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    Diagnosis of Pulmonary Hydatid Cyst by Bronchoscopy
    (Lippincott Williams and Wilkins, 2015) Yasar, Z.; Acat, M.; Turgut, E.; Onaran, H.; Dincer, H.E.; Arda, N.; Çetinkaya, E.
    Hydatid cyst is a parasitic infestation caused by Echinococcus granulosus. Lungs are the second most common site of involvement after liver. The diagnosis of complicated pulmonary hydatid cysts may not be easy because hydatid cyst disease mimics tuberculosis, lung cancer, empyema, or abscess. Fiberoptic bronchoscopy can be a valuable tool in the diagnosis of the infestation by visualization of hydatid cyst membrane. Here, we report the case of a 33-year-old woman who presented with hemoptysis and chest discomfort and was diagnosed with a hydatid cyst by fiberoptic bronchoscopy. © 2015 Wolters Kluwer Health, Inc. All rights reserved.
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    False-positive 18-fluorodeoxyglucose positron emission tomography–computed tomography (FDG PET/CT) scans mimicking malignancies
    (Medical Association of Zenica-Doboj Canton, 2015) Yasar, Z.; Acat, M.; Onaran, H.; Ozgül, A.; Dincer, E.H.; Cetinkaya, E.; Korkmaz, N.A.
    Aim 18-Fluorodeoxyglucose (FDG) positron emission tomography–computed tomography (PET/CT) is an imaging modality that is often used to help differentiate benign from malignant pulmonary lesions and it has been shown to be more efficacious than conventional chest computed tomography (CT). However, some benign lesions may also show increased metabolic activity which can lead to false-positive PET findings. We aim to illustrate false positive findings of PET scan that simulate lung cancer in a variety of diseases. Methods Patients referred to Yedikule Chest Diseases and Surgery Teaching and Research Hospital with increased FDG uptake for which histological results were available over a 2-year period (2013-2014) were reviewed. Seven patients with false-positive PET/CT findings were reported in this study. Results The majority of lesions showing increased metabolic activity were due to malignant diseases. However, increased 18 F-FDG uptake was also seen in benign lesions such as active pulmonary inflammation or infection, granulomatous processes and fibrotic lesions. Conclusion The integration of clinical history, morphologic findings of lesions on the CT component, and metabolic activities of PET/CT scan can help reduce false interpretations. Interventional procedures may be needed for tissue confirmation for differential diagnosis. © 2015 Medical Association of Zenica-Doboj Canton. All rights reserved.