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Intern Med ; 62(7): 1055-1058, 2023 Apr 01.
Artigo em Inglês | MEDLINE | ID: mdl-36047125

RESUMO

A 73-year-old woman in complete remission from localized small-cell lung cancer associated with Lambert-Eaton myasthenic syndrome (LEMS) 22 years earlier was referred to our hospital and diagnosed with non-small-cell lung cancer. After three courses of pembrolizumab, an immune checkpoint inhibitor, the patient complained of muscle weakness, fatigue, ptosis, and dysarthria. The anti-voltage-gated calcium channel antibody level was elevated, and waxing was observed on a high-frequency repetitive stimulation test using an electromyogram. We diagnosed her with recurrence of LEMS as an immune-related adverse event (irAE) induced by pembrolizumab. After intravenous immunoglobulin therapy, the patient's symptoms improved, and she was discharged.


Assuntos
Carcinoma Pulmonar de Células não Pequenas , Síndrome Miastênica de Lambert-Eaton , Neoplasias Pulmonares , Carcinoma de Pequenas Células do Pulmão , Feminino , Humanos , Idoso , Neoplasias Pulmonares/complicações , Carcinoma Pulmonar de Células não Pequenas/tratamento farmacológico , Carcinoma Pulmonar de Células não Pequenas/complicações , Síndrome Miastênica de Lambert-Eaton/induzido quimicamente , Síndrome Miastênica de Lambert-Eaton/diagnóstico , Síndrome Miastênica de Lambert-Eaton/tratamento farmacológico , Carcinoma de Pequenas Células do Pulmão/complicações
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