ABSTRACT
A modified coaxial technique for the biopsy of small or deeply situated lesions using computed tomographic (CT) guidance is described. A 22-gauge needle was passed coaxially through an outer 18-gauge introducing needle and aspiration biopsy was performed. This modified coaxial technique allows for multiple biopsies to be obtained safely, expeditiously, and repeatedly.
Subject(s)
Biopsy, Needle/methods , Tomography, X-Ray Computed , HumansABSTRACT
The relative value of magnetic resonance imaging (MRI) versus computed tomography (CT) for imaging benign and malignant lesions of the maxilla and mandible was studied in a group of 16 patients. The imaging methods were evaluated for their ability to detect the lesion and define lesion margins, soft tissue extension, and bone involvement. The abnormality was identifiable with both imaging methods. For benign cystic lesions of either the maxilla or mandible (50%), MRI was overall equal to or better than CT. Magnetic resonance imaging was superior to CT in the evaluation of lesion margins and soft tissue extent of disease, whereas it was equal or slightly inferior to CT in lesion detection and in the evaluation of bone involvement. In the imaging of malignant neoplasms (50%), MRI was overall superior to CT in all four categories reviewed. Magnetic resonance imaging also had the highest rate of correlation with clinical findings, either from physical examination or at the time of surgery.
Subject(s)
Magnetic Resonance Imaging , Mandibular Neoplasms/diagnosis , Maxillary Neoplasms/diagnosis , Tomography, X-Ray Computed , Adolescent , Adult , Aged , Aged, 80 and over , Child , Female , Humans , Jaw/anatomy & histology , Jaw/diagnostic imaging , Male , Mandibular Diseases/diagnosis , Mandibular Diseases/diagnostic imaging , Mandibular Neoplasms/diagnostic imaging , Maxillary Diseases/diagnosis , Maxillary Diseases/diagnostic imaging , Maxillary Neoplasms/diagnostic imaging , Middle AgedABSTRACT
We report an unusual case of spontaneous renal rupture, including intrarenal and perirenal hemorrhage, which was evaluated by computerized tomography. Various causes of spontaneous rupture are discussed and a possible mechanism in this patient is suggested.
