Sunday, October 21, 2012

Myasthenia gravis developing in an HIV-negative patient with Kaposi's sarcoma.

Myasthenia gravis developing in an HIV-negative patient with Kaposi's sarcoma.

Sept 2012


Department of Neurosciences, Niguarda Ca' Granda Hospital, Piazza Ospedale Maggiore 3, 20162, Milan, Italy,


Myasthenia gravis is a disorder of neuromuscular transmission caused by autoimmune mechanisms. We reported a possible association between seropositive myasthenia gravis and Kaposi's sarcoma in a HIV-negative subject and the observed interactions between the treatment regimen for these two conditions. A 62-year-old man came to our attention for ocular myasthenia gravis. He suffered from a classic form of Kaposi's sarcoma since about 1 year. When myasthenic symptoms worsened, the patient was started on prednisone and azathioprine. The patient had a significant worsening of Kaposi's sarcoma, so prednisone and azathioprine were reduced and he was treated with vinblastine, with improvement both in dermatologic than in neurological symptomatology. We propose some considerations: the potential correlation betweenKaposi's sarcoma and myasthenia gravis through immunological mechanism; myasthenia gravis as a paraneoplastic manifestation of Kaposi's sarcoma, and the role of an antitumoral agent as a treatment for both the conditions.

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