Jin Wook, Ryu Kyung Nam, Park Yong Koo, Lee Weon Kyu, Ko Sung Hye, Yang Dal Mo
Department of Diagnostic Radiology, Gil Medical Center, Gachon Medical School, Inchoen 405-760, South Korea.
AJR Am J Roentgenol. 2005 Apr;184(4):1211-5. doi: 10.2214/ajr.184.4.01841211.
The purpose of this study was to describe the appearance of cysts in the posterosuperior portion of the humeral head on MR arthrography and to correlate the MRI findings with the gross and histologic findings in cadavers.
Cysts in the posterosuperior portion of the humeral head (the bare area) were located in the lateral humeral head just posterior to the greater tuberosity. These cysts were lined with collagen connective tissue and were connected to the joint spaces. We suggest that these pseudocysts in the posterosuperior portion of the humeral head may be a normal variant rather than being an abnormal change or vascular channel.
