Pathologic fractures of the jaw are usually associated with aggressive, destructive lesions or malignant lesions of the jaws. Aneurysmal bone cysts (ABC) of the jaws are benign lesions which normally do not cause destruction to such an extent. This article reports a relatively aggressive ABC of the mandible in a 19 year-old male which destroyed the buccal and lingual cortices as well as th...

PURPOSE This study was done to evaluate the diagnostic utility of dynamic positron emission tomography (PET) with F-18 fluorodeoxyglucose (FDG) imaging in patients with suspected malignant pulmonary lesions. We wanted to test the hypothesis that the rate of FDG uptake (FDG influx constant values) would differentiate malignant from benign lung or mediastinal lesions. MATERIALS AND METHODS We p...

Artificial Intelligence based deep learning techniques using Convolutional Neural Networks (CNNs) can be used to identify oral pre-cancerous (potentially malignant) and cancerous lesions differentiate them from normal mucosa.

BACKGROUND AND PURPOSE CT and MR imaging features of benign and malignant sinonasal lesions are often nonspecific. Therefore, we evaluated the ADC-based differentiation of these lesions. MATERIALS AND METHODS We retrospectively assessed ADCs of 61 patients with histologically proved sinonasal tumors and tumorlike lesions: 19 benign lesions, 28 malignant tumors, and 14 inflammatory lesions. Ov...

Gastric protruding lesions are frequently encountered by health screening esophagogastroduodenoscopy. They can be classified into epithelial lesion and subepithelial lesion. Epithelial gastric lesions are generally divided into benign and malignant. Benign lesions include some types of polyps, i.e., hyperplastic polyp, fundic gland polyp, and gastric adenoma. Malignant lesions include carcinoid...

This study was undertaken to examine the ability of SPECT in differentiation of a pulmonary lesion suspecions of lung cancr. A total of 170 patients with suspected lung cancer were studied. A dose of Tl-201 chloride {148-296 MBq) was injected intravenously and tomographic early and delayed scans were obtained at 15 miniutes and 3 hours post injection, respectively. Delayed Tl-201 SPECT vi...

PURPOSE Benign and malignant pulmonary lesions are not easy to distinguish in a clinical setting. We investigated the feasibility of using parametric imaging of the rate constant Ki to diagnose the nature of pulmonary lesions. METHODS Dynamic multi-bed scanning followed by a routine examination was performed on 21 patients with pulmonary lesions who were divided into two groups with malignant...

BACKGROUND Oral white lesions that cannot be clinically or pathologically characterized by any specific disease are referred to as leukoplakia. Such lesions are well known for their propensity for malignant transformation to the extent of 10-20%. Exfoliative cytology is a simple and useful screening tool for detection of malignant or dysplastic changes in such lesions. AIMS A clinico-epidemio...