Extensive retroperitoneal and right thigh abscess in a patient with ruptured retrocecal appendicitis: An extremely fulminant form of a common disease

Figure 1 Retroperitoneal and right thigh abscess in a patient with ruptured retrocecal appendicitis. A: Retroperitoneal abscess with mass effect, demonstrating the upward-pushed duodenum and pancreatic head as well as compressed and encased inferior vena cava (white arrowheads); B: suspicious septic thrombus inside inferior vena cava (white arrow); C: reconstructed coronal image demonstrating extensive involvement of the abscess (short black arrows); D: dissection of the abscess in the right thigh via the femoral canal just beneath the femoral vessels (long black arrow).