FEEDING VESSEL SIGN --MCQ FRCR AND PG

16.Feeding vessel sign is noted on CT scan of chest in

a.hematogenous metastases

b.septic emboli

c.multiple pulmonary infarcts

d.Wegener’s granulomatosis

e.all

16.---e

The feeding vessel sign consists of a nodule or focal opacity that demonstrates a vessel leading to it .The presence of a feeding veseel indicates either that the lesion occurs in close proximity to small pulmonary vessels or the lesion has a hematogenous origin.(Hagga)

MCQ FOR FRCR AND PG---Atypical nontuberculous mycobacterial infection

Q.A middle aged immunocompetent female patient  was suffering from chronic cough and hemoptysis but no fever  All features are found in atypical nontuberculous  mycobacterial infections except

a.bronchiectasis

b.small nodules

c.tree-in-bud

d.lower lobe predominance

e.consolidation

ANS.-------d

Lingula and middle lobe predominance of lesion is noted in atypical nontuberculous mycobacterial infections.(Webb)

MCQ---SOLITARY PULMONARY NODULE

5.60 yrs old was subjected to chest x ray hemoptysis and a solitary pulmonary nodule is noted in left mid lung field.Features on CT/PET favouring  the diagnosis of malignancy are all except

a.irregular /speculated margin

b.laminated calcification

c.volume doubling time 30-400 days

d.enhancement more than 20HU

e.increased uptake of FDG

5.---b

Calcification occurs in upto 14% of lung cancer.The calcification is amorphous while diffuse solid ,central punctuate,laminated or popcorn-like calcification are noted in benign lesions.

Lung cancers typically double in volume (an increase of diameter of 26% in diameter) between 30-400days  (average 240 days).An absence of growth over a 2-year period is usually a reliable feature of benign nodule.

Cavitation in malignant nodule shows thick irregular wall (thin and smooth wall in benign nodule)