Adenoid cystic carcinoma is a rare epithelial tumour, and comprises about 1% of all malignant tumours of the oral and maxillofacial region. It is a malignant tumour which may develop in the trachea, bronchus, lungs or mammary glands, in addition to the head and neck region. Occurrences in the head and neck are mostly detected in the major salivary gland, oral cavity, pharynx and paranasal sinus where it presents as a slow growing firm nodular swelling. The aim of the article is to highlight the unique presentation of adenoid cystic carcinoma as a solitary ulcer on the floor of the mouth.
Bronchi ; Carcinoma, Adenoid Cystic* ; Head ; Lung ; Mammary Glands, Human ; Mouth* ; Neck ; Pharynx ; Salivary Gland Neoplasms ; Salivary Glands ; Trachea ; Ulcer*

Ossifying fibromas are benign fibro-osseous tumors of mesenchymal origin. Although ossifying fibromas have principally been found in the jaw, they have also been reported in the frontal, ethmoid, sphenoid, and temporal bones, as well as the orbit and anterior cranial fossa. Ossifying fibromas affecting the jaw exhibit variable behaviors ranging from slow growth to occasionally aggressive local destruction. In the present article, we discuss a differential diagnosis considered for maxillary swellings and report a rare case of ossifying fibroma occurring in the maxilla.
Bone Neoplasms ; Cranial Fossa, Anterior ; Diagnosis, Differential* ; Fibroma, Ossifying ; Jaw ; Maxilla* ; Orbit ; Temporal Bone