Gastrointestinal stromal tumors(GISTs) are mesenchymal tumors of the gastrointestinal tract that are most commonly found in the stomach. Although GISTs can spread to the liver and peritoneum, metastasis to the skeleta...Gastrointestinal stromal tumors(GISTs) are mesenchymal tumors of the gastrointestinal tract that are most commonly found in the stomach. Although GISTs can spread to the liver and peritoneum, metastasis to the skeletal muscle is very rare and only four cases have previously been reported. These cases involved concurrent skeletal metastases of primary GISTs or liver metastases. Here, we report the first case of a distant recurrence in the brachialis muscle after complete remission of an extra-luminal gastric GIST following a wedge resection of the stomach, omental excision, and adjuvant imatinib therapy for one year. Ten months after therapy completion, the patient presented with swelling and tenderness in the left arm. Magnetic resonance imaging revealed a large mass in the brachialis muscle, which showed positivity for c-kit and CD34 upon pathologic examination. This is the first reported case of a solitary distant recurrence of a GIST in the muscle after complete remission had been achieved.展开更多
文摘Gastrointestinal stromal tumors(GISTs) are mesenchymal tumors of the gastrointestinal tract that are most commonly found in the stomach. Although GISTs can spread to the liver and peritoneum, metastasis to the skeletal muscle is very rare and only four cases have previously been reported. These cases involved concurrent skeletal metastases of primary GISTs or liver metastases. Here, we report the first case of a distant recurrence in the brachialis muscle after complete remission of an extra-luminal gastric GIST following a wedge resection of the stomach, omental excision, and adjuvant imatinib therapy for one year. Ten months after therapy completion, the patient presented with swelling and tenderness in the left arm. Magnetic resonance imaging revealed a large mass in the brachialis muscle, which showed positivity for c-kit and CD34 upon pathologic examination. This is the first reported case of a solitary distant recurrence of a GIST in the muscle after complete remission had been achieved.
文摘目的评价利妥昔单抗治疗重症肌无力(MG)的有效性和安全性。方法回顾性收集2018年2月至2019年7月北京医院神经内科收治的MG患者21例,所有患者血清抗乙酰胆碱受体(acetylcholine receptor,AChR)抗体或抗肌肉特异性酪氨酸激酶(muscle specific kinase,MuSK)抗体阳性。给予患者4次500mg利妥昔单抗治疗。分析患者治疗前后许氏评分,血CD19阳性B淋巴细胞、CD20阳性B淋巴细胞百分数以及相关抗体变化情况,同时观察利妥昔单抗的不良反应。结果共20例患者在使用4次500mg利妥昔单抗治疗后复查许氏评分,治疗前基线许氏评分为7~44分,平均(18.5±10.56)分,治疗后许氏评分为0~25分,平均(10.45±7.70)分,经利妥昔单抗治疗后患者许氏评分减低为6.5(3.25,12.75)分〔Md(P25,P75)〕,差异有统计学意义(P<0.01)。共16例患者于第1次、第2次、第3次及第4次利妥昔单抗用药后复查许氏评分,与用药前比较许氏评分降低分别为2(0,7)分〔Md(P25,P75)〕以及(6.12±4.54)、(6.18±5.98)、(8.12±5.80)分,与治疗前相比差异均有统计学意义(均P<0.01)。患者外周血CD19、CD20阳性B淋巴细胞计数于第一次用药后分别下降96%、97%。抗AChR抗体阳性患者共19例,用药后不同时间复查抗体水平14次,共发现2例患者抗体滴度降低。共9例患者出现不良反应,均为良性不良反应。结论4次500mg利妥昔单抗治疗MG显示出良好治疗效果,且安全性高,耐受性好。
