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Each disease, type of disorder, or clinical trial can have its own definition of a partial remission. For example, a partial remission for cancer may be defined as a 50% or greater reduction in the measurable parameters of tumor growth as may be found on physical examination, radiologic study, or by biomarker levels from a blood or urine test.
The spontaneous regression and remission from cancer was defined by Everson and Cole in their 1966 book as "the partial or complete disappearance of a malignant tumour in the absence of all treatment, or in the presence of therapy which is considered inadequate to exert significant influence on neoplastic disease."
Within the TNM system, a cancer may also be designated as recurrent, meaning that it has appeared again after being in remission or after all visible tumor has been eliminated. Recurrence can either be local, meaning that it appears in the same location as the original, or distant, meaning that it appears in a different part of the body.
Similar findings have been reported for colorectal cancer as well. [22] [23] There are two types of circulating tumor cell cluster, one that consists of cancer cells only is termed homotypic. A CTC cluster that also incorporates other cells including white blood cells, fibroblasts, endothelial cells, and platelets, is termed heterotypic. [24]
Continued cigarette smoking negatively impacts limited-stage small cell lung cancer survival. All clinicians and care providers should strongly encourage smoking cessation at the diagnosis of limited stage small cell lung cancer. Comparing to continued smokers, patients who quit at or after diagnosis lower the risk of death by 45%. [28]
Oncology is a branch of medicine that deals with the study, treatment, diagnosis, and prevention of cancer. A medical professional who practices oncology is an oncologist . [ 1 ] The name's etymological origin is the Greek word ὄγκος ( ónkos ), meaning "tumor", "volume" or "mass". [ 2 ]
Lead time bias affects the interpretation of the five-year survival rate, effectively making it appear that people survive longer with cancer even in cases where the course of cancer is the same as in those who were diagnosed later. [3]
A diagnosis of CUP requires a clinical picture consistent with metastatic disease and one or more biopsy results inconsistent with a tumor cancer. CUP is found in about 3 to 5% of all people diagnosed with invasive cancer, [1] and carries a poor prognosis in most (80 to 85%) of those circumstances. The other 15 to 20% of patients, however, have ...