Cancer in origin is not one of the infectious diseases, and what we are talking about here in this series are very rare and uncommon cases..

Therefore you can deal with a cancer patient normally, and do not make him feel the pain and deal with him as if he were leprous.. he deserves your support, not your aversion..

But today we will talk about a cancer that passes from one being to another.. and from one person to another..

This subject is different from "Infectious causes of cancer".. and these are a bacterial or viral infection that increases your chances of developing cancer, and may, God forbid, actually give it to you..

For example "Tuberculosis", a lung disease caused by a bacterium, is nevertheless among the causes of lung cancer..

Patients of the "B and C" virus.. their chance of developing liver cancer is 200 times greater than a person who has not been infected with these viruses..

"Merkel cell polyomavirus" is the cause of most cases of a rare type of severe skin cancer.. called "Merkel cell carcinoma"..

There is a whole group of viruses called "Oncoviruses".. that cause cancer..

Bacteria that cause cancer.. viruses that cause cancer.. and even parasites.. some of them cause cancers.. just as "Schistosoma haematobium" mostly causes bladder cancer.. and malaria in Africa causes "Burkitt's lymphoma"...

But in extremely rare cases something else happens..

Cancer cells pass from an infected body and cross into a healthy body..

"Clonally transmissible cancer".. or "Contagious cancers" are cancers that pass from one living body to another living body..

This transmission happens in dogs.. and hamsters.. and some shellfish, and the seal and the "Tasmanian devil" that is in the picture..

And rarely in humans...

For in the year 2015, a Chinese man contracted a parasitic infection from a tapeworm because of eating "sushi".. the cells of this worm were dividing with a crazy, abnormal division.. and transmitted this "event" to his cells.. which began dividing in the same way, and turned into cancer cells..

Watch out, here we are not talking about a cancer that arose from the patient's own body cells.. this one passed to him from another being..

And if you would like to classify this case under "cancer transmission due to parasites".. there is no problem at all..

In another case, a surgeon was performing an operation on a patient with a malignant fibrous tumour, and he accidentally cut himself with the scalpel during the surgery, and what happened then was that he unintentionally introduced into his own body some of the patient's infected cells.. and he contracted the disease as a result..

And in humans too there are cases that contracted "Kaposi's sarcoma" after organ transplant operations from donors infected with the disease.. and it later became clear that the transplant operation included infected cells.. which caused the infection..

The case is very rare and requires the infected cells to enter your body and begin to interact with your cells.. and this does not happen to you from contact with an ordinary cancer patient.. you can sleep in the embrace of a cancer patient on one bed without any problems..

In the animal called the "Tasmanian devil" this contagious type of cancer appeared "called DFTD" and it began to exterminate the species.. because it is 100% fatal..

But suddenly a strange natural evolution happened.. and the switches of evolution that God created in our cells went to work, in an attempt to save this species..

Suddenly, in 25% of the "Tasmanian devil" animals, a defensive immune mechanism evolved.. that attacks this cancer.. and isolates its cells.. and kills it..

Today medicine is trying to get its hands on this mechanism.. because it could benefit humans in eliminating many cancers.. and recovering from them forever..

The subject of cancer cells that travel from person to person and cross over is rare and strange.. but not stranger than the disease of "water allergy" or for example the disease of "Alice in Wonderland syndrome"..

And those we will talk about later..

And there remains more to be said..

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References:

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1 - Welsh, James S. (2011). "Contagious cancer". The Oncologist. 16 (1): 1–4. ..

2 - Weiss, Robin A.; Fassati, Ariberto; Murgia, Claudio (21 December 2006)...

3 - Gärtner, Hermine-Valeria; Seidl, Christian; Luckenbach, Christine; Schumm, Georg; Seifried, Erhard; Ritter, Horst; Bültmann, Burkhard (1996). "Genetic analysis of a sarcoma accidentally transplanted from a patient to a surgeon". New England Journal of Medicine. 335 (20): 1494–1497..

4 - Rapid evolutionary response to a transmissible cancer in Tasmanian devils:

https://www.nature.com/articles/ncomms12684

5 - Transmissible cancers, are they more common than thought?

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4869404/

6 - Previous posts:

- https://goo.gl/ZZir6n