Occult Primary Neuroendocrine Tumor Presenting as Axillary Lymph Node Metastasis: A Case Report

Abstract Neuroendocrine cells (NECs) found throughout the body. These cells exhibit a spectrum of malignant potential, ranging from benign to malignant while the gastrointestinal (GI) tract remains the most frequent primary site for neuroendocrine tumors (NETs), these neoplasms can arise from various other locations, including the pancreas, lungs, and bronchial tree, appendix , colon and rectum . Clinical case we present exemplifies the diagnostic challenges associated with NETs. It involves a metastasis of a neuroendocrine tumor (NETs) to an axillary lymph node, with unknown primary origin. Our case highlights the potential for NETs to present with occult primary tumors, making diagnosis and treatment planning challenging.