Extraosseous calcifying cystic odontogenic tumor: An uncommon variant
A 17-year-old male patient reported with a chief complaint of swelling in relation to the right region of the lower jaw, since 4 months. Patient denied any family, medical, dental or personal (habit) history. Extra-oral examination was insignificant. On intra-oral examination, a pinkish dome-shaped, oval nodular growth was seen measuring about 1 × 1 cm in diameter, in relation to 48 region. On palpation, it was asymptomatic, fluctuant and sessile. The overlying mucosa was normal with superficial blood vessels, giving a pinkish appearance []. No other intraoral deformity was noted. Intra-oral periapical radiograph (IOPA) shows no osseous involvement, but vertically impacted 48 []. All other teeth showed normal development and eruption. Based on these features a differential diagnosis of hyperplastic or reactive lesions arising from the gingival and eruption cyst was made.\nExcisional biopsy under local anesthesia was performed. Microscopic examination showed a cyst lined by an epithelium with numerous ghost cells and few calcified masses. The basal cells were cuboidal to columnar with darkly staining nuclei, polarized away from the basement membrane, and showed palisading appearance similar to ameloblasts []. Based on these features a definite microscopic diagnosis of ECCOT was made. No recurrence was noted at a one-year follow-up.