scholarly journals A 77-Year-Old Man with a Pulse Granuloma of the Descending Colon Identified by Fluorodeoxyglucose-Positron Emission Tomography (FDG-PET) Imaging 19 Months Following Surgical Resection for Rectal Carcinoma

2021 ◽  
Vol 22 ◽  
Author(s):  
Yasuyuki Kobayashi ◽  
Yoshiro Otsuki ◽  
Hirotaka Yamamoto ◽  
Takashi Hamano ◽  
Seiji Inoue ◽  
...  
Keyword(s):  
Positron Emission Tomography ◽  
Surgical Resection ◽  
Rectal Carcinoma ◽  
Pet Imaging ◽  
Fdg Pet ◽  
Emission Tomography ◽  
Fluorodeoxyglucose Positron Emission Tomography ◽  
Positron Emission ◽  
Descending Colon ◽  
Fluorodeoxyglucose Positron Emission

Detection of Inflammatory Lesions by F-18 Fluorodeoxyglucose Positron Emission Tomography in Patients with Polymyositis and Dermatomyositis

2012 ◽  
Vol 39 (8) ◽  
pp. 1659-1665 ◽  
Author(s):  
TAKAYOSHI OWADA ◽  
REIKA MAEZAWA ◽  
KAZUHIRO KURASAWA ◽  
HARUTSUGU OKADA ◽  
SATOKO ARAI ◽  
...  
Keyword(s):  
Positron Emission Tomography ◽  
Pet Imaging ◽  
Fdg Pet ◽  
Inflammatory Myopathy ◽  
Emission Tomography ◽  
Fluorodeoxyglucose Positron Emission Tomography ◽  
Muscle Diseases ◽  
Fdg Uptake ◽  
Positron Emission ◽  
Fluorodeoxyglucose Positron Emission

Objective.To evaluate the usefulness of F-18 fluorodeoxyglucose positron emission tomography (FDG-PET) imaging in the management of patients with inflammatory myopathy. We examined whether FDG-PET scanning detects myositis or extramuscular lesions in patients with polymyositis (PM) and dermatomyositis (DM).Methods.FDG-PET imaging was performed in 24 patients with active inflammatory myopathy (PM, 11; DM, 13). The images were read by radiologists in a blinded manner. FDG uptake into muscles was judged positive when the intensity of muscles was higher than or equal to that of the liver. As controls, FDG imaging findings of patients with a lung mass and without muscle diseases were used. To investigate associations between FDG-PET findings and clinical/laboratory findings, the patients’ medical records were reviewed retrospectively.Results.Increased FDG uptake in muscles was found in 8 of 24 (33%) patients. In 67 of 69 (97%) controls without muscle diseases, no muscle FDG uptake was detected. The sensitivity of FDG-PET to detect myositis was lower than that of electromyogram (EMG), magnetic resonance imaging, and muscle biopsy. There were no significant differences in clinical manifestations between patients with and without increased FDG uptake in muscles, although patients with FDG muscle uptake had a tendency to have extended myositis with endomysial cell infiltration. FDG-PET detected neoplasms in patients with associated malignancy. FDG uptake in lungs was found in 7 of 18 patients with interstitial lung disease.Conclusion.FDG-PET imaging has limited usefulness for the evaluation of myositis in patients with PM/DM because of its low sensitivity, although it might be useful for detection of malignancy in these patients.

scholarly journals Contribution of 18-fluorodeoxyglucose positron emission tomography (FDG PET) imaging in the detection of underlying carcinoma in a woman with nonspecific mastitis

2018 ◽  
Vol 75 (11) ◽  
pp. 1118-1122
Author(s):  
Oguz Hancerliogulları ◽  
Semra Ince ◽  
Rahman Senocak ◽  
Seyfettin Ilgan ◽  
Nuri Arslan
Keyword(s):  
Positron Emission Tomography ◽  
Case Report ◽  
Pet Imaging ◽  
Fdg Pet ◽  
Inflammatory Process ◽  
Emission Tomography ◽  
Fluorodeoxyglucose Positron Emission Tomography ◽  
Positron Emission ◽  
Radiological Methods ◽  
Fluorodeoxyglucose Positron Emission

Introduction. Differentiation between a malignancy and inflammatory process is still a diagnostic challenge. Mammography (MG) and ultrasonography (US) have low sensitivity and specificity in dense breasts in order to detect malignancy. On the other hand, malignant mass lesions can also be masked on magnetic resonance imaging (MRI) by diffuse inflammatory process. 18-fluorodeoxyglucose positron emission tomography (FDG PET) imaging can be a promising alternative imaging method in the evaluation of suspicious breast masses, especially in patients with accompanying inflammatory breast diseases. Case report. We report an atypical case of a patient suspected for malignancy in right breast on physical examination and radiologic findings in favor of mastitis. Neither MG nor US revealed any mass lesion consistent with malignancy. Moreover, MRI findings were primarily considered as infectious or granulomatous mastitis. However, FDG PET determined the accurate borders of tumor and dissemination of breast cancer with superiority to other conventional radiological methods. Conclusion. This case report emphasizes the contribution of FDG PET imaging to other conventional radiological methods with regard to primary tumor diagnosis, determination of the biopsy site, and also staging the disease especially in patients with accompanying inflammatory breast disease.

