scholarly journals Difficult endoscopic resection of a giant esophageal fibrovascular polyp: case report and literature review

2021 ◽  
Vol 49 (8) ◽  
pp. 030006052110398
Author(s):  
Dan Nie ◽  
Ye Zong ◽  
Jielin Li
Keyword(s):  
Endoscopic Resection ◽  
Benign Tumor ◽  
Esophageal Neoplasms ◽  
Needle Aspiration ◽  
Emission Computed Tomography ◽  
Fibrovascular Polyp ◽  
Positron Emission ◽  
Pet Ct ◽  
Positron Emission Computed Tomography ◽  
Pass Through

Esophageal fibrovascular polyp is rare in esophageal neoplasms and usually very large. Here, we present a case of giant esophageal fibrovascular polyp. The patient had dysphagia and choking sensation at presentation. She underwent positron emission-computed tomography (PET-CT), endoscopy, endoscopic ultrasonography, and fine needle aspiration. She was clinically diagnosed as having an esophageal benign tumor and underwent endoscopic submucosal dissection. The polyp was successfully resected; however, the process was very difficult, and the lesion was too large to pass through the upper esophagus. Finally, we removed the lesion surgically. Fibrovascular polyps are often large, and if endoscopic resection is chosen, it is necessary to consider the difficulties that may be encountered during resection, before initiating treatment.

scholarly journals F-18 fluorodeoxyglucose positron emission computed tomography in the diagnosis of pleural metastases from breast carcinoma

2020 ◽  
Vol 7 (3) ◽  
pp. 764
Author(s):  
Murat Saricam
Keyword(s):  
Breast Cancer ◽  
Computed Tomography ◽  
Pleural Effusion ◽  
Emission Computed Tomography ◽  
Pleural Effusions ◽  
Fdg Uptake ◽  
Positron Emission ◽  
Pet Ct ◽  
Positron Emission Computed Tomography ◽  
Pleural Metastases

Background: This study aimed to investigate the feasibility of F-18 fluorodeoxyglucose (FDG) positron emission computed tomography (PET/CT) in identifying the pleural invasion of metastatic breast cancers.Methods: A retrospective study was conducted to include 75 patients with untreated breast cancer who had undergone thoracoscopy to drain pleural effusions and to perform pleural biopsies. Whole group of patients were evaluated in terms of age, type of primary breast cancer, macroscopic appearance of pleura during thoracoscopy, maximum standardized FDG uptake value (SUV) reported by PET/CT scan in addition to presence of malignancy detected in pleura and/or pleural effusion.Results: All of 75 patients were female and mean age was 56.12±11.70. Metastatic disease was diagnosed in the pleura of 40 (53.3%) and in the pleural effusion of 43 (57.3%) patients. The sensitivity and specificity of PET/CT in detecting pleural metastases of breast carcinoma was calculated as 88.2% and 96.2% whereas PET/CT demonstrated sensitivity of 91.9% and specificity of 91.3% in identifying malignant pleural effusion. Cut-off values of FDG uptake were 4.25 for pleural metastases and 3.85 for malignant pleural effusions. PET/CT also indicated a false negative rate of 12.5%, a false positive rate of 16.28% and an overall accuracy rate of 85.33% in the diagnosis of pleural metastasis of breast carcinoma.Conclusions: PET/CT reporting an FDG uptake over 4 in the pleura or pleural effusion is beneficial in managing the patients with the suspicion of pleural metastases from breast cancer.

Malignancy in non-HIV infected patients with cryptococcal meningitis: a retrospective study

2020 ◽  
Author(s):  
Xiaofeng Xu ◽  
Liping Cao ◽  
Yijie Wang ◽  
Jia Liu ◽  
Qing Dong ◽  
...  
Keyword(s):  
Cryptococcal Meningitis ◽  
Clinical Characteristics ◽  
Emission Computed Tomography ◽  
Positron Emission ◽  
Therapeutic Outcomes ◽  
Solid Malignancies ◽  
Pet Ct ◽  
Immunodeficiency Virus ◽  
Positron Emission Computed Tomography ◽  
Increase Rate

