Bunch of grapes sign (bronchiectasis)
Beyond
bronchitis: a review of the congenital and acquired abnormalities of the bronchus. Types of bronchiectasis. Axial CT imaging of three different patients demonstrating the bronchiectasis types. a Cylindrical-type bronchiectasis is characterised by uniform nontapering or gradually tapering bronchial dilatation. b Varicose-type bronchiectasis is characterised by a beaded or “string-of-pearls” appearance with areas of alternating bronchial narrowing and dilatation. c Cystic-type bronchiectasis is characterised by markedly dilated cyst-like bronchi, often extending to the pleural surface with a “cluster-of-grapes” appearance
The bunch of grapes sign, a.k.a. cluster of grapes sign, is a characteristic imaging finding on CT seen in bronchiectasis. Closely apposed dilated bronchi may look like multiple adjacent thin walled cysts which mimic the appearance of a bunch of grapes.
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