Below are pictures of miscellaneous rat tumors.
This first set of photos are of cancers growing in front of or below the ear.
This is my rat Sparky, who developed a fast-growing cancer
in front of his ear. I first
noticed the lump
Here’s another of my rats, Jimmy, who developed a
fast-growing tumor below his ear. I
first noticed a lump at the point of his jaw on
Here’s another rat, Eli Spooner, who developed a cancer in front of his ear.
My rat Roo had numerous sebaceous epitheliomas throughout most of his life. Many of them acted like sebaceous cysts. I surgically removed all the large ones. I euthanized him at age 25 months due to respiratory distress, and in his autopsy found one of the only lung tumors I’ve ever seen in a rat. Pathology showed his was a basal cell carcinoma with sebaceous and epithelial differentiation.
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