SPONTANEOUS RECTUS SHEATH HEMATOMA ASSOCIATED WITH LOW DOSE OF ACETYLSALICYLIC ACID Hematoma espontâneo do músculo reto abdominal associado à baixa dose de ácido acetilsalicílico

observed 23 cases (1.8%) of rectus sheath hematoma among 1257 patients evaluated by ultrasound for acute abdominal disorders. It is defined as spontaneous in patients without history of abdominal trauma. In these cases, anticoagulation therapy is considered an important predisposing factor. Many series have described the association between spontaneous rectus sheath hematoma and anticoagulant agents, especially warfarin and heparin