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November 25, 1974

Intradiaphragmatic Cyst: A Diagnostic Challenge

Author Affiliations

From the Albert Einstein Medical Center, Northern Division, Philadelphia.

JAMA. 1974;230(8):1176. doi:10.1001/jama.1974.03240080058034

CYSTS of the diaphragm have been classified by previous investigators as (1) mesothelial, (2) bronchogenic, and (3) fibrous.1-4 Such lesions are rare and provide a difficult challenge in differential diagnosis.

In this article, we describe a 26-year-old man with mesothelial cyst of the diaphragm, with chronic hemorrhage and inflammation, not associated with trauma. To our knowledge, a few cases of mesothelial cyst of the diaphragm with clear fluid have been reported. Only one description of a case of cystic hematoma of the diaphragm exists and this was defined primarily as hematoma due to trauma with degeneration.5

Report of a Case  A 26-year-old man complained of pain in the right side of the abdomen and thorax with radiation to the right shoulder, which began approximately two months before admission. This pain was described as dull aching, with acute exacerbations. There were no associated symptoms, such as nausea, vomiting, or