Ectopic cystic thymoma associated with Raynaud's phenomenon.
Mediastinal cystic tumors are well-marginated round lesions that comprise 12% to 18% of all mediastinal masses. These lesions include a variety of diseases with overlapping radiologic appearances and variable prognoses. Pathological examinations are almost always required for differential diagnosis. We encountered a case of anterior mediastinal tumor discovered in the process of investigation of Raynaud's phenomenon. Taking into account the tumor location, a pericardial cyst was initially suspected. However, the tumor was surgically resected and histopathological examinations demonstrated thymus-like tissue in the cyst walls. Raynaud's phenomenon greatly improved after surgery. These findings suggested that cystic thymoma originated from ectopic thymic tissue and is accompanied by paraneoplastic syndrome.
Nomura
Tetsuya
T
Department of Cardiovascular Medicine, Kyoto Prefectural University School of Medicine, Kyoto, Japan.
Kawasaki
Tatsuya
T
Tanabe
Takuji
T
Azuma
Akihiro
A
Matsubara
Hiroaki
H
D000328:Adult; D006801:Humans; D008297:Male; D011928:Raynaud Disease / Q000150:complications*; D013945:Thymoma / Q000150:complications* / Q000000981:diagnostic imaging / Q000473:pathology; D013953:Thymus Neoplasms / Q000150:complications* / Q000000981:diagnostic imaging / Q000473:pathology; D014057:Tomography, X-Ray Computed