Delayed lung expansion after decortication in a case of trapped lung resulting from catamenial haemothorax.

Herein, we report the case of a 35-year-old female with a trapped right lung secondary to catamenial haemothorax. Following surgical decortication, re-expansion of the lung was not observed until postoperative day 81. This delay represents a heretofore unencountered complication that should be considered in the surgical management of catamenial haemothorax due to thoracic endometriosis syndrome.