临床资料患者，女，8岁，于1997年6月间自8时因左下第一乳磨牙剧痛（龋齿），目服去痛片1片，并置入龋齿内！／4片，疼痛稍微缓解，但于当日下午4时腹部阵发性绞痛，急诊入我院职工门诊。查体：体温、脉搏正常，仅脐局及下腹部散在大小木等紫癜，压之不退色，血常规及血小板均? Clinical data Patient, female, 8 years old, from June 8, 1997 due to the first left lower first molars severe pain (decayed teeth), head to a painkiller tablets, and placed in dental caries! / 4, slightly relieved pain, but at 4 o’clock on the afternoon of the abdomen, paroxysmal colic, emergency clinic into our hospital staff. Physical examination: body temperature, normal pulse, only the umbilical cord and the lower abdomen scattered in the size of wood and other purpura, the pressure does not fade, blood and platelets are?