Catamenial pleural pain

A case of recurrent pleural pain without pneumothorax, thought to be due to pulmonary endometriosis, is presented. The pain was associated with the menstrual periods, remitted when the patient was sterilised, recurred when she was given oestrogens, and finally disappeared when the oestrogen was stopped. The presentation of pulmonary endometriosis, with pleural pain but no pneumothorax, should be added to those previously described in the literature.