Medicinema on Instagram: "Teratoma --- Parasitic twin --- Fetiform teratoma ✨ Teratomas are tumours made up of tissues, such as hair, muscle and bone. They most often occur in the ovaries in women and the testicles in men. They may be benign or malignant. Parasitic twin is a rare type of conjoined twin where one twin stops developing and attaches to another, fully developed twin The fully developed twin is called the autosite twin and parasitic twin is dependent on the autosite twin for survival