What is metachronous carcinoma?
What is metachronous carcinoma?
The term metachronous is used in oncology to refer to two (or more) independent primary malignancies, when the second (or third, etc.) malignancy arose more than six months after the diagnosis of the first malignancy 1,2. These may be in the same, or in different, organs.
What does metachronous mean?
Medical Definition of metachronous 1 : not functioning or occurring synchronously the metachronous beating of cilia. 2 : occurring or starting at different times metachronous cancers of the large bowel — Journal of the American Medical Association.
What is metachronous metastasis?
“Synchronous metastasis” and “synchronous second carcinoma”were defined as the diagnosis of a distant metastasis or second carcinoma together with or within a three-month interval of the diagnosis of the primary colon cancer. “Metachronous”was defined as an occurrence after a period of three months postoperatively.
What is synchronous lung cancer?
Synchronous multiple primary lung cancer is defined as multiple lung lesions that develop at the same time, whereas metachronous multiple primary lung cancer describes multiple lung lesions that develop at different times, typically following treatment of the primary lung cancer.
What is synchronous movement of cilia?
Solution : Synchronous movement : Cilia in a transverse row beat simultaneously in one direction. It is called synchronous movement. < br> Metachronous movement The sequential movement of cilia, in a longitudinal row, one after the other in one direction is called metachronous movement: Loading Books. Answer.
What is metachronous beating of cilia?
Paramecium cells swim and feed by beating their cilia in a coordinated pattern. The beating of cilia in Paramecium is synchronized into waves called metachronal waves that travel along the cell body in a well-defined direction. Thus, the beating of cilia in Paramecium is synchronous and metachronous.
What does the term synchronous mean?
arising at precisely the same time
Definition of synchronous 1 : happening, existing, or arising at precisely the same time. 2 : recurring or operating at exactly the same periods.
What is a multifocal Tumour?
Multifocal breast cancer occurs when there are two or more tumors in the same breast. All of the tumors begin in one original tumor. The tumors are also all in the same quadrant — or section — of the breast.
What is Oligometastatic?
Oligometastasis is a state in which cancer patients have a limited number of metastatic tumors; patients with oligometastases survive longer than those with polymetastases. Extensive disease (ED)-small cell lung cancer (SCLC) is considered a systemic disease and a poor survival.
What is Lynch syndrome?
Lynch syndrome, also known as hereditary non-polyposis colorectal cancer (HNPCC), is the most common cause of hereditary colorectal (colon) cancer. People with Lynch syndrome are more likely to get colorectal cancer and other cancers, and at a younger age (before 50), including.
Can you have two different types of lung cancer at the same time?
It is possible for a person to have signs of both SCLC and NSCLC at the same time, but it is relatively rare. Research from 2018 notes that about 5–10% of all SCLC cases are combined SCL carcinoma (CSCLC). This means they show signs of different types of NSCLC as well, including cell types such as: adenocarcinoma.
What are multiple primaries in cancer?
Multiple primaries are defined as more than one synchronous or metachronous cancer in the same individual.