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Doctor insights on: Pet Ct Melanoma Initial Staging

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Dr. Mike Bowman
905 doctors shared insights

Skin Cancer (Definition)

Skin is the largest and one of the most complex organs in the body composed of hundreds of different structures. Nearly any of these elements can degenerate into cancer. However the three most common are: basal cell, squamous cell and melanoma which occur in that order and degree of aggressiveness. Although heredity plays a major role, sun exposure and tobacco use & ...Read more


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What is the definition or description of: pet-ct melanoma diagnosis?

What is the definition or description of: pet-ct melanoma diagnosis?

Metastases: PET CT is often utilized to identify metastases from melanoma. Utilizes isotope F18 FDG for glucose metabolism of malignant lesions to identify them. Most malignant neoplasms have increased metabolic activity. CT portion compares anatomic lesion with area of increased uptake shown by PET. ...Read more

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My father has metastatic melanoma, 1 lymph node involvement. Pet scan and CT scan shows no other metastasis at this time. Does this mean he is cured?

My father has metastatic melanoma, 1 lymph node involvement. Pet scan and CT scan shows no other metastasis at this time.  Does this mean he is cured?

Melanoma...: Melanoma is a very tricky disease and must be followed closely. It can metastasize to odd places. It is good news that only 1 lymph node is seen on pet/ct rather than many lymph nodes but one should note that micrometastases or very small lesions may be below the resolution of pet imaging. ...Read more

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Is it possible to get melanoma from one CT scan (in chest area)? If yes how we can prevent it and how long it will take to appear?

No: Melanoma is related to skin paleness and exposure to the sun. It is also largely random in appearance. There is no correlation between ct scans and melanoma. This does not exempt you from getting melanoma in this area, however uncommon, but the ct had nothing to do with it. ...Read more

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My mom is getting a CT scan for a mass, which might be a tumor, and she has melanoma; what are her choices?

My mom is getting a CT scan for a mass, which might be a tumor, and she has melanoma; what are her choices?

First evaluate mass: The mass may be normal and benign or malignant and a metastasis. Complete her evaluation and diagnostic studies tomhelpmdetermine the right course of action once more information is obtained. ...Read more

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Ct scan abd/pelvis,can it be melanoma(had melanoma), what should be done?Mild-low attenuation/left arnexal region likely related to ovarian cyst.

An ultrasound: would confirm that this simply represents an ovarian cyst. The chance of the finding you describe representing melanoma is almost zero. ...Read more

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What is the likelihood of a new subpleural nodule (1 cm by 1 cm) being malignant? Showed up in annual CT scan. Have had sarcoma, breast, and melanoma

It depends1: In a patient with prior history of cancer, lung or pleural based nodule can be due to cancer especially if the nodule is new(not seen in prior CT scan/s of your chest). A short follow up CT scan(2 monts from now) can be very helpful to determine if it is growing in which case it would indicate likely metastasis from one of your previous cancers. PET scan is another test that can helpful to define ...Read more

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Hypothetically if somebody had melanoma on their lower back and had a CAT Scan of abdomen and pelvis 4 other reasons.Would melanoma show up on CAT?

Hypothetically if somebody had melanoma on their lower back and had a CAT Scan of abdomen and pelvis 4 other reasons.Would melanoma show up on CAT?

It could: potentially show up on an abdomen/pelvis CT, depending on the size. There are no specific features of melanoma on CT, so, if small, it would look the same as the myriad of benign nevi, keratoses, cysts, etc... that are so common, and might not be mentioned as a relevant finding in the report. ...Read more

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Staging (Definition)

Many diseases have specific treatments based on their severity. A disease can have certain criteria to determine their severity and applying this criteria to determine how advanced the disease state is called staging. Most commonly this is applied to cancer, and be determining how far the cancer has spread locally and/or to distant sites a stage of cancer can be ...Read more


Dr. Jeffrey Stevens
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Computed Tomography (Definition)

Ct uses xrays taken an 360 degrees combined with a computer to see"inside" the body. The table moves as the xray tube and detectors spin around the patient 10 times a second or more! the image shows excellent soft tissue detail, enhanced with injection of intravenous contrast or oral contrast. This way the body is shown in slices, in any plane, usually axially, but ...Read more