Monarch Disease Ontology id MONDO_0003630 (pancreatic serous cystadenocarcinoma) is a metastasizing, slow-growing malignant epithelial neoplasm that arises from the exocrine pancreas. It is characterized by the presence of cysts and is composed of glycogen-rich malignant epithelial cells which produce a watery fluid. Signs and symptoms include upper gastrointestinal bleeding, weight loss, jaundice, and abdominal pain. Also known as: pancreas serous adenocarcinoma, serous cystadenocarcinoma of pancreas, serous cystadenocarcinoma of the pancreas.