Unusual Recurrent Dermoid Cyst: A Case Report.

Dermoid cysts are unusual developmental lesions occurring most frequently on the face, scalp, neck, and trunk, and represent <0.01% of all cysts of the oral cavity. Histologically, depending on the presence of adnexal structures and derivatives of germ layers, theses cysts are classified as dermoid, epidermoid, and teratoid cysts. Anatomically, they are divided into median genioglossal, median geniohyoid, and lateral cysts. Clinically, a distinction between supra and inferior type as well as between central and lateral type is proposed in relation to the mylohyoid muscle and the midline, respectively. Enucleation via intraoral and/or extraoral approach is the method of treatment. This cyst elicits a good prognosis with low malignancy and recurrence rate.

Recurrent Peripheral Odontogenic Fibroma: A Case Report with the Review of Literature

Peripheral odontogenic fibroma (POF) is a rare benign mesenchymal odontogenic neoplasm with or without odontogenic epithelium, which is considered to be the mucosal analogue of central odontogenic fibroma. Though peripheral odontogenic tumours are rare, comprising of only 0.05% of all biopsy specimens, POF is the most common peripheral odontogenic tumour, more common than its central counterpart by a ratio of 1.4: 1. In this report, we describe a healthy 40-year-old female who was seen with a recurrent POF of the left mandible.

Peripheral Ameloblastoma of Mandible: A Rare Case Report.

Peripheral ameloblastoma (PA) is a rare, benign, extraosseous neoplasm of the odontogenic epithelium. It is an exophytic growth which is localized to the soft tissues overlying the tooth-bearing areas of maxilla and mandible. In most cases, there is no radiological evidence of bone involvement, except for cupping or saucerization of the underlying bone. Histologically, the PA consists of proliferating odontogenic epithelium that exhibits the same histomorphological cell types and patterns as seen in the intraosseous ameloblastoma. The PA is a slow growing and non-invasive, and recurrence is uncommon following excision, in contrast to central ameloblastoma which is locally invasive and can destroy large segments of the jaw. We report here a case of the plexiform type of PA.