Sinonasal myxoma in an infant.

Myxomas of the maxillofacial region are neoplastic entities of mesenchymal origin most often associated with odontogenic origin; sinonasal myxoma is rare, located in the nasolabial region and originating from the sinonasal tract. The aim of the current study was to report a well-documented case of sinonasal myxoma in a 12-month-old boy, initially presenting with obliteration of his left nasolacrimal duct. A soft-tissue mass of the nasobuccal groove, firmly attached to the underlying bone, was revealed. After biopsy where benign fibroblastic elements were found, the tumor was removed surgically in wide margins, whereas great care was taken to reconstruct the involved adjacent anatomic structures and preserve facial aesthetics. Histopathologic findings were compatible with an extragnathic, nonodontogenic sinonasal myxoma originating from the nasolacrimal duct. The clinical significance of the case presented was its rather rare location and origin. Three and a half years postoperatively, functional and aesthetic results were satisfactory with no sign of recurrence. To the authors' knowledge, this is the second youngest reported case in the literature.

Peripheral osteoma of the maxillary alveolar process.

Osteoma is a benign, slow-growing tumor characterized by proliferation of compact or cancellous bone. Solitary osteomas are classified as peripheral, central, or extraskeletal. Peripheral osteomas of the oral cavity are unusual and the maxilla is rarely affected. They manifest as asymptomatic, fixed tumors of bony-hard consistency that may be sessile or pedunculated. Radiographically, a well-circumscribed round or oval radiopaque mass is seen that is microscopically composed of cancellous or trabecular bone. A case of a compact, peripheral osteoma arising from the buccal plate of the alveolar ridge of the maxilla in a 64-year-old patient is presented. According to our literature review, this is the seventh case reported in the maxillary ridge.