Rare fibrolipoma of attached gingiva: A case report and review of the literature.

Lipoma is a rare benign tumor. Fibrolipoma, a variant of lipoma, is relatively uncommon in mouth tissues. Among all benign lesions of oral cavity, the approximate incidence rate of lipoma is 1%-4%, with a prevalence rate of about 0.0002%. Fibrolipoma is an extremely rare subtype of lipoma, especially in the attached gingiva. This subtype accounts for 1.6% of all facial lipomas, with a prevalence rate of 1/5000 adults in the oral and oropharyngeal region. It is diagnosed by histopathologic and immunohistochemistry evaluation and treated by total excision. Due to the adhesion to the surrounding tissues and pseudo-infiltrating characteristics of this lesion, it can get mistaken with malignant lesions; therefore, a histological examination is mandatory. In this paper, a case of a patient with attached gingiva fibrolipoma treated by surgical excision is reported. This case report is about a 26-year-old female patient in Shiraz School of Dentistry with a fibrolipoma of attached gingiva. Because of fibrolipoma's growth tendency, adhesion to the surrounding tissues, and specific histological characteristics, its differential diagnosis with malignant infiltrating tumors is important. Surgical excision is the gold standard for treatment. Accurate differential diagnosis, careful histological examination, and periodic follow-up are essential.

Odontogenic myxoma with pain and uncommon histological feature in the mandible: A case report and review the literature.

Odontogenic myxoma (OM) is a rare benign painless, slow-growing lesion with local aggressive behavior. Pain and sensory disturbance and fibro-osseous appearance in histopathology have been rarely reported in OM. The authors reported a 52-year-old male case presented with a large gingival mass around a mobile mandibular right first molar extended to the distal aspect of the third molar. Microscopic examination of the incisional and excisional biopsy revealed an OM with numerous newly formed bone or cementum-like material present throughout the specimen like those seen in fibro-osseous lesions. For avoiding to recurrence, a segmental mandibulectomy was performed and a metal plate was inserted to the right mandible defect under general anesthesia. Rehabilitation was completed with the placement of implants. We review and discuss about this variety.