People with early stomach cancer don’t usually have any symptoms. If there are symptoms, they are typically vague. These can include:
Indigestion and stomach discomfort
A bloated feeling after eating
Loss of appetite
Peptic ulcers and acid reflux (also called GERD) cause similar symptoms. Antacids or histamine blockers may give temporary relief. Many other conditions can cause these symptoms as well. For these reasons, people may not recognize the problem as serious and may put off seeing a doctor. A gastric tumor can grow very large before it causes other symptoms.
Pheochromocytomas and extra-adrenal paragangliomas are rare tumors arising from neural crest tissue that develops into sympathetic and parasympathetic paraganglia throughout the body.
The most recent World Health Organization classification utilizes the term pheochromocytoma exclusively for tumors arising from the adrenal medulla, and the term extra-adrenal paraganglioma for similar tumors that arise from other locations.
Incidence and Mortality
The incidence of pheochromocytoma is 2...