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6 votes
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What can cause a visual disturbance followed by a headache?

What you're describing has been known since antiquity. What you first describe (an arc-like enlargening area of blurry vision) has been called a scintillating scotoma and artists and patients alike ...
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6 votes

Real dangers of CT Scan made only once at age of 31

CT brain at 31, what's the risk? Short answer: Very little, compared to overall cancer risk* Longer answer: Your girlfriend is concerned about increased risk of brain malignancy due to having a CT at ...
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5 votes
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Would a regular ultrasound be able to differnciate a benign ovarian cyst from an ovarian tumor? Or is a Transvaginal ultrasound needed?

Your question contains several parts. How is the process of the transvaginal ultrasound different than just a regular ultrasound? I imagine it's inserted into the vagina? Is it quite painful? ...
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5 votes
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Accelerated tumor growth after stopping prednisolone?

I am not a veterinary so I can't answer your question in particular. Though, maybe following points on the mechanisms of action of prednisolone might perhaps bring some clarifications: Prednisolone ...
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4 votes

What are the dangers of screening tests in overdiagnosis and overtreatment?

Is screening a good thing? -Overall yes, but with caveats. First, take an extreme example of an individual undergoing a full body CT scan at least once a year, every year after the age of 50. The ...
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4 votes
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What are the dangers of screening tests in overdiagnosis and overtreatment?

Overdiagnosis is not the same as misdiagnosis (for example, many people are concerned that ADHD is often misdiagnosed, but call it overdiagnosis.*) Overdiagnosis and overtreatment are intertwined. ...
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4 votes
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Why is sepsis more common with leukemia than with cancers involving physical tumors?

It's a combination. By definition, leukemia affects the production and/or development of white blood cells (MedlinePlus - Leukemia). If not enough white blood cells are produced (AKA neutropenia) or ...
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  • 246
4 votes
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Teratomas of cardiac tissue with their own "heartbeat"?

The term you're looking for is pericardial teratoma. Another related term you'll be interested in is fetus-in-fetu, which is essentially a parasitic twin growing somewhere within the body, usually the ...
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4 votes
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What is the difference between a polyp and a papilloma?

A polyp is a broad term that is defined only by its macroscopic appearance. So, I'll just repeat the definition provided in the question: A polyp is a mass that projects above a mucosal surface... ...
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3 votes

What is Immunotherapy for cancers?

This is very broad as asked. I will answer with one example, there are others. Immunotherapy gets the patient's own immune system to destroy the tumours rather than the treatment itself destroying ...
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3 votes

What is the meaning of T2 Nx Mx in histopathological examination?

It is impossible to answer these personal situations. In general, yes it is possible that no lymph nodes were removed during surgery. Whether that might be the case with your father, I simply cannot ...
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  • 431
3 votes

Is biopsy still required for cancer diagnosis given that advanced medical imaging is now available?

In many cases yes, a tumor must be biopsied in order to determine exactly what type of tumor it is. Advanced imaging can, in some cases, diagnose a specific type of tumor. However, there are many ...
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3 votes
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Recurrent schwannoma implications?

Neurofibromatosis comes in three forms, one of which is called "Schwannomatosis". It usually develops in the patient's 20s or 30s and is characterized by people developing schwannomas. The most ...
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  • 6,998
2 votes

Real dangers of CT Scan made only once at age of 31

The TL;DR answer is: yes, radiation can cause cancer, but no one knows for sure exactly what the risk is of one CT scan. Radiation (especially in fetuses/children) increases the likelihood of cancer. ...
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2 votes
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What is neurofibromatosis?

In essence, neurofibromatosis is a disorder that makes nerve cells grow out of control and develop tumors. These tumors can be anywhere nerve cells are, so in the brain, spine, etc. Tumors, to most ...
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  • 6,998
2 votes

"Narrow" Pure Androgen-secreting Adrenocortical Adenoma

These patients were all female, and the tumors are described as exceedingly rare. Were you looking for males? https://www.ncbi.nlm.nih.gov/pubmed/14668717 METHODS: A retrospective chart review ...
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2 votes

Diameters of vessels metastases spread through

Studies with high resolution intravital microscopy have shown that cancer cells in circulation can deform and squeeze through vessels as small as capillaries, which are usually 5-10 µm in diameter. A ...
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  • 51
1 vote

Real dangers of CT Scan made only once at age of 31

The risk from a single CT exposure should realistically be estimated to be zero. The commonly used "linear no-threshold extrapolation model" to get to estimates of cancer risks due to exposure to low ...
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