Authors
Sannia Sjöstedt, Ane Yde Schmidt, Filipe Garrett Vieira, Gro Linno Willemoe, Tina Klitmøller Agander, Caroline Olsen, Finn Cilius Nielsen, Christian von Buchwald
Publication date
2021/4
Journal
Journal of Cancer Research and Clinical Oncology
Volume
147
Pages
1019-1027
Publisher
Springer Berlin Heidelberg
Description
Purpose
The purpose of our study was to compare genomic changes in sinonasal intestinal-type adenocarcinoma (sITAC) and colorectal adenocarcinoma (CRC), as they are histomorphologically indistinguishable. This can cause diagnostic difficulties as sinonasal tumours initially diagnosed as sITAC may represent metastasis from CRC, a frequent cancer. Previous studies have not uncovered the underlying mechanism behind the histomorphological resemblance.
Methods/patients
Tissue samples from all consecutive patients with sITAC at our facility (20 patients) were compared to samples from 20 patients with CRC as well as samples from 2 patients with both CRC and sinonasal tumours. DNA sequencing was performed using Illumina TruSight Oncology 500 panel consisting of 523 cancer-associated genes. Frequent mutations were inspected …
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