Hello. I am 24 years old, male. A few days ago, I accidentally noticed an enlarged lymph node above my collarbone. I went to my doctor, and she told me that the node is called a sentinel node and that it's really concerning because many cancers like stomach and pancreatic metastize there. My oncologist visit is on May 7, so in a week. My anxiety is through the roof now. I've read about the node and I'm pretty certain that I'll be gone within 6 months, because mets to that particular lymph node mean that the cancer is stage 4 already. I had some clear scans within the last year, particularly:
-abdominal MRI 04.2019
-chest ct, bronchoscopy, abdominal ultrasound 11.2019
-upper GI scope 12.2019

Its unlikely that a gastric cancer grew and spread within 6 months from the last scan right? And the same goes for pancreatic cancer, my pancreas were clear on an mri a year ago.