@article{oai:ir.kagoshima-u.ac.jp:00016662,
 author = {Kamimura, Go and Ueda, Kazuhiro and Takeda, Aya and Miyata, Ryo and Aoki, Masaya and Nagata, Toshiyuki and Sato, Masami},
 issue = {11},
 journal = {Respirology Case Reports},
 month = {Oct},
 note = {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.

Go Kamimura, Kazuhiro Ueda, Aya Takeda, Ryo Miyata, Masaya Aoki, Toshiyuki Nagata, Masami Sato
A case of ectopic cervical thymoma with myasthenia gravis mimicking a parathyroid tumour
Respirology Case Reports. 2022;10:e01052.
https://doi.org/10.1002/rcr2.1052},
 title = {A case of ectopic cervical thymoma with myasthenia gravis mimicking a parathyroid tumour},
 volume = {10},
 year = {2022}
}