Sunday, January 13, 2008

3 - Radiodiagnosis and Radiotherapy mcqs - 11 to 21

11q) Double Shadow is seen in
a. Mitral Stenosis
b. IBD
c. Pinealoma
d. None of the above

12) Hilar dance on fluoroscopy is seen in cases of
a. ASD
b. Bronchiectasis
c. Both
d. None

13) Consistent feature of Pulmonary Tuberculosis
a. Upper lobe infiltrates
b. Cavities
c. Miliary mottlings
d. Nothing

Reference: Harrison 15th Edition Chapter 169. The initial suspicion of pulmonary tuberculosis is often based on abnormal chest radiographic findings in a patient with respiratory symptoms. Although the "classic" picture is that of upper lobe disease with infiltrates and cavities, virtually any radiographic pattern from a normal film or a solitary pulmonary nodule to diffuse alveolar infiltrates in a patient with ARDS may be seen. In the era of AIDS, no radiographic pattern can be considered pathognomonic.

14) Water’s view is
a. Anteroposterior view
b. Occipitomental view
c. Occipitofrontal view
d. Lateral View

Reference: Logan Turner

15) Gray is a Unit for
a. Activity
b. Absorbed dose
c. Exposure
d. Dose equivalent

16) Cranio spinal irradiation is given for
a. Medulloblastomas
b. Pineoblastomas
c. Pineal germinoma
d. All of the above

Reference: Harrison 15th Edition

17) Rhabdomyosarcoma is treated by
a. Chemotherapy
b. Radiation
c. Surgery
d. All of the above

Reference: OP Ghai 6th Edition Page 576.

18) Which one of the following is a recognized X-Ray feature of rheumatoid arthritis?
a. Juxta-articular osteosclerosis.
b. Sacroilitis.
c. Bone erosions.
d. Peri-articular calcification.

Reference : Given in Harrison 15th Edition Chapter 312 Page 1933.

19) High resolution computed tomography of the chest is the ideal modality for evaluating:
a. Pleural effusion.
b. Interstitial lung disease.
c. Lung mass.
d. Mediastinal adenopathy.

Reference Textbook of Radiology and Imaging - 7th Edition - David Sutton Page 187 Harrison 15th Edition.

20) CT scan of a patient with history of head injury shows a biconvex hyperdense lesion displacing the grey-white matter interface. The most likely diagnosis is:
a. Subdural hematoma.
b. Diffuse axonal injury.
c. Extradural hematoma.
d. Hemorrhagic contusion.

Reference Schwartz Surgery : 7th Edition Page 1882 : Fig 40-1 Bailey & Love,23rd, Pg-550.

21) Intestinal infarction all are signs on CT except?
a) Bowel wall thickening
b) Thumb printing
c) Free Peritoneal air
d) Intramural gas

*The most common CT finding in bowel ischemia is bowel wall thickening, although it is nonspecific. The thickened bowel wall is sometimes associated with the target sign, alternating layers of high and low attenuation within the thickened bowel wall, which results from submucosal edema or hemorrhage. However, the bowel wall is thinned or occasionally invisible when the involved bowel segment becomes gangrenous.
*Other CT findings of bowel ischemia reported in the literature include arterial occlusion, mesenteric or portal vein thrombosis, bowel dilatation, engorgement of mesenteric veins and mesenteric edema, intramural gas (intestinal pneumatosis), mesenteric or portal venous gas, lack of bowel wall enhancement, increased enhancement of the thickened bowel wall, and infarction of other abdominal organs
*The intramural gas is caused by dissection of luminal gas into the bowel wall across the compromised mucosa.
*Mesenteric or portal venous gas is an even less common CT manifestation of ischemic bowel disease and represents the propagation of intramural gas into the mesenteric venous system. Free intraperitoneal gas is an ominous CT sign in ischemic bowel disease because it indicates perforation of an infarcted bowel segment . Absent or poor enhancement of the bowel wall appears to be the most specific finding for bowel ischemia.


Thumbprinting is seen in plain Xray Abdomen and Barium studies only.

No comments:

Subscribe Now: Feed

Visitors currently online