The commonest presenting symptom in myelomatosis is pain in the back, which is frequently associated with vertebral collapse. Subsequently the patient may complain of sciatica or brachial neuralgia due to nerve root pressure. This may be a direct result of the collapse, or in some cases may be caused by an extradural plaque of myeloma cells. A less common but well-recognized presentation is a p...

introduction: catamenial pneumothorax is a rare disease caused by presence of endometrial tissues in chest cavity  showing itself with pneumothorax 24 to 48 hours after  the beginning of menstrual period .  a case of catamenial pneumothorax is presented here. case presentation: the case was a 17-year-old young woman admitted to hospital with symptoms and signs including chest pain, dyspnea, tac...