The World Famous All Scrubbed Up: "What is THAT?" Competition #1 Part 1

So here's an idea for the medics and non-medics amoung you. Welcome to the first installation of the All Scrubbed Up "What is THAT" Competition. From time to time, we'll post something up that I've either removed during a surgery - or that we've happened on across the medical web. Your job? Tell us what it is!

WARNING: The following images may not be suitable for children under the age of 16 - and squirmish males.

CLUE: 42 year old woman presents with growing mass in her abdomen for three years.


What is THAT? (Please post your answers as comments - winner gets... uh... their picture on the blog!)

Update: ANSWER HERE!