Can integrated 18F-FDG PET/MR replace sentinel lymph node resection in malignant melanoma?

Can integrated 18F-FDG PET/MR replace sentinel lymph node resection in malignant melanoma? Purpose To compare the sensitivity and specificity of 18F-fluordesoxyglucose positron emission tomography/computed tomog- raphy (18F-FDG PET/CT), 18F-FDG PET/magnetic resonance (18F-FDG PET/MR) and 18F-FDG PET/MR including diffusion weighted imaging (DWI) in the detection of sentinel lymph node metastases in patients suffering from malignant melanoma. Material & Methods Fifty-two patients with malignant melanoma (female: n = 30, male: n = 22, mean age 50.5 ± 16.0 years, mean tumor thickness 2.28 ± 1.97 mm) who underwent 18F-FDG PET/CT and subsequent PET/MR & DWI for distant metas- tasis staging were included in this retrospective study. After hybrid imaging, lymphoscintigraphy including single photon emission computed tomography/CT (SPECT/CT) was performed to identify the sentinel lymph node prior to sentinel lymph node biopsy (SLNB). In a total of 87 sentinel lymph nodes in 64 lymph node basins visible on SPECT/CT, 17 lymph node metastases were detected by histopathology. In separate sessions PET/CT, PET/MR, and PET/MR & DWI were assessed for sentinel lymph node metastases by two independent readers. Discrepant results were resolved in a consensus reading. Sensitivities, specificities, positive predictive values and negative predictive values were calculated with histopathology follow- ing SPECT/CT guided SLNB as a reference standard. Results Compared with histopathology, lymph nodes were http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png European Journal of Nuclear Medicine and Molecular Imaging Springer Journals

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Publisher
Springer Journals
Copyright
Copyright © 2018 by Springer-Verlag GmbH Germany, part of Springer Nature
Subject
Medicine & Public Health; Nuclear Medicine; Imaging / Radiology; Orthopedics; Cardiology; Oncology
ISSN
1619-7070
eISSN
1619-7089
D.O.I.
10.1007/s00259-018-4061-9
Publisher site
See Article on Publisher Site

Abstract

Purpose To compare the sensitivity and specificity of 18F-fluordesoxyglucose positron emission tomography/computed tomog- raphy (18F-FDG PET/CT), 18F-FDG PET/magnetic resonance (18F-FDG PET/MR) and 18F-FDG PET/MR including diffusion weighted imaging (DWI) in the detection of sentinel lymph node metastases in patients suffering from malignant melanoma. Material & Methods Fifty-two patients with malignant melanoma (female: n = 30, male: n = 22, mean age 50.5 ± 16.0 years, mean tumor thickness 2.28 ± 1.97 mm) who underwent 18F-FDG PET/CT and subsequent PET/MR & DWI for distant metas- tasis staging were included in this retrospective study. After hybrid imaging, lymphoscintigraphy including single photon emission computed tomography/CT (SPECT/CT) was performed to identify the sentinel lymph node prior to sentinel lymph node biopsy (SLNB). In a total of 87 sentinel lymph nodes in 64 lymph node basins visible on SPECT/CT, 17 lymph node metastases were detected by histopathology. In separate sessions PET/CT, PET/MR, and PET/MR & DWI were assessed for sentinel lymph node metastases by two independent readers. Discrepant results were resolved in a consensus reading. Sensitivities, specificities, positive predictive values and negative predictive values were calculated with histopathology follow- ing SPECT/CT guided SLNB as a reference standard. Results Compared with histopathology, lymph nodes were

Journal

European Journal of Nuclear Medicine and Molecular ImagingSpringer Journals

Published: Jun 6, 2018

References

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