This image shows the sequence of a guided procedure in a patient with rheumatoid arthritis and a mass of the right shoulder. Although guided aspiration was useful for the fluid examination, surgery was performed for a definitive diagnosis of the acromioclavicular cyst. Which condition is the finding MOST associated with this pathology?

Which carpal bone is visualized medially to the ulnar nerve on a transverse scan of the wrist at the level of the distal wrist crease?

A 62-year-old man presents with left shoulder pain. The ultrasound image was taken at the patient's maximum abduction (45 degrees). Which of the following rotator cuff pathologies is BEST evaluated with this shoulder position?

Which of the following is the MOST appropriate approach to use when performing an ultrasound-guided aspiration on a Baker's cyst in the posterior knee of a 76-year-old female patient?

Which of the following is inappropriate for conventional musculoskeletal ultrasound?