A 76-year-old female presented to the emergency department with complaints of pain in the left thigh and hip along with swelling for five days. Medical history: Β  She had a history of chronic left leg sciatic pain that led to a fall two days before the onset of these symptoms. She was also diagnosed with colon cancer and underwent a low anterior colorectal resection, eight years ago. Physical examination: The patient was found to be tachycardic and delusional. She was afebrile but had leukocytosis.

She also had significant crepitus to the left thigh and knee. Results of the axial CT images with IV contrast of the lower pelvis (A and B) are presented in the cover image above. *This Case Challenge is from the Editorial Team of Docplexus and is meant for educational purposes only. ##Disclaimer## The content provided on Docplexus is intended for educational purposes only. While we strive to…