Primary Maxillofacial Large B-Cell Lymphoma in Immunocompetent Patients: Report of 5 Cases

Lymphomas of the oral cavity represent 5% of all lymphomas. They usually occur in immunocompromised patients. Lymphoma arising within a single bone, without visceral or lymph node involvement, is known as primary intraosseous lymphoma. It is a rare condition and constitutes 3.1% of malignant bone tumors and 5% of extranodal lymphomas. Primary lymphoma of the jaw is seldom seen and it is often misdiagnosed. Clinically, the manifestations are usually similar to an odontogenic tumor, cyst, or infection. Radiographically it appears as a radiolucent area that may mimic endodontic lesion, periodontal pathology, or odontogenic cyst or tumor. The initial presentation is commonly followed by multiple unnecessary extractions and/or root canal treatments. We present five cases of rare primary lymphoma of the maxillofacial complex, four of them intraosseous

Evaluation of Scatter and Zone of Occupancy for a Hand-Held X-Ray Device

Scatter radiation from the patient could be of concern for the population in close proximity to the occupancy zone when using a hand-held x-ray device. It is claimed that Kavo Nomad Pro-2 (Kavo Kerr) external shielding device eliminates scatter radiation. The objective of this study was to test and verify this claim. The scatter radiation of the Kavo Nomad Pro-2 was tested in an operatory room evaluating the horizontal and vertical occupancy zones. The scatter radiation was measured using a solid-state detector TNT 12000 Dosimeter detector and ion chamber. In the center of the room the operator was located at o degree coordinate point. From “0” degree coordinate point were tracings every 30 degrees in the floor. The exposures using the Kavo Nomad Pro-2 will be made at intervals of 10 seconds from 0 to 140 cm distance in 35 cm increments every 30 degrees intervals and the ion chamber will be placed in each location. The highest scatter radiation at a horizontal occupancy zone was reported at 180 degrees. Whereas the highest scatter radiation measured at the vertical occupancy zone was at 180 and 150 degrees at a distance of 35 cm