Doctor insights on:
Do Pet Scans Show Lung Cancer
Sort of...: The pet scan non-specifically show very metabolically active (consuming lots of energy), and lung cancer and its metastasis fit that category. It is not specific. Benign conditions like sarcoid can also make pet studies glow very brightly as well. Slow growing lung cancer, broncheoalveolar may not be pt avid. ...Read moreSee 2 more doctor answers
Cancer is a group of diseases that is characterized by uncontrolled cell growth leading to invasion of surrounding tissues that spread to other parts of the body. Cancer can begin anywhere in the body and is usually related to one or more genetic mutations that allow normal cells to become malignant by interfering with internal cellular control mechanisms, such as programmed cell death or by preventing ...Read more
How often do you need to use PET scan or bronchoscope to locate lung cancer because it does not show on CT scan but symptoms tell you to keep looking?
Clinical judgement: This pathologist is underwhelmed with the health or public benefits of intensive screening for tiny lung cancers. I'd hope that if the person is symptomatic, some other investigations are undertaken and the actual cause gets found. ...Read more
Life expectancy for lung cancer gone to brain. Pet scan shows no other cancer now, only 1 tumor on brain. Surgery and whole brsin radiation will be?
"oligometastatic": Patients with a single brain tumor as the only site of metastatic disease are called "oligometastatic." the chance of cure, though small, is real. Every cancer specialist has a few such patients. I would strongly recommend aggressive treatment, including either radiosurgery (cyberknife, gammaknife, etc.) to the brain or surgical resection, and again stereotactic or chemoradiation to the lung. ...Read moreSee 2 more doctor answers
Does a PET scan have a much better chance of picking up a central lung cancer if it was missed at LDCT?
LDCT is a : noncontrast lung nodule screening study, and it is possible that small central lesions may not be visualized due to proximity to normal blood vessels or other structures. PET is extremely sensitive, but if a diagnostic contrast enhanced CT scan with thinner collimation and higher resolution is negative, probably unnecessary. ...Read more
Can pet scan always diagnose /confirm presence of lung cancer or can only give indication and later biopsy is vital to confirm cancer if a nodule seen?
Bx definitive: A positron emission tomography (pet) scan is an imaging test that uses a radioactive substance called a tracer to look for disease in the body. It is often used to determine the treatment of cancer, if it is spreading, or improving, etc. Used in combination with tests such as ct or mri, it can provide a very high index of suspicion for cancer, but a bx is always definitive and used for tx. ...Read moreSee 1 more doctor answer
My mom has stage 4 lung cancer. the pet scan showed 3 lesions by the spine. does this mean the cancer has spread to her bones?
By the spine may b: different than on or in the spine.Ask her Docs for specifics. ...Read more
5cm Pleural mass in right lung..pet scan show not cancer...is surgery still necessary and what are the risks ..thanks?
Lung mass: Something is missing! There must have been symptoms that led to a pet scan. Unless a biopsy was performed how could your doctor simply say that there was no cancer? I hope there was indeed no cancer but the symptoms that led to the pet scan should be a cause for biopsy. Do the doctors have any idea what the pleural mass might be? Please keep me informed. ...Read more
May be: A question of the form can A show B is almost always answered maybe, because you cannot completely exclude the possibility that it may or may not demonstrate the finding in question. also a mass has to have at least 1,000,000,000 cells before it is visible on a contemporary scan. ...Read more
I have a 2 CM nodule and smaller nodules in my lungs. Will be getting a pet scan. How quickly will it spread if it's cancer?
Pet scans most often use a radioactive form of glucose, the energy source for most of the cells in our bodies. The pet scanner can detect and measure how much of the radioactive glucose analog, f-18 fdg, is in a particular organ or region. The areas using more glucose are hyper metabolic and generally more worrisome. Our brains and sometimes hearts prefer glucose as food, making ...Read more
Deoxygenated blood enters the lungs from the right side of the heart and travels to the lungs. When you inspire, oxygen flows into the lungs, transverses the capilliares and attaches to hemoglobin down a gradient. At the same time, co2 diffuses into the capilaries and is expelled with exhalation. Oxygen rich blood then flows to the left side of the heart and into the ...Read more
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