Open AccessA case of ectopic cervical thymoma with myasthenia gravis mimicking a parathyroid tumour
Author(s) -
Kamimura Go,
Ueda Kazuhiro,
Takeda Aya,
Miyata Ryo,
Aoki Masaya,
Nagata Toshiyuki,
Sato Masami
Publication year - 2022
Publication title -
respirology case reports
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 9
ISSN - 2051-3380
DOI - 10.1002/rcr2.1052
Subject(s) - thymoma , medicine , myasthenia gravis , scintigraphy , pathological , parathyroid adenoma , thymectomy , radiology , pathology , adenoma
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.