the authors declare that there is no conflict of interests regarding the publication of this paper .
this is a case report , patient written consent has been obtained and will we available on request .
written informed consent was obtained from the patient for publication of this case report and accompanying images .
a copy of the written consent is available for review by the editor - in - chief of this journal on request .
asp and kh performed the documentation of the patient and follow up care , assisted in operation and draft writing .
 highlightshaemophilic pseudotumour was caused by repetitive bleeding.this is a bilateral iliopsoas pseudotumour with neurologic deficit and contracture.after excision , there was improvement in muscle power from score 2/5 to 4/5.recurrent bleeding will cause joint contractures chronic pain and nerve compression.surgery should be performed in major center by an integrated surgical team . 