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Cancer is a group of diseases involving abnormal cell growth with the potential to invade or spread to other parts of the body. [3] [4] Cancer can be difficult to diagnose because its signs and symptoms are often nonspecific, meaning they may be general phenomena that do not point directly to a specific disease process. [5]
A carcinoid crisis with profound flushing, bronchospasm, tachycardia, and widely and rapidly fluctuating blood pressure [1] can occur if large amounts of hormone are acutely secreted, [51] which is occasionally triggered by factors such as diet, [51] alcohol, [51] surgery [1] [51] chemotherapy, [51] embolization therapy or radiofrequency ablation.
Depending on the amount of the blood loss, symptoms may include shock. Upper gastrointestinal bleeding can be caused by peptic ulcers, gastric erosions, esophageal varices, and rarer causes such as gastric cancer. The initial assessment includes measurement of the blood pressure and heart rate, as well as blood tests to determine the hemoglobin.
Hypertension or high blood pressure affects at least 26.4% of the world's population. [15] Hypertensive heart disease is only one of several diseases attributable to high blood pressure. Other diseases caused by high blood pressure include ischemic heart disease, cancer, stroke, peripheral arterial disease, aneurysms and kidney disease.
Patients are typically offered testing if they have either a personal or family history of cancer that meets certain criteria, Zakalik adds. Those criteria have broadened over the last few years ...
The annual rate of U.S. colon cancer screening is nearly 60%, well short of the 80% of age-eligible adults goal set by the American Cancer Society and other groups.
The Pancoast tumor was first described by Hare in 1838 as a "tumor involving certain nerves". [2] It was not until 1924 that the tumor was described in further detail, when Henry Pancoast, a radiologist from Philadelphia, published an article in which he reported and studied many cases of apical chest tumors that all shared the same radiographic findings and associated clinical symptoms, such ...
Cerebral blood flow remains unchanged over a wide range of arterial pressures (mean arterial pressure of 50–150 mmHg) through a process termed autoregulation of blood flow. [52] Signs and symptoms of hypertensive encephalopathy may include severe headache , nausea and vomiting (often of a projectile nature), focal neurologic signs, and ...