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A benign tumor is a mass of cells that does not invade neighboring tissue or metastasize (spread throughout the body). Compared to malignant (cancerous) tumors, benign tumors generally have a slower growth rate. Benign tumors have relatively well differentiated cells.
Pre-cancerous, or pre-malignant tumours, are not cancerous but can develop to be so and therefore it is important for doctors to monitor these tumours closely. Several kinds of benign tumour can ...
Amongst individuals undergoing surgical resection of a pancreatic cyst, about 23 percent were mucinous cystic neoplasms. These lesions are benign, though there is a high rate of progression to cancer. As such, surgery should be pursued when feasible. The rate of malignancy present in MCN is about 10 percent. [1]
Rarely, these cysts may grow more extensively and form rapidly multiplying trichilemmal tumors, also called proliferating trichilemmal cysts, which are benign, but may grow aggressively at the cyst site. [4] Very rarely, trichilemmal cysts can become cancerous. [5]
There are four types of ovarian cysts — functional cysts, PCOS cysts, benign ovarian tumor and malignant ovarian tumor — that range from harmless to fatal.
A pancreatic cyst is a fluid filled sac within the pancreas. The prevalence of pancreatic cysts is 2-15% based on imaging studies, but the prevalence may be as high as 50% based on autopsy series. [1] Most pancreatic cysts are benign and the risk of malignancy (pancreatic cancer) is 0.5-1.5%.
Simple benign cysts can be drained through fine-needle aspiration. [5] However, the risk of recurrence is fairly high (33–40%), and if a cancerous tumor was misdiagnosed, it could cause the cancer to spread. [5]
Brain (they can see small aneurysms, tumors, cysts, the six arteries, and brain volume) Nasal pharynx. Oral pharynx. Hypopharynx. Thyroid (they can see if it’s too large or small, as well as any ...