Central Acinic Cell Carcinoma of the Mandible Simulating as Benign Odontogenic Lesion: A Case Report

Centrally occurring salivary gland tumors are rare. Because of a considerable overlap between the clinical and histopathological features, this group of tumors often produces a diagnostic difficulty to the clinicians and oral pathologists. Acinic cell carcinoma (ACC) is an unusual, low-grade, malignant salivary gland tumor that represents approximately 2% of the salivary gland tumors with almost 90% arising in the parotid gland. The rest involve the submandibular and the minor salivary gland. ACC of the jaw is extremely rare and, to our knowledge, only 8 cases have been reported in the English literature. Herein, a case of primary intraosseous ACC of the mandible in a 31-year-old woman is presented. The present case is unique, as the central ACC has never been reported in a patient in the third decade of life. The complete surgical removal of the tumor was carried out under general anesthesia along with the extraction of teeth #31, #32, #41, and #42. The follow-up period of 1-year was uneventful.

Giant Osteosarcoma of the Mandible

Osteosarcoma is a rare primary malignant bone tumor with considerable variations not only in clinical and histologic appearance, but also in the course and prognosis of the disease. It mainly occurs in the metaphyseal region of long bones. Jaw osteosarcomas are relatively rare as compared to those occurring in long bones and share similar histopathologic features, but biologically behave in a different manner. Early diagnosis and complete resection of the lesion are necessary for better prognosis. This report highlights an aggressive and fatal case of mandibular osteosarcoma in a 23-year male patient, which, if diagnosed earlier, would have added some valuable years to the patient's life.

Ortho Keratinized Odontogenic Cyst with Dentinoid Formation

Orthokeratinized odontogenic keratocyst (OOC) was first identified as orthokeratinized variant of odontogenic keratocyst in 1981 by Wright, due to its different histology and relatively low recurrence rate. Parakeratinized odontogenic cyst is now considered as keratocystic odontogenic tumor (KCOT) owing to its neoplastic nature. Although rare, calcification in the form of dystrophic calcification, dentinoid and cartilage has been reported in KCOT, but calcification in OOC is extremely rare and no case in English literature has been reported so far. Here, we report the first case of OOC with calcification located in the mandible of a 40-year female.

Basal Cell Adenoma of Hard Palate Involving Maxillary Alveolus

Minor salivary glands are relatively rare location for these tumors. Microscopically, they are composed of isomorphic cells, similar to basaloid cells with palisading arrangement and distinctive basement membrane like material. Herein, we report a case of BCApresenting as a soft tissue growth of left hard palate involving maxillary alveolus of a 41-year male.