A lobulated collection in the sternal head of the pectoralis major muscle with floating echoes. Approximate size - 80 x 50 x 30 mm.
Edematous clavicular head and rest of the sternal head of the pectoralis major muscle.
Normal costal head of the muscle. Normal pectoralis major tendon. Normal pectoralis minor muscle.
Patent axillary vessels. Few adjacent subcentimeter-sized reactive nodes. Overlying subcutaneous fat edema without a collection.