a) Photograph of a patient with MG showing partial right ptosis. The left lid shows compensatory pseudolid retraction because of equal innervation of the levator palpabrae superioris (Herring’s law). (b) Post-Tensilon test: note the improvement in ptosis | Kurukumbi M, Weir RL, Kalyanam J, Nasim M, Jayam-Trouth A. Rare association of thymoma, myasthenia gravis and sarcoidosis: a case report. Journal of Medical Case Reports. 2008;2, article no. 245

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