Abstract

Purpose: Ossifying fibroma is a rare benign tumor of the mandible and maxilla most commonly seen in females in 4th decade of life. Extra-osseous ossifying fibroma is a rare entity described in the literature. We present this rare case of extra-osseous ossifying fibroma in the sublingual space to highlight the importance of collaborative approach to the correct diagnosis.

Case report: We describe a case of 46 year old female that presented with the complaints of painless swelling over the floor of the mouth since 1 year. Computed Tomography showed the multiple high density lesions in the sublingual space attached to the left medial aspect of the mandible at the myelohyoid line with no obvious extension or soft tissue component. Following this, the patient was posted and planned for total surgical excision under general anesthesia which showed that the mass lesion was in the left sublingual space without mandibular involvement. Diagnosis was confirmed based on the histopathological report which showed it to be an ossifying fibroma.

Conclusions: Ossifying fibroma is a rare bony tumor of the mandible with different morphological features that are often mistaken for other benign Osseo fibrous lesions. Hence, a multidisciplinary approach including clinical, radiological and an accurate histopathological report post-operatively are mandatory for correct diagnosis and appropriate management.