Myositis Ossificans of the Masseter Muscle

A Rare Case of Soft Tissue Osteoma of Hand

Osteomas are benign, slow-growing, differentiated tumours, which are primarily located in the region of maxillofacial skeleton. Osteoma involving the soft tissues with no bony attachments is a very rare event. A 68-year-old woman with comorbidities (diabetes mellitus type II, primary hypertension, pacemaker in situ) presented with a painless solid mass in the thenar region of her right palm, which appeared almost 1 and half years ago and showed a progressive enlargement in the last few months. Under regional anaesthesia, an excisional biopsy was performed and the histopathological evaluation of the lesion confirmed the diagnosis of soft tissue osteoma. The postoperative follow-up period was uneventful without any complication.

Non-traumatic myositis ossificans of the Right masseter muscle: a case report and review of the literature

Myositis ossificans (MO) is a rare disease in which ossification develops in the muscle or soft tissue. MO traumatica is recognized by ossification of the soft tissues after acute or repetitive trauma, burns, or surgical procedures. It usually involves the extremity muscles. In the head and neck region, the masseter is most commonly involved in MO traumatica. Surgical resection of the ossified tissue has been the most commonly used treatment for this disorder, with a high postoperative recurrence rate. We report a case of non-traumatic MO of the Masseter muscle with different size round calcifications and to review the literature reported data about MO traumatica involving the masseter muscle.

Myositis ossificans of the masticatory muscle monitored over three generations: A case report and review of the literature

Myositis ossificans (MO) is a rare disease and its major feature is the formation of heterotropic bone involving muscle or any other type of soft tissue (tendons, ligament, fascia and connective tissue). In the present study, a case report of a patient diagnosed with MO is presented. The diagnosis was established by evaluation of the medical history of the patient and the patient's family, as well as clinical data, radiology and post-operative pathology. The patient underwent excision surgery of the calcified lesion. In addition, genomic DNA was examined from blood samples of the patient and the patient's father with their consent. A mutation in the non-coding region was detected but any direct causative effect remains elusive. The present case report provided significant information with regard to the incidence of MO in four members of the same family assessed over three generations. The disease exhibited a unique localization in the maxillofacial region.