Abstract Background: Cryptococcal meningitis (CM) was found to be coexist with malignancy in non-human immunodeficiency virus (HIV) infected patients. The purpose of this study was to evaluate the clinical characteristics and therapeutic outcomes of CM in non-HIV infected patients with malignancy.Methods: A total of 320 CM patients were enrolled for analysis from January 2013-May 2019. One hundred and four patients underwent positron emission computed tomography (PET-CT) examination. The demographics, clinical characteristics, microbiological, radiological, therapeutic outcomes were analyzed in CM patients with and without malignancy.Results: Twelve patients with malignancy were found, of which 7 malignancy before CM (MBC), 5 malignancy after CM (MAC). CM patients with malignancy were older than non-malignancy ones. The prognosis of MBC patients was comparable to that of non-malignancy patients, but was extremely poor in MAC patients. Four out of 5 CM patients, who was suggested diagnosis as malignancy by PET-CT, were finally confirmed.Conclusions: This study found an increase rate of solid malignancies in CM patients. Screening malignancy in older CM patients was very important because it is closely related to prognosis and might affect treatment strategy. PET-CT might be a useful tool for early malignancy screening in CM.

scholarly journals ANALYSIS OF THE DIAGNOSTIC VALUE OF MAGNETIC RESONANCE COMPUTER TOMOGRAPHY AND POSITRON EMISSION COMPUTER TOMOGRAPHY WITH 18F-FDG IN IDENTIFICATION OF SPINAL AND PELVIC BONE METASTASES

2021 ◽  
Vol 20 (5) ◽  
pp. 100-107
Author(s):  
A. V. Laryukov ◽  
R. Sh. Hasanov ◽  
Z. A. Afanasyeva ◽  
E. K. Laryukova
Keyword(s):  
Magnetic Resonance ◽  
Bone Metastases ◽  
Diagnostic Value ◽  
Diagnostic Techniques ◽  
Pelvic Bone ◽  
Emission Computed Tomography ◽  
Resonance Imaging ◽  
Positron Emission ◽  
Pet Ct ◽  
Positron Emission Computed Tomography

Background. The treatment outcomes for non-small cell lung cancer (NSCLC) depend on the tumor stage and treatment strategy. The imaging techniques play a significant role in the diagnosis, staging and choice of appropriate treatment for NSCLC.Purpose of the study: сomparison of the diagnostic capabilities of magnetic resonance imaging (MR) and positron emission computed tomography to select the optimal approaches to early detection of spinal and pelvic bone metastases.Material and Methods. The treatment outcomes were analyzed in 71 patients with NSCLC. Spinal and pelvic bone metastases were detected in 24 patients using magnetic resonance imaging (MRI) and positron emission computed tomography (PET/CT). Multiple bone lesions were the most common. A total of 69 metastatic lesions were identified. To compare the capabilities of diagnostic techniques, all patients underwent PET/CT with 18F-FDG, and MRI of the spine and pelvic bones using diffused-weighted images (DWI). Statistical data processing included the calculation of the sensitivity, specificity and diagnostic accuracy of the above techniques.Conclusion. The comparative analysis of the capabilities of modern high-tech diagnostic techniques (PET/CT with 18F-FDG and MRI of the spine and pelvic bones with DWI) in early detection of bone metastases in patients with NSCLC, PET/CT with 18F-FDG showed the greatest diagnostic value. However, taking into account the high sensitivity and specificity of MRI with DVI in detection of bone metastases and limited availability of PET/CT for patients, MRI with DVI is recommended to exclude bone metastases. 

scholarly journals Malignancy in Non-HIV Infected Patients with Cryptococcal Meningitis: A Retrospective Study

2020 ◽  
Author(s):  
Xiaofeng Xu ◽  
Liping Cao ◽  
Yijie Wang ◽  
Jia Liu ◽  
Qing Dong ◽  
...  
Keyword(s):  
Cryptococcal Meningitis ◽  
Clinical Characteristics ◽  
Emission Computed Tomography ◽  
Positron Emission ◽  
Therapeutic Outcomes ◽  
Solid Malignancies ◽  
Pet Ct ◽  
Immunodeficiency Virus ◽  
Positron Emission Computed Tomography ◽  
Increase Rate

