Usefulness of cone-beam CT for presurgical assessment of keratoma (cholesteatoma) of the maxillary sinus.

Background: Evaluating the presurgical usefulness of cone-beam CT (CBCT) in the diagnosis and subsequent surgery of keratoma (cholesteatoma) of the maxillary sinus.

Methods: CBCT scans were obtained by using 3-dimensional CT (3DCT) apparatus. The exposure factors had a field of view of 16 × 12 cm, 120 kVp, 7 mA, and an exposure time of 20 seconds.

Radiographic enlargement of mandibular canal as first feature of non-Hodgkin's lymphoma.

Non-Hodgkin's lymphoma has the propensity to affect non-lymphoid tissue including oral tissue. Primary non-Hodgkin's lymphoma of the mandible mistreated as chronic periodontitis with diffuse enlargement of the mandibular canal and ice-cold numbness is very rarely described in English medical literature. A 57-year-old patient presented with a painful swelling on the left side of the mandible with a clinically chronic periodontitis associated with ice-cold numbness.

Mandible schwannoma (neurilemmoma) presenting as periapical lesion.

Schwannoma is a benign nerve tumour that originates from Schwann cells, which cover peripheral nerves. Intraosseous schwannoma of the jaw is rare. Primary schwannoma of the mandible presenting as a periapical radiolucency on a non-vital endodontically treated tooth has rarely been referred to in the English medical literature.