Our Radiology Signs site today turns 2 months old! It has been a big couple of months with 28 signs...
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Radiology signs is a radiopaedia.org project. Our aim is to post the highest quality examples of all the major ‘classic’ imaging / radiologic / radiographic signs. Our main blog site is located at: http://radiologysigns.tumblr.com/
Breast within a breast sign - refers to the common mammographic appearance of breast hamartomas (fibroadenolipomas). Since these benign lesions are well-circumscribed and contain a mixture of fibrous, glandular and fatty tissue (just like normal breast), it is not surprising that the appear very much like a second breast sitting within the actual breast.
Finger in glove sign - refers to the characteristic finger-like appearance of mucous plugs within dilated bronchiectatic central bronchi in allergic bronchopulmonary aspergillosis (ABPA). Seen here in the right upper lobe, this condition almost exclusively occurs as the result of chronic asthma. The sign can be observed on CXR and CT.