Patient history: 55 year-old with a mass in the right  flank (regio lateralis dextra), shown upon ultrasound examination to be a large cyst measuring 20x20x16 cm and weighing 1,8kg. The cyst is removed along with the entire right ovary.

This is a low power micrograph of the inner surface of the ovarian cyst with papillary outgrowths (excrescences)