Body CT Flash Cards

Meningocele granulomatous mediastinitistb sarcoidosis

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Unformatted text preview: mmon cause of posterior mediastinal mass in patients with neurofibromatosis? Meningocele Granulomatous mediastinitisTB, Sarcoidosis, Chronic mediastinal lymph node enlargement with fibrosis. Calcification of lymph nodes common Histoplasmosis, causes? Sclerosing Similar but no calcification with sclerosing mediastinitis. mediastinitis versus granulomatous mediastinitis Pericardial 60% features? cyst anterior right cardiophrenic angle, 30% left cardiophrenic angle, 10% occur higher in mediastinum. Morgagni hernia features? Anteromedial diphragmatic foramen of Morgagni. Cardiophrenic angle mass, 90% occur on right. Usually contains liver or omentum. Right upper lung lobe segments? Apical Posterior Anterior Left upper lung lobe segments? Apicoposterior Anterior Superior lingula Inferior lingula Right middle lung lobe segments? Medial Lateral Right lowerSuperior Anterior Medial Lateral Posterior lung lobe segments? Left lower lung lobe segemnts Superior Anteromedial Lateral Posterior Egg-shell calcificationSarcoidosis,lymph nodes? Silicosis, of thoracic TB PulmonaryAplasia has rudimentary bronchus. agenesis versus pulmonary aplasia? PulmonarySingle dilated vascular sac or tangle of dilatated tortuous vessels. Mostly subpleural, Rapid enhancement and rapid washout. arteriovenous fistula features? PulmonaryCystic or solid, features? left posteromedial lung. All have anomalous systemic arterial supply sequestration Majority Intralobar sequestration versus Extralobar recurrent or chronic infection, region of hyperlucent lung, cystic or multicystic structure with air-fluid levels, consolidated or collapsed lung. Extralobar: diagnosed in infants or children, almost always solid mass that rarely contains air. Venous drainage usually via systemic veins. Intralobar: diagnosed in adults, sequestration? Hypogenic almost always (scimitar)? lung sydrome on right side, hypoplasia of lung, hypoplasia of ipsilateral pulmonary artery, Anomalous pulmonary venous return (scimitar vein) to vena cava or right atrium. Anomalous systemic arterial supply to portion of hypoplastic lung Extraperitoneal space communicates with? Retroperitoneal space, retropubic space of Retzius continuous with posterior pararenal space and extraperitoneal fat of abdominal wall. Perineum Lies below pelvic diaphragm, includes ischiorectal fossa Normal fertile ovary cm. 2 x 3 x 4 dimensions? Bladder carcinoma CT features? Focal thickening of bladder wall, Weakly enhancing mural nodule, Calcifications 5%, Perivesical fat spread, Pelvic lymph nodes > 10 mm Uterine leiomyoma CT features? 40% of women > 30 yo, homogeneous, heterogeneous masses, hypodense,isodense, or hyperdense, dystrophic, mottled calcifications, cystic degeneration CarcinomaSCC 85%, ADCA 15%, hypo or isodense to normal cervix, Pelvic fluid collections, Direct extension (thick irregular tissue strands), Enlarged lymph nodes > 10 mm of cervic features? Endometrial malignancy features? endometrial cavity, surgical staging method of choice, Enlarged pelvic lymph nodes > 1 cm hypodense mass within Ovarian cancer features? cystic 66%, bilater 25%, Nonfunctional 85%, Cystic with thick, irregular walls and internal septations. Peritoneal implants, Ascites, Omental cake (irregular, thick greater omentum), follow gonadal lymphatics Normal ovarian follicle size? <3 cm Functional Benign cyst features? ovarian follicular or corpus luteum cysts, well-defined, thin walled, < 3 cm PID CT features? Thickening of fallopian tubes (early), Enlargement and abnormal enhancement of ovaries, Dilated fallopian tubes fill...
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