Femoral Triangle

A 42-year-old woman from Mumbai undergoes elective femoral artery catheterization for coronary angiography. Three days post-procedure, she develops a tender, fluctuant swelling in the right groin with fever (38.5°C). Ultrasound shows a 4 cm fluid collection within the femoral triangle, separate from the artery. Blood cultures grow Staphylococcus aureus. Which structure within the femoral triangle is most likely to have been inadvertently punctured during the procedure, predisposing to abscess formation?

Which is the most common cause of femoral artery thrombosis following femoral artery puncture for angiography?

Which anatomical feature best distinguishes the femoral artery from the femoral vein within the femoral triangle?

A 58-year-old man from Delhi presents to the emergency department with acute right groin pain and swelling following a fall while climbing stairs. On examination, there is a tender, pulsatile mass in the right groin below the inguinal ligament. The mass is expansile on palpation, and a continuous 'machinery' murmur is heard on auscultation. Femoral pulses are bounding distally. What is the most likely vascular complication at this anatomical site?

A 28-year-old woman undergoes femoral artery catheterization for coronary angiography. Six hours post-procedure, she develops a pulsatile mass in the groin with pain and mild swelling. Doppler ultrasound confirms a 2.5 cm pseudoaneurysm of the femoral artery with a 4 mm neck. She is hemodynamically stable with intact distal pulses. What is the most appropriate next step in management?