Díaz Alcázar, María Del MarRuiz-Rodríguez, Antonio JoséMartín-Lagos Maldonado, Alicia2023-02-092023-02-0920201130-0108http://hdl.handle.net/10668/15678We present the case of a 50-year-old male diagnosed with myasthenia gravis, secondary to thymoma or Lambert-Eaton syndrome during the study of repeated vomiting. Gastrointestinal symptoms persisted despite the treatment of the thymoma. He suffered from sigma volvulus that required sigmoidectomy 9 years after diagnosis. Neuromuscular junction disorders are not characterized by gastrointestinal involvement, as in our case. They have previously sporadically been related to intestinal motility dysfunction.enHumansLambert-Eaton Myasthenic SyndromeMaleMiddle AgedMyasthenia Gravisresearch article32496121open access10.17235/reed.2020.6846/2019https://doi.org/10.17235/reed.2020.6846/2019