Mucinous cystadenomas are benign tumors that typically develop in the ovaries. They are filled with a thick, gel-like fluid called mucin and can vary in size. These cysts are usually asymptomatic but may cause discomfort or pressure in the abdomen if they grow large. Diagnosis often involves imaging techniques like ultrasound or CT scans, and treatment usually consists of surgical removal if necessary. While they are not cancerous, monitoring is essential to ensure they do not develop into more serious conditions, such as mucinous cystadenocarcinoma, which is a malignant form of the tumor.