Primary intraosseous squamous cell carcinoma (PIOSCC) is a rare lesion that almost exclusively occurs in the jaws. Most PIOSCCs originate from epithelial lining of odontogenic cysts, especially from radicular, residual, and dentigerous cysts. A few cases have been shown to arise from keratocystic odontogenic tumors (KCOTs). This is a report of a case of PIOSCC that arose from an untreated kerat...

Intraosseous mucoepidermoid carcinoma is a rare tumor which affects women more than men and is more common in the mandible. The radiological examination reveals a well-defined unilocular or multilocular radiolucent lesion. This tumor may resemble a glandular odontogenic cyst, particularly in incisional biopsies. The accurate diagnosis of these lesions is imperative because the subsequent treatm...

Primary intraosseous squamous cell carcinoma (PIOSCC) is a rare type of odontogenic carcinoma arising from the jawbone. Odontogenic cysts are true cysts that arise from the dental epithelium, which is associated with tooth formation. The epithelial lining of odontogenic cysts has the potential to transform into various types of odontogenic tumor; however, this transformation from an odontogenic...

Adenoid cystic carcinoma (ACC) is an uncommon malignant tumor of the salivary glands. It generally involves the minor salivary glands, and the hard palate is the most common site. ACC presents as a slow growing mass with mild pain and usually demonstrates perinueral invasion. An intraosseous occurrence of ACC is a very rare and when it occurs the mandible is more commonly involved than the maxi...

Benign primary intraosseous meningioma presenting with osteolytic skull lesion and soft-tissue component is rare. CT and MR imaging of a patient with frontoparietal scalp swelling showed an osteolytic intracalvarial lesion with an extradural soft-tissue component. Following wide surgical resection, the histological examination revealed an intraosseous chordoid meningioma. The clinical and radio...

BACKGROUND Ameloblastic carcinoma secondary type is an extremely rare and aggressive odontogenic neoplasm that exhibits histological features of malignancy in primary and metastatic sites. It arises through carcinomatous de-differentiation of a pre-existing ameloblastoma or odontogenic cyst, typically following repeated treatments and recurrences of the benign precursor neoplasm. Identification...