Uterine angioleiomyoma in an African green monkey (Chlorocebus aethiops sabaeus)

What is it about?

This case report is about a tumour of the smooth muscle of the uterus and its blood vessels in a monkey. The tumour was a red/black lump on the uterus and under the microscope looked like it was made of multiple merging blood vessels containing blood and blood clots.

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Why is it important?

This type of tumour of the uterus has been reported in humans and not monkeys before this report. Primatologists should include this lesion as a differential when investigating suspected uterine diseases in monkeys. We also discuss the origin of the cells that make the tumour; smooth muscle of blood vessel or the uterus itself.