الفهرس 
Aim of the WorkOnly 14 pages are availabe for public view
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Abstract
Exclusion Criteria:
Patients with other pathological subtypes as gastrointestinal stromal tumor (GIST) and neuroendocrine tumor (NET).
Patients who underwent neoadjuvant therapy before surgery.
Unavailability of paraffin block specimens for pathology and insufficient clinical information.
Enrollment of participants
A list of all eligible patients in the specified period of time (from 1/2018 to 12/2019) was retrieved from the patients’ records and traced to record disease outcome, clinicopathological parameters and response to different lines of treatment.
The data required for this study was collected from the files recording system in our unit. In this system, personal, clinical, laboratory, radiological, pathological, treatment received, and follow up data for every patient are recorded in separate files.
An informed consent was obtained from the patients (Appendix I).
The following information was obtained from the files for each patient: Personal data; name, age at diagnosis (≤50 or >50 years), and gender.