A<unk>  is defined as a focal growth that resembles a neoplasm but results from faulty development in an organ. They can occur anywhere in the body. They have been described in many organs but especially the chest, breast, skin and brain. They are also reported in the eye, colon and