{Reference Type}: Case Reports
{Title}: A case of ectopic cervical thymoma with myasthenia gravis mimicking a parathyroid tumour.
{Author}: Kamimura G;Ueda K;Takeda A;Miyata R;Aoki M;Nagata T;Sato M;
{Journal}: Respirol Case Rep
{Volume}: 10
{Issue}: 11
{Year}: Nov 2022
暂无{DOI}: 10.1002/rcr2.1052
{Abstract}: Reports of cervical thymoma with myasthenia gravis are rare. In addition, 99mTc-MIBI (methoxyisobutylisonitrile:sestamibi) scintigraphy is a useful diagnostic examination for enlarged parathyroid tumours; however, there are a few reports of its accumulation in thymoma. Among them, there are no reports of cervical thymomas with 99mTc-MIBI accumulation complicated by myasthenia gravis. In this study, we performed surgery on a patient with preoperative myasthenic crisis accompanied by a cervical thymoma and a parathyroid tumour. Preoperatively, the cervical mass was determined to be a parathyroid tumour and was complicated by myasthenia gravis without thymic tumour. However, a pathological examination revealed that the cervical tumour with 99mTc-MIBI accumulation was a Type B2 thymoma, and a parathyroid tumour was identified in the vicinity. We report a very rare case in which symptoms improved with surgery.