Monday, July 30, 2012

QUIZ: Which rare but distinctive facial disease is seen on this...







QUIZ: Which rare but distinctive facial disease is seen on this 3D CT image? Click for ANSWER






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Tuesday, July 10, 2012

Tree in bud sign - describes the CT chest appearance of multiple...











Tree in bud sign - describes the CT chest appearance of multiple centrilobular nodules that are connected by branching opacified bronchioles. Although initially described in patients with endobronchial tuberculosis, it is now recognised in a large number of conditions ranging from small airways infections like mycobacterium avium complex, to connective tissue diseases like rheumatoid arthritis, to neoplastic conditions like bronchioloalveolar cell carcinoma.






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Tuesday, July 3, 2012

Winking owl sign - vertebral metastases are common in oncology...











Winking owl sign - vertebral metastases are common in oncology patients. A reliable sign of osteolytic spinal metastases on AP radiographs is loss of the normal pedicle contour. The appearance of unilateral pedicle absence has been likened to that of a winking owl with the missing pedicle being the closed eye, the contralateral pedicle being the open eye and the spinous process being the beak. In the above example a metastasis has obliterated the left pedicle at T11. The T12 pedicles are outlined as a reference point.






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Thursday, June 21, 2012

Happy 2 month anniversary!!



Our Radiology Signs site today turns 2 months old! It has been a big couple of months with 28 signs...



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Thursday, June 7, 2012

Breast within a breast sign - refers to the common mammographic...











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.






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