Iatrogenic pseudoaneurysms are a known risk of arterial access, particularly with "high" or "low" punctures, large cannulas, or anticoagulant use. While small , asymptomatic pseudoaneurysms (<2 cm…
The " lambda " sign refers to paratracheal and bilateral hilar uptake resembling the Greek letter lambda, while the " panda " sign refers to prominent bilateral uptake in the parotid, lacrimal, and…
The Abraham Lincoln sign (black beard sign) is seen on radionuclide bone scan, characterized by intense tracer uptake in the mandible, outlining it in a beard-like pattern. It is most commonly…
It is characterized by vertical radiotracer uptake along both sacral alae connected by a horizontal line of uptake across the sacral body, forming an "H" configuration that resembles the Honda…
Superscan is characterized by markedly increased radiotracer uptake within the skeletal system, with minimal to absent activity in the urinary tract and soft tissues, reflecting predominant tracer…
A button battery lodged in the esophagus is a highly dangerous medical emergency. On a radiograph, it can be reliably distinguished from a simple coin by looking for its unique and incontrovertibly…
Inhaled food items, such as peanuts, will not be visible on standard radiographs. Instead, we must look for secondary signs of airway obstruction- hypertransradiant lung on an inspiration film air…
Gynecomastia is the most common benign male breast condition and characteristically presents on a mammogram as a "flame-shaped" or triangular asymmetric density radiating directly from the…
Breast hamartomas (fibroadenolipomas) are benign tumors that characteristically display a "breast within a breast " appearance on mammograms. They present as a well-circumscribed mass containing a…
Degenerating fibroadenomas can be confidently diagnosed without the need for a biopsy when they display their pathognomonic coarse, curvilinear, "popcorn-like" calcifications within a circumscribed…
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