Fluorine-18—labeled fluorodeoxyglucose—positron emission tomography studies of acute brainstem Lyme neutoborreliosis

2005 ◽  
Vol 102 (5) ◽  
pp. 927-929 ◽  
Author(s):  
Michail Plotkin ◽  
Hubertus Hautzel ◽  
Bernd Joachim Krause ◽  
Stephan Mohr ◽  
Karl Josef Langen ◽  
...  
Keyword(s):  
Positron Emission Tomography ◽  
Fdg Pet ◽  
Magnetic Resonance Images ◽  
Emission Tomography ◽  
Fluorodeoxyglucose Positron Emission Tomography ◽  
Brainstem Tumor ◽  
Content Type ◽  
Positron Emission ◽  
Fluorodeoxyglucose Positron Emission ◽  
Fine Print

✓ The authors report on a patient suffering from acute Lyme borreliosis who underwent two consecutive [18F]fluorodeoxyglucose—positron emission tomography (FDG-PET) studies demonstrating the course of the disease. The first FDG-PET study revealed markedly increased glucose metabolism in the brainstem, matching exactly the signal abnormalities exhibited on magnetic resonance images and indicating a brainstem tumor. A second PET scan demonstrated no abnormality in this region, thus reflecting clinical remission following antibiotic therapy. Data in the present case indicate that hypermetabolic findings on FDG-PET studies in the brainstem region should be regarded with caution and that neuroborreliosis must be considered as a possible differential diagnosis.

Fluorodeoxyglucose Positron Emission Tomography–Computed Tomography: A Novel Approach for the Diagnosis of Cholecystitis for Equivocal Diagnoses after Ultrasound Imaging

2012 ◽  
Vol 78 (10) ◽  
pp. 1109-1113
Author(s):  
Yosef Nasseri ◽  
Ariel J. Ourian ◽  
Alan Waxman ◽  
Alessandro D'Angolo ◽  
Louise E. Thomson ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Positron Emission Tomography ◽  
Fdg Pet ◽  
Emission Tomography ◽  
Fluorodeoxyglucose Positron Emission Tomography ◽  
Hida Scan ◽  
Positron Emission ◽  
Pet Ct ◽  
Fdg Pet Ct ◽  
Fluorodeoxyglucose Positron Emission

Although hepatobiliary iminodiacetic acid (HIDA) scan is often used when the diagnosis of cholecystitis remains questionable after ultrasound, it carries a high false-positive rate and has other limitations. Fluorodeoxyglucose positron emission tomography–computed tomography (18FDG PET-CT) has recently gained enthusiasm for its ability to detect infection and inflammation. In this study, we evaluate the accuracy of 18FDG PET-CT in diagnosing cholecystitis. Nineteen patients with suspected cholecystitis (Group S) underwent PET-CT and 10 had positive PET-CT findings. Of these 10, nine underwent cholecystectomies, and pathology confirmed cholecystitis in all nine. One patient was managed nonoperatively as a result of multiple comorbidities. Of the nine patients with negative PET-CT, six were managed nonoperatively, safely discharged, and had no readmissions at 3-month follow-up. The other three patients with negative PET-CT underwent cholecystectomies, and two showed no cholecystitis on pathology. The third had mild to moderate cholecystitis with focal mucosal erosion/ulceration without gallbladder wall thickening on pathology. 18FDG PET-CT detected gallbladder inflammation in all but one patient with pathology-proven cholecystitis with a sensitivity and specificity of 0.90 and 1.00, respectively. 18FDG-PET-CT appears to be a promising, rapid, direct, and accurate test in diagnosing cholecystitis and could replace HIDA scan in cases that remain equivocal after ultrasound.

18F-fluorodeoxyglucose positron emission tomography is useful for the diagnosis of intraocular sarcoidosis in patients with a normal CT scan

2019 ◽  
Vol 103 (11) ◽  
pp. 1650-1655 ◽  
Author(s):  
Pierre Chauvelot ◽  
Andrea Skanjeti ◽  
Yvan Jamilloux ◽  
Audrey de Parisot ◽  
Christiane Broussolle ◽  
...  
Keyword(s):  
Positron Emission Tomography ◽  
Ct Scan ◽  
Predictive Factors ◽  
Fdg Pet ◽  
Emission Tomography ◽  
Fluorodeoxyglucose Positron Emission Tomography ◽  
Positron Emission ◽  
Pet Ct ◽  
Fdg Pet Ct ◽  
Fluorodeoxyglucose Positron Emission

AimTo assess the usefulness of 18F-fluorodeoxyglucose positron emission tomography (18F-FDG PET/CT) and the predictive factors for the diagnosis of sarcoidosis in patients with uveitis who have normal thoracic tomography.MethodsWe retrospectively reviewed 67 consecutive patients with uveitis of unknown aetiology or a suspected sarcoidosis. All patients with normal thoracic tomography underwent an 18F-FDG PET/CT, which was blindly reinterpreted. We then assessed the proportion of positive 18F-FDG PET/CT and the impact on the final aetiology, using Abad’s criteria for the diagnosis of intraocular sarcoidosis.Results19 of the 67 patients (28.4%) had mediastinal hypermetabolic foci on their 18F-FDG PET/CT consistent with sarcoidosis. It identified a biopsy site in two cases, which were consistent with sarcoidosis. At the end of the study, six patients (10%) had a proven sarcoidosis, six patients (9%) were considered as having a presumed sarcoidosis and 18 patients (26.9%) as having indeterminate sarcoidosis. 18F-FDG PET/CT enabled the diagnosis of presumed sarcoidosis in these six patients. An older age at diagnosis (p=0.004) and the presence of synechiae (p=0.02) were significantly related to an abnormal 18F-FDG PET/CT, with a trend for an elevated ACE (p=0.0993). We established a nomogram to estimate the probability of having positive findings on the 18F-FDG PET/CT according to different predictive factors.Conclusion18F-FDG PET/CT enabled the diagnosis of intraocular sarcoidosis even in patients with a normal CT scan. Older age at diagnosis, presence of synechiae and elevated ACE are associated with positive findings on 18F-FDG PET/CT consistent with sarcoidosis.

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