Radiology

Question 1

Lytic bone lesions on x-ray films? Think:

Answer 1

multiple myeloma
primary bone tumor
metastasis (most commonly lung, renal, thyroid, breast)

Question 2

Blastic bone lesions on x-ray? –>

Answer 2

Metastasis (most commonly breast, prostate, lymphoma)
Pagets disease
Medulloblastoma in pediatrics

Question 3

Large mediastinum =

Answer 3

aortic aneurysm

Lymphadenopathy

Question 4

Lung infiltrated with an effusion =

Answer 4

Staph pneumonia, strep pneumonia, lung infarct, tuberculosis

Question 5

Small bowel obstruction on x-ray? Think:

Answer 5

adhesions
hernia
intussusception 
gallstone ileus
carcinoma

Question 6

Large bowel obstruction on x-ray? Think

Answer 6

carcinoma
hernia
diverticulitis
intussusceptions

Question 7

Small kidneys? Think

Answer 7

Renal artery disease

Chronic hydronephrosis, glomerulonephritis, or pyelonephritis

Question 8

Large kidneys? think

Answer 8

Acute pyelo, glomerulonephritis
renal vein thrombosis
carcinoma
wilms tumor

Question 9

Ring-enhancing lesion in brain of immunoCOMPETENT

Answer 9

metastatic tumors
demyelinating disease
pyogenic abscess

Question 10

Ring-enhancing lesion in brain of immunoCOMPROMISED

Answer 10

toxoplasma encephalitis
primary CNS lymphoma (Epstein-Barr virus)
Tuberculosos (in endemic areas!)

Question 11

When evaluating biliary obstruction VS acute cholecystitis, use a ___ scan

Answer 11

HIDA

Also test of choice for congenital abnormalities of biliary tract, including biliary atresia!