Image Quiz: Abnormal Shoulder Films

The correct answer is degenerative joint disease (osteoarthritis; adult). Mild periarticular new bone formation can be seen on the humeral head and caudal aspect of the glenoid cavity (arrows).

The correct answer is degenerative joint disease (osteoarthritis; adult). Mild periarticular new bone formation can be seen on the humeral head and caudal aspect of the glenoid cavity (arrows).

The correct answer is degenerative joint disease (osteoarthritis; adult). Mild periarticular new bone formation can be seen on the humeral head and caudal aspect of the glenoid cavity (arrows).

The correct answer is primary bone tumor (adult). Moth-eaten–to–permeative lysis (asterisks) can be seen in the proximal humerus. Formation of amorphous periosteal new bone (arrows) can be seen on the cranial aspect of the proximal humerus.

The correct answer is primary bone tumor (adult). Moth-eaten–to–permeative lysis (asterisks) can be seen in the proximal humerus. Formation of amorphous periosteal new bone (arrows) can be seen on the cranial aspect of the proximal humerus.

The correct answer is primary bone tumor (adult). Moth-eaten–to–permeative lysis (asterisks) can be seen in the proximal humerus. Formation of amorphous periosteal new bone (arrows) can be seen on the cranial aspect of the proximal humerus.

The correct answer is osteochondritis dissecans (juvenile). Note the lesion on the humeral head. A thin, mineralized flap (arrows) is associated with the concave defect.

The correct answer is osteochondritis dissecans (juvenile). Note the lesion on the humeral head. A thin, mineralized flap (arrows) is associated with the concave defect.

The correct answer is osteochondritis dissecans (juvenile). Note the lesion on the humeral head. A thin, mineralized flap (arrows) is associated with the concave defect.

The correct answer is cellulitis/osteomyelitis. The stippled gas pattern superimposed on the proximal humerus creates the impression of lysis. Large gas pockets appear caudal to the humerus (asterisks), and a subtle periosteal reaction is visible on the caudal aspect of the proximal humerus.

The correct answer is cellulitis/osteomyelitis. The stippled gas pattern superimposed on the proximal humerus creates the impression of lysis. Large gas pockets appear caudal to the humerus (asterisks), and a subtle periosteal reaction is visible on the caudal aspect of the proximal humerus.

The correct answer is cellulitis/osteomyelitis. The stippled gas pattern superimposed on the proximal humerus creates the impression of lysis. Large gas pockets appear caudal to the humerus (asterisks), and a subtle periosteal reaction is visible on the caudal aspect of the proximal humerus.

The correct answer is supraspinatus tendon mineralization (adult). Note the mineralization of the supraspinatus tendon insertion (arrows). The cranial location of mineralization beyond the margin of the biceps tendon and the lack of a clavicular remnant on a caudocranial projection (not provided) may confirm the mineralization is within the supraspinatus tendon.

The correct answer is supraspinatus tendon mineralization (adult). Note the mineralization of the supraspinatus tendon insertion (arrows). The cranial location of mineralization beyond the margin of the biceps tendon and the lack of a clavicular remnant on a caudocranial projection (not provided) may confirm the mineralization is within the supraspinatus tendon.

The correct answer is supraspinatus tendon mineralization (adult). Note the mineralization of the supraspinatus tendon insertion (arrows). The cranial location of mineralization beyond the margin of the biceps tendon and the lack of a clavicular remnant on a caudocranial projection (not provided) may confirm the mineralization is within the supraspinatus tendon.

The correct answer is biceps tendon mineralization (adult). Mineralization of the biceps tendon (arrows) is superimposed on the intertubercular groove. Enthesophytosis of the supraglenoid tubercle (dashed arrow) can be seen.

The correct answer is biceps tendon mineralization (adult). Mineralization of the biceps tendon (arrows) is superimposed on the intertubercular groove. Enthesophytosis of the supraglenoid tubercle (dashed arrow) can be seen.

The correct answer is biceps tendon mineralization (adult). Mineralization of the biceps tendon (arrows) is superimposed on the intertubercular groove. Enthesophytosis of the supraglenoid tubercle (dashed arrow) can be seen.