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Parotid Incidentaloma Identified by Positron Emission/Computed Tomography: When to Consider Diagnoses Other than Warthin Tumor

Introduction Parotid gland incidentalomas (PGIs) are unexpected hypermetabolic foci in the parotid region that can be found when scanning with whole-body positron emission/computed tomography (PET/CT). These deposits are most commonly due to benign lesions such as Warthin tumor. Objective The aim of...

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Autores principales: Bothe, Carolina, Fernandez, Alejandro, Garcia, Jacinto, Lopez, Montserrat, León, Xavier, Quer, Miquel, Lop, Joan
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Thieme Publicações Ltda 2014
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4399184/
https://www.ncbi.nlm.nih.gov/pubmed/25992164
http://dx.doi.org/10.1055/s-0034-1397334
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author Bothe, Carolina
Fernandez, Alejandro
Garcia, Jacinto
Lopez, Montserrat
León, Xavier
Quer, Miquel
Lop, Joan
author_facet Bothe, Carolina
Fernandez, Alejandro
Garcia, Jacinto
Lopez, Montserrat
León, Xavier
Quer, Miquel
Lop, Joan
author_sort Bothe, Carolina
collection PubMed
description Introduction Parotid gland incidentalomas (PGIs) are unexpected hypermetabolic foci in the parotid region that can be found when scanning with whole-body positron emission/computed tomography (PET/CT). These deposits are most commonly due to benign lesions such as Warthin tumor. Objective The aim of this study was to determine the prevalence of PGIs identified in PET/CT scans and to assess the role of smoking in their etiology. Methods We retrospectively reviewed all PET/CT scans performed at our center in search of PGIs and identified smoking status and standardized uptake value (SUVmax) in each case. We also analyzed the database of parotidectomies performed in our department in the previous 10 years and focused on the pathologic diagnosis and the presence or absence of smoking in each case. Results Sixteen cases of PGIs were found in 4,250 PET/CT scans, accounting for 0.4%. The average SUVmax was 6.5 (range 2.8 to 16). Cytology was performed in five patients; it was benign in four cases and inconclusive in one case. Thirteen patients had a history of smoking. Of the parotidectomies performed in our center with a diagnosis of Warthin tumor, we identified a history of smoking in 93.8% of those patients. Conclusions The prevalence of PGIs on PET/CT was similar to that reported by other authors. Warthin tumor is frequently diagnosed among PGIs on PET/CT, and it has a strong relationship with smoking. We suggest that a diagnosis other than Warthin tumor should be considered for PGIs in nonsmokers.
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spelling pubmed-43991842015-05-19 Parotid Incidentaloma Identified by Positron Emission/Computed Tomography: When to Consider Diagnoses Other than Warthin Tumor Bothe, Carolina Fernandez, Alejandro Garcia, Jacinto Lopez, Montserrat León, Xavier Quer, Miquel Lop, Joan Int Arch Otorhinolaryngol Article Introduction Parotid gland incidentalomas (PGIs) are unexpected hypermetabolic foci in the parotid region that can be found when scanning with whole-body positron emission/computed tomography (PET/CT). These deposits are most commonly due to benign lesions such as Warthin tumor. Objective The aim of this study was to determine the prevalence of PGIs identified in PET/CT scans and to assess the role of smoking in their etiology. Methods We retrospectively reviewed all PET/CT scans performed at our center in search of PGIs and identified smoking status and standardized uptake value (SUVmax) in each case. We also analyzed the database of parotidectomies performed in our department in the previous 10 years and focused on the pathologic diagnosis and the presence or absence of smoking in each case. Results Sixteen cases of PGIs were found in 4,250 PET/CT scans, accounting for 0.4%. The average SUVmax was 6.5 (range 2.8 to 16). Cytology was performed in five patients; it was benign in four cases and inconclusive in one case. Thirteen patients had a history of smoking. Of the parotidectomies performed in our center with a diagnosis of Warthin tumor, we identified a history of smoking in 93.8% of those patients. Conclusions The prevalence of PGIs on PET/CT was similar to that reported by other authors. Warthin tumor is frequently diagnosed among PGIs on PET/CT, and it has a strong relationship with smoking. We suggest that a diagnosis other than Warthin tumor should be considered for PGIs in nonsmokers. Thieme Publicações Ltda 2014-12-29 2015-04 /pmc/articles/PMC4399184/ /pubmed/25992164 http://dx.doi.org/10.1055/s-0034-1397334 Text en © Thieme Medical Publishers
spellingShingle Article
Bothe, Carolina
Fernandez, Alejandro
Garcia, Jacinto
Lopez, Montserrat
León, Xavier
Quer, Miquel
Lop, Joan
Parotid Incidentaloma Identified by Positron Emission/Computed Tomography: When to Consider Diagnoses Other than Warthin Tumor
title Parotid Incidentaloma Identified by Positron Emission/Computed Tomography: When to Consider Diagnoses Other than Warthin Tumor
title_full Parotid Incidentaloma Identified by Positron Emission/Computed Tomography: When to Consider Diagnoses Other than Warthin Tumor
title_fullStr Parotid Incidentaloma Identified by Positron Emission/Computed Tomography: When to Consider Diagnoses Other than Warthin Tumor
title_full_unstemmed Parotid Incidentaloma Identified by Positron Emission/Computed Tomography: When to Consider Diagnoses Other than Warthin Tumor
title_short Parotid Incidentaloma Identified by Positron Emission/Computed Tomography: When to Consider Diagnoses Other than Warthin Tumor
title_sort parotid incidentaloma identified by positron emission/computed tomography: when to consider diagnoses other than warthin tumor
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4399184/
https://www.ncbi.nlm.nih.gov/pubmed/25992164
http://dx.doi.org/10.1055/s-0034-1397334
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