Abstract Background: Cryptococcal meningitis (CM) was found to be coexist with malignancy in non-human immunodeficiency virus (HIV) infected patients. The purpose of this study was to evaluate the clinical characteristics and therapeutic outcomes of CM in non-HIV infected patients with malignancy.Methods: A total of 320 CM patients were enrolled for analysis from January 2013-May 2019. One hundred and four patients underwent positron emission computed tomography (PET-CT) examination. The demographics, clinical characteristics, microbiological, radiological, therapeutic outcomes were analyzed in CM patients with and without malignancy.Results: Twelve patients with malignancy were found, of which 7 malignancy before CM (MBC), 5 malignancy after CM (MAC). CM patients with malignancy were older than non-malignancy ones. The prognosis of MBC patients was comparable to that of non-malignancy patients, but was extremely poor in MAC patients. Four out of 5 CM patients, who was suggested diagnosis as malignancy by PET-CT, were finally confirmed.Conclusions: This study found an increase rate of solid malignancies in CM patients. Screening malignancy in older CM patients was very important because it is closely related to prognosis and might affect treatment strategy. PET-CT might be a useful tool for early malignancy screening in CM.

scholarly journals A Nordic survey of CT doses in hybrid PET/CT and SPECT/CT examinations

2019 ◽  
Vol 6 (1) ◽  
Author(s):  
Natalie A. Bebbington ◽  
Bryan T. Haddock ◽  
Henrik Bertilsson ◽  
Eero Hippeläinen ◽  
Ellen M. Husby ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Single Photon ◽  
Photon Emission ◽  
Emission Computed Tomography ◽  
Single Photon Emission ◽  
Positron Emission ◽  
Pet Ct ◽  
Clinical Purpose ◽  
Single Photon Emission Computed ◽  
Photon Emission Computed Tomography

Abstract Background Computed tomography (CT) scans are routinely performed in positron emission tomography (PET) and single photon emission computed tomography (SPECT) examinations globally, yet few surveys have been conducted to gather national diagnostic reference level (NDRL) data for CT radiation doses in positron emission tomography/computed tomography (PET/CT) and single photon emission computed tomography/computed tomography (SPECT/CT). In this first Nordic-wide study of CT doses in hybrid imaging, Nordic NDRL CT doses are suggested for PET/CT and SPECT/CT examinations specific to the clinical purpose of CT, and the scope for optimisation is evaluated. Data on hybrid imaging CT exposures and clinical purpose of CT were gathered for 5 PET/CT and 8 SPECT/CT examinations via designed booklet. For each included dataset for a given facility and scanner type, the computed tomography dose index by volume (CTDIvol) and dose length product (DLP) was interpolated for a 75-kg person (referred to as CTDIvol,75kg and DLP75kg). Suggested NDRL (75th percentile) and achievable doses (50th percentile) were determined for CTDIvol,75kg and DLP75kg according to clinical purpose of CT. Differences in maximum and minimum doses (derived for a 75-kg patient) between facilities were also calculated for each examination and clinical purpose. Results Data were processed from 83 scanners from 43 facilities. Data were sufficient to suggest Nordic NDRL CT doses for the following: PET/CT oncology (localisation/characterisation, 15 systems); infection/inflammation (localisation/characterisation, 13 systems); brain (attenuation correction (AC) only, 11 systems); cardiac PET/CT and SPECT/CT (AC only, 30 systems); SPECT/CT lung (localisation/characterisation, 12 systems); bone (localisation/characterisation, 30 systems); and parathyroid (localisation/characterisation, 13 systems). Great variations in dose were seen for all aforementioned examinations. Greatest differences in DLP75kg for each examination, specific to clinical purpose, were as follows: SPECT/CT lung AC only (27.4); PET/CT and SPECT/CT cardiac AC only (19.6); infection/inflammation AC only (18.1); PET/CT brain localisation/characterisation (16.8); SPECT/CT bone localisation/characterisation (10.0); PET/CT oncology AC only (9.0); and SPECT/CT parathyroid localisation/characterisation (7.8). Conclusions Suggested Nordic NDRL CT doses are presented according to clinical purpose of CT for PET/CT oncology, infection/inflammation, brain, PET/CT and SPECT/CT cardiac, and SPECT/CT lung, bone, and parathyroid. The large variation in doses suggests great scope for optimisation in all 8 examinations.

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