Doctor insights on:
Are Carcinoid Tumors Linked To Asbestos
Carcinoid refers to neuroendocrine tumors originating in gastrointestinal (GI) tract, lungs and appendix. They are usually indolent developing over many years. Aggressive, fast-growing forms such SCLC known as Oat Cell Ca of lung represents neuroendocrine carcinoma that exhibits rapid growth and early spread to distant sites. They are sensitive ...Read more
For colon cancer,Peritoneal Carcinoma's, roughly what percentage of those malignant tumors are cancerous.I read malignant tumors are 100% cancer.
Not really: Most GI stromal tumors are sporadic. There are rare cases where there can be familial syndromes. In general having a G.I. Stromal tumor is not associated with increased risk of other cancers or lipomas. Sporadic lipomas are also very common. ...Read more
Yes: Benign lung tumors make up about 5% of lesions found in the lung. The majority are malignant i.e. squamous Ca , adenoCa and small cell neuroendocrine tumors. Among the rare but frequent benign lung lesions are the a) Hamartoma : made up of tissue from the lung's lining as well as tissue such as fat and cartilage. Then there are the b) Bronchial Adenomas and c) lesions from inflammation. ...Read more
Cystic astrocytoma: Not all cystic astrocytomas are malignant. Being cystic does not make the tumor malignant, there are other findings in the tumor that need to be present to declare the tumor malignant. ...Read more
Asbestos can cause mesothelioma and asbestosis, but how common are those diseases in those heavily exposed?
Asbestos: asbestosis is fairly common in people who have sufficient exposure. Mesothelioma is very rare and takes about 50 years from the exposure to the onset of the cancer. I average diagnosing about 1 lung cancer a week but only find mesothelioma about 1 case every 3 years or so to give you an idea. ...Read more
CT scans produce high amounts of radiation. Wouldn't that cause cancer? Some articles online say CT scans have been linked to cancer.
Too low to measure: The radiation from scans is real and is ionizing, capable of causing cancer. I've looked at the math and the risk is still very low -- and no reasonable person questions the benefits of a CT scan when it's ordered responsibly. You also know that you get ionizing radiation from cosmic rays and even the potassium in your own body (it's mildly radioactive). Life's about weighing risks and benefits. ...Read moreSee 1 more doctor answer
Are nasal tumors rare in people in 30's, both benign and malignant? What are statistics of cancerous ones?
Yes: Nasal tumors are less common but may still occur in younger people. See a medical professional for an examination to determine the cause. Don't jump into statistics about malignancy before you know what is wrong. ...Read more
I say "No": This stuff has been thrown around for almost 30 years without any mechanism that makes sense (the radiation from a phone isn't the wavelength that damages genes). Epidemiology by survey, especially retrospective studies, generates many false-positive alleged links; in one huge study, there were more cancers on the opposite side. Enjoy technology and stop worrying. ...Read more
Several.: The types of colorectal cancers you refer to include hnpcc (hereditary nonpolyposis colorectal cancer) and fap (familial adenomatous polyposis). However, each of these can also arise form a new mutation with no family history. Garden variety colorectal cancer also has some heritability, though far less than those noted above. ...Read moreSee 1 more doctor answer
Neuroendocrine tumor: It is a relatively benign type of tumor that can secrete a variety of hormones, most notably serotonin. They are most commonly found in the gut or the lungs. They do not come from the lining of the lungs or the gut (as adenocarcinomata do). They come from a different line of cells. Carcinoid syndrome occurs when large amounts of serotonin get into the bloodstream, assoc with flushing and diarrhea. ...Read more
I would say not: Hi. No, I would say pituitary tumors aren't neuroendocrine (NE) tumors (nor are craniopharyngeomas). Generally the term "neuroendocrine" refers to nerve cells that secrete hormones. Examples would be hypothalamic neurons regulating the anterior pituitary, cells of the posterior pituitary, the adrenal medulla. A classic NE tumor is a carcinoid tumor; there are many examples, but not pit. adenomas. ...Read more
Are benign and malignant nasal tumors common or rare? What are the statistics for benign and malignant nasal tumors and who mostly gets them?
Nasal tumors: The most common tumors of the nasal cavity are squamous cell carcinoma and adenocarcinoma variants. They are twice as common in men versus women, and the median age of presentation is in the early to mid 60's. The patient will usually present with chronic sinus congestion or recurrent nasal obstruction. Risk factors include tobacco smoke and occupational exposure (wood dust and textile dust). ...Read more
Which malignancies and/or granulomatous conditions are seen in individuals that only have IgG subclass 3 (igg3) deficiency?
How much metastasis does there need to be to cause carcinoid syndrome from midgut carcinoid tumors?
Yes: Malignant is cancerous.Get a more detailed answer ›
Asbestos is a silicate mineral that was used extensively in construction as insulation for buildings. It was later found to cause lung disease in humans, and is no longer used in construction. However, the demolition of old building continues to put some people at risk of ...Read more
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