Is 18F-FDG PET/CT Useful for Distinguishing Between Primary Thyroid Lymphoma and Chronic Thyroiditis?
| Autor: | Naobumi Tochigi, Masashi Nakadate, Tassei Nakagawa, Isao Umehara, Yoshiharu Ryu, Hitoshi Shibuya, Akihiro Ishii, Yoshio Suzuki, Katsuya Yoshida, Masayuki Koizumi |
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| Rok vydání: | 2013 |
| Předmět: |
Male
Thyroiditis endocrine system medicine.medical_specialty Lymphoma endocrine system diseases Thyroid Gland Diagnosis Differential Thyroid lymphoma Fluorodeoxyglucose F18 X ray computed medicine Humans Radiology Nuclear Medicine and imaging Thyroid Neoplasms Chronic thyroiditis Aged Aged 80 and over medicine.diagnostic_test business.industry Thyroid General Medicine Middle Aged medicine.disease carbohydrates (lipids) medicine.anatomical_structure Chronic disease ROC Curve Positron emission tomography Positron-Emission Tomography Chronic Disease Female Fdg pet ct Radiology Tomography Tomography X-Ray Computed business |
| Zdroj: | Clinical Nuclear Medicine. 38:709-714 |
| ISSN: | 0363-9762 |
| DOI: | 10.1097/rlu.0b013e31829b2686 |
| Popis: | This study aims to investigate the usefulness of (18)F-FDG PET/CT for distinguishing between primary thyroid lymphoma (PTL) and chronic thyroiditis.We retrospectively reviewed the data of 196 patients with diffuse (18)F-FDG uptake of the thyroid gland and enrolled patients who were diagnosed as having PTL or chronic thyroiditis based on the medical records, pathological findings, and laboratory data. The enrolled patients comprised 10 PTL patients (M/F = 4:6) and 51 chronic thyroiditis patients (M/F = 8:43). Images had been acquired on a PET/CT scanner at 100 minutes after intravenous injection of (18)F-FDG.The PTL group consisted of 7 patients with diffuse large B-cell lymphoma (DLBCL) and 3 with mucosa-associated lymphoid tissue (MALT) lymphoma. The maximum standardized uptake value (SUV(max)) was significantly higher in the PTL group than that in the chronic thyroiditis group (25.3 ± 8.0 and 7.4 ± 3.2, P0.001). On the other hand, the CT density (Hounsfield unit: HU) was significantly lower in the PTL group than that in the chronic thyroiditis group (46.1 ± 7.0 HU and 62.1 ± 6.9 HU, P0.001). Within the PTL group, the SUV(max) was significantly higher in the cases of DLBCL than in those of MALT lymphoma (29.0 ± 6.4 and 16.7 ± 2.3, P = 0.017).The SUV(max) was significantly higher and the CT density was significantly lower in PTL as compared with those in chronic thyroiditis. Thus, (18)F-FDG PET/CT may be useful for distinguishing between PTL and chronic thyroiditis. |
| Databáze: | OpenAIRE |
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