TITLE:
Inflammatory Pseudotumor of the Anterior Mediastinum Appearing as a Thymic Malignancy: Report of a Case
AUTHORS:
Go Kanazawa, Yasushi Sakamaki, Tomofumi Oda
KEYWORDS:
Inflammatory Pseudotumor, Mediastinum, Thymoma, Thymic Carcinoma, 18-Fluorine Fluorodeoxyglucose Positron Emission Tomography
JOURNAL NAME:
Case Reports in Clinical Medicine,
Vol.3 No.6,
June
16,
2014
ABSTRACT: We treated a patient with
inflammatory pseudotumor of the mediastinum that exhibited high uptake of
fluorodeoxyglucose on positron emission tomography. A 69-year-old male patient
was diagnosed with a mass measuring 70 mm in diameter in the anterior
mediastinum as revealed by computed tomography. The lesion showed strong uptake
of 18-fluorine fluorodeoxyglucose with a maximum standardized uptake value of
10.24 on positron emission tomography, which was suggestive of a thymic
malignancy. Complete resection of the mass was achieved, and the postoperative
pathological examination confirmed an inflammatory pseudotumor of the
mediastinum arising in a perithymic lymph node. Despite its rarity,
inflammatory pseudotumor should be taken into consideration when diagnosing a
mass lesion with characteristics suggestive of thymic neoplasm on
fluorodeoxyglucose positron emission tomography-computed tomography.