Conversion from FDG-negative to -positive during follow-up in a rare case of pulmonary lymphoepithelioma-like carcinoma
| Autor: | Ching-Yuan Chen, Daniel H. Y. Shen, Cheng-Yi Cheng, Li-Fan Lin, Yueng-Long Cheng, Hong-Wei Gao |
|---|---|
| Rok vydání: | 2012 |
| Předmět: |
Lymphoepithelioma-like carcinoma
medicine.medical_specialty Lung Neoplasms Lymphoma Multimodal Imaging Fluorodeoxyglucose F18 Rare case medicine Carcinoma Humans Radiology Nuclear Medicine and imaging Avidity neoplasms Aged Lung medicine.diagnostic_test business.industry Fdg uptake General Medicine medicine.disease carbohydrates (lipids) medicine.anatomical_structure Positron emission tomography Positron-Emission Tomography Female Radiology business Tomography X-Ray Computed Follow-Up Studies |
| Zdroj: | Clinical nuclear medicine. 37(7) |
| ISSN: | 1536-0229 |
| Popis: | A female patient aged 75 years presented with an incidental pulmonary nodule without FDG uptake when undergoing FDG PET/CT. Without obtaining histologic diagnosis, the follow-up FDG PET/CT 2 years later demonstrated intense FDG avidity within previously FDG-negative tumor. After surgery, the pathologic diagnosis is pulmonary lymphoepithelioma-like carcinoma (LELC). LELCs are unique because of histologic similarities with undifferentiated nasopharyngeal lymphoepithelioma and with a better prognosis as compared with other lung malignancies. However, the expression of FDG uptake in LELC has never been discussed. Herein, we describe a pulmonary LELC manifesting as a slowly growing tumor displaying conversion from FDG-negative to -positive avidity. |
| Databáze: | OpenAIRE |
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