一、临床资料:患者女性,15岁,学生。因舌肿、舌底粘膜溃烂五个月而就诊。患者在五个月前,于左舌底粘膜处发生糜烂,范围约为1×1 cm,无痛,逐渐长大,有时仅有不适感。曾在当地某医院进行活检,报告为舌粘膜下炎症,后转我院治疗。患者既往健康,自幼有轻度痴呆。母亲曾有癫痫史,父兄健在。 First, clinical data: Female patients, 15 years old, students. He was diagnosed with tongue swelling and ulceration of the mucosa of the tongue for five months. Five months earlier, the patient developed erosions at the base of the left tongue, which ranged from approximately 1 x 1 cm, painless, gradually growing up, sometimes with only discomfort. He had a biopsy at a local hospital and reported sublingual inflammation, and he was transferred to our hospital for treatment. The patient was previously healthy and had mild dementia since childhood. Her mother had a history of epilepsy and her father and brother were alive.