric chondroma in a 49-year-old man, with a 6-year history of a firm and painless swelling covered by normal skin. Ultrasonography revealed a uniform hypoechoic structure with calcifications.12 He et al. reported a case of an intramasseteric schwannoma in a middle-aged woman with a 3-year history of a painless mass in her right cheek.11
A case of extraskeletal chondroma of the temporomandibular joint capsule
2015, Journal of Oral and Maxillofacial Surgery, Medicine, and PathologyCitation Excerpt :Extraskeletal chondroma (ESC) is a benign tumor that usually occurs adjacent to the periarticular tissues or tendosynovium, without any adhesion to the underlying bone [1]. ESC rarely occurs in the oral and maxillofacial regions [2], and to our knowledge, it has not been reported in the region of the temporomandibular joint (TMJ). We present an extremely rare case of ESC that developed in the TMJ capsule.
Nodular lesion in the buccal mucosa
2015, Journal of the American Dental AssociationHeterotopic ossifying tumors in head and neck and heterotopic ossification and calcification
2012, Journal of Oral and Maxillofacial Surgery, Medicine, and PathologyCitation Excerpt :In the oral cavity, previous reports noted that the tumor appears in the parapharyngeal space [9], cheek [10–13], tongue [14–17], masticatory space [18], soft palate [19] and tonsil [20]. Recently, Falleti et al. [21] reported a total of 35 cases of soft tissue chondroma in the head and neck. The tongue was the most frequent area (21/35), and about 1/3 of the tumors arose in the tongue, similar to those in extraskeletal osteoma of the oral cavity.