K E Rollins1, E Lucas2, N Tewari3, E James4, S Hughes5, J A Catton3. 1. Department of Oesophago-Gastric Surgery, Nottingham University Hospitals, Hucknall Road, Nottingham, UK. Electronic address: james.catton@nuh.nhs.uk. 2. University of Nottingham, Derby Road, Nottingham, UK. 3. Department of Oesophago-Gastric Surgery, Nottingham University Hospitals, Hucknall Road, Nottingham, UK. 4. Department of Oncology, Nottingham University Hospitals, Hucknall Road, Nottingham, UK. 5. Department of Radiology, Nottingham University Hospitals, Hucknall Road, Nottingham, UK.
Abstract
INTRODUCTION: Radiotherapy is increasingly used for both curative and palliative treatment of oesophageal malignancy. Accurate treatment depends on determining tumour location and length. This study assessed the value of PET-CT versus other staging modalities in determining tumour length. MATERIALS AND METHODS: Oesophageal cancer patients who underwent staging with PET/CT and endoscopic ultrasound (EUS) in addition to their diagnostic upper GI endoscopy and subsequent surgical resection were assessed. PET/CT length was obtained retrospectively by using Hermes Hybrid Viewer™ with a 1-5 Standardised Uptake Value grey scale. An SUV of 5 was used as the cut off for determining length. Direct measurement by EUS and OGD were determined. RESULTS: 53 patients underwent PET-CT, EUS, OGD and surgical resection for oesophageal cancer. Overall the correlation between PET-CT and histopathological length was strongest (Pearson r=0.5977, 95% CI 0.390-0.747) versus EUS (Pearson R=0.5365, 95% CI 0.311-0.705) and OGD (Pearson r=0.1574, 95% CI -0.118 to 0.410). After excluding tumours with a significant chemotherapy response, PET-CT length correlated significantly with histopathological length (R=0.5651, p=0.0005). In comparison, the correlation between histological length and EUS (R=0.4637, p=0.0057) measurement was less significant and this did not correlate with OGD (R=-0.1084, p=0.5417). CONCLUSION: Tumour length estimated by PET-CT correlated most strongly with histopathological length of oesophageal malignancy and is the most accurate determinant of tumour length of all the staging modalities. This suggests a potential role for PET-CT in the planning of radiotherapy and resection, particularly when considering the practical limitations of EUS.
INTRODUCTION: Radiotherapy is increasingly used for both curative and palliative treatment of oesophageal malignancy. Accurate treatment depends on determining tumour location and length. This study assessed the value of PET-CT versus other staging modalities in determining tumour length. MATERIALS AND METHODS:Oesophageal cancerpatients who underwent staging with PET/CT and endoscopic ultrasound (EUS) in addition to their diagnostic upper GI endoscopy and subsequent surgical resection were assessed. PET/CT length was obtained retrospectively by using Hermes Hybrid Viewer™ with a 1-5 Standardised Uptake Value grey scale. An SUV of 5 was used as the cut off for determining length. Direct measurement by EUS and OGD were determined. RESULTS: 53 patients underwent PET-CT, EUS, OGD and surgical resection for oesophageal cancer. Overall the correlation between PET-CT and histopathological length was strongest (Pearson r=0.5977, 95% CI 0.390-0.747) versus EUS (Pearson R=0.5365, 95% CI 0.311-0.705) and OGD (Pearson r=0.1574, 95% CI -0.118 to 0.410). After excluding tumours with a significant chemotherapy response, PET-CT length correlated significantly with histopathological length (R=0.5651, p=0.0005). In comparison, the correlation between histological length and EUS (R=0.4637, p=0.0057) measurement was less significant and this did not correlate with OGD (R=-0.1084, p=0.5417). CONCLUSION:Tumour length estimated by PET-CT correlated most strongly with histopathological length of oesophageal malignancy and is the most accurate determinant of tumour length of all the staging modalities. This suggests a potential role for PET-CT in the planning of radiotherapy and resection, particularly when considering the practical limitations of EUS.
Authors: Kinga Dębiec; Jerzy Wydmański; Izabela Gorczewska; Paulina Leszczyńska; Kamil Gorczewski; Wojciech Leszczyński; Andrea d’Amico; Michał Kalemba Journal: Asian Pac J Cancer Prev Date: 2017-11-26
Authors: Sweet Ping Ng; Jennifer Tan; Glen Osbourne; Luke Williams; Mathias A B Bressel; Rodney J Hicks; Eddie W F Lau; Julie Chu; Samuel Y K Ngan; Trevor Leong Journal: Clin Transl Radiat Oncol Date: 2017-03-07