What does a complex cystic mass mean with multiple thicken septation ?

Visual description: A cyst is a single "bubble" like a balloon. The outer layer consists of cells and connective tissue. The center is not solid, instead of living cells the center is soft and filled with fluid or a thick cream. A complex cyst has dividers (septae) running through it, or can be thought of as a collection of cysts. It like a collection of balloons packed together.

High risk for compli: Where is your cyst located? In general cysts are benign and can be ignored unless they are larger than 5cm and have septate walls(complex cyst). Such cysts have a small risk of becoming cancerous. Therefore they require closer monitoring or preferably a surgical removal. Consult your doctor for advice to follow this cyst till it is determined to be benign... which may require surgical removal.