tailieunhanh - Ebook Diagnostic imaging oral and maxillofacial: Part 2

(BQ) Part 2 book "Diagnostic imaging oral and maxillofacial" presents the following contents: Temporomandibular joint, maxillary sinus and nasal cavity, masticator space, parotid space, mandible and maxilla, oral cavity, differential diagnoses. | Diagnostic Imaging Oral and Maxillofacial Left Lateral cephalometric radiograph in the same patient shows numerous round or punched-out radiolucencies in the skull. Note that most of the lesions are well defined but not corticated a classic feature of the lesions of multiple myeloma. Right AP radiographs in the same patient show numerous radiolucencies in the right humerus and the left femur Ỉr2í. Note the pathologic fracture in the humerus S3. The humerus and the femur are the most commonly involved long bones. TERMINOLOGY Abbreviations Multiple myeloma MM Synonyms Plasmacytoma Plasma cell myeloma Myeloma Definitions Monoclonal malignant proliferation of plasma cells Solitary plasmacytoma is localized form Multiple myeloma is most common malignancy of bone in adults IMAGING General Features Best diagnostic clue Punched-out mostly well-defined round radiolucencies without corticated border Location Most common locations Calvarium mandible pelvis sternum clavicle humerus and femur In oral cavity Mandible maxilla Posterior anterior Size Small Usually mms to 1 cm at diagnosis lesions may coalesce and become much larger Morphology Multiple small unilocular round or oval radiolucencies Lesions that coalesce may appear multilocular Occasionally lesions appear ill-defined and infiltrative Radiographic Findings Extraoral plain film Panoramic imaging will show lesions in ramus and angle 700 Diagnostic Imaging Oral and Maxillofacial Generalized rarefaction may be present Lamina dura around tooth roots may be lost Follicular cortical outline of developing teeth may be less distinct Lateral cephalometric images will demonstrate skull lesions CT Findings CBCT and bone CT Best show extent of disease Radiolucencies may be present in skull and cervical spine Skull lesions present in 45 of patients Imaging Recommendations Best imaging tool CT or CBCT for H N lesions Screening for additional lesions in femur and humerus done with long-bone radiographs DIFFERENTIAL DIAGNOSIS .

• Y khoa - Dược
• Diagnostic imaging oral
• Diagnostic imaging maxillofacial
• Temporomandibular joint
• Maxillary sinus
• Nasal cavity
• Masticator space
• parotid space
• Mandible and maxilla