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2018•Acta chirurgica BelgicaRequires access

Myasthenia gravis appearing after thymectomy heralding recurrent thymoma

Paul A. J. Beckers, Rudy Mercelis, Stijn R.G. Heyman, Lies Verheuen, Patrick Lauwers, Jeroen M. Hendriks, Paul E. Van Schil

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Abstract

INTRODUCTION: Thirty to fifty percent of thymoma patients develop myasthenia gravis (MG). In 1.5-28% of cases, MG appears many years after removal of a thymoma. PATIENTS AND METHODS: We present a case report of a 72-year-old female who presented with MG four months after total thymectomy. RESULTS: A 72-year-old female patient presents with MG four months after total thymectomy. Imaging revealed a PET-positive nodule anterior to the superior vena cava. By median sternotomy, the nodule was removed at our hospital. Pathology confirmed a recurrent B2/B3 thymoma with R0 resection. No adjuvant therapy was given. Large population studies show the appearance of new-onset MG associated with recurrent thymoma in 3% of cases. CONCLUSIONS: New-onset MG postthymectomy heralds recurrent disease in 3% of cases. Thorough screening is needed in such patients.

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INTRODUCTION: Thirty to fifty percent of thymoma patients develop myasthenia gravis (MG). In 1.5-28% of cases, MG appears many years after removal of a thymoma. PATIENTS AND METHODS: We present a case report of a 72-year-old female who presented with MG four months after total thymectomy. RESULTS: A 72-year-old female patient presents with MG four months after total thymectomy. Imaging revealed a PET-positive nodule anterior to the superior vena cava. By median sternotomy, the nodule was removed at our hospital. Pathology confirmed a recurrent B2/B3 thymoma with R0 resection. No adjuvant therapy was given. Large population studies show the appearance of new-onset MG associated with recurrent thymoma in 3% of cases. CONCLUSIONS: New-onset MG postthymectomy heralds recurrent disease in 3% of cases. Thorough screening is needed in such patients.

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Available abstract

INTRODUCTION: Thirty to fifty percent of thymoma patients develop myasthenia gravis (MG). In 1.5-28% of cases, MG appears many years after removal of a thymoma. PATIENTS AND METHODS: We present a case report of a 72-year-old female who presented with MG four months after total thymectomy. RESULTS: A 72-year-old female patient presents with MG four months after total thymectomy. Imaging revealed a PET-positive nodule anterior to the superior vena cava. By median sternotomy, the nodule was removed at our hospital. Pathology confirmed a recurrent B2/B3 thymoma with R0 resection. No adjuvant therapy was given. Large population studies show the appearance of new-onset MG associated with recurrent thymoma in 3% of cases. CONCLUSIONS: New-onset MG postthymectomy heralds recurrent disease in 3% of cases. Thorough screening is needed in such patients.

Key concepts: Medicine, Myasthenia gravis, Thymectomy, Thymoma, Thymus Neoplasm, Surgery, Immunology

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