Spindle cell variant of ameloblastic carcinoma: A diagnostic challenge.

An 18-year-old male presented with a 3-week history of progressively enlarging nodular growth in the posterior right mandibular region. The patient denied the use of tobacco in any form or history of trauma, and his family history was unremarkable. Clinical examination revealed a 2 × 3 cm reddish-pink, firm lesion with palpable submandibular lymph nodes.

Clear cell odontogenic carcinoma: A rare case report with emphasis on differential diagnosis.

Clear cell odontogenic carcinoma (CCOC) is a rare odontogenic malignancy with a female predilection, typically presenting as swelling in anterior region of mandible. CCOC was classified as a malignant neoplasm of odontogenic origin by the WHO in 2005 as it exhibits an aggressive growth pattern, local recurrence, and tendency of distant metastasis. Histologically, CCOC is characterized by sheets and islands of vacuolated/clear cells.