Pseudocyst of humerus

Case contributed by Dr Vishwanath Reddy

Presentation

Pain in the right shoulder for 6 months and has difficulty lifting the arm above the shoulder height. He gives a history of fall from a bike a few years back but does not remember if there was a shoulder injury at that time.

Patient Data

Age: 50 years
Gender: Male
X-ray

Increased lucency noted in the region of greater tubercle of humerus. It is termed as pseudocyst. It should not be mistaken for a lytic lesion.

Case Discussion

Increased lucency in the greater tubercle is due to decrease in the trabeculae which may occur secondary to rotator cuff disorders. This should not be mistaken for a lytic bone tumor. Additional radiographic views help in identifying that the lucency is confirming to the greater tubercle of humerus. Further evaluation can be done with the MRI if the radiographs are not confirmatory and as deemed by the clinical history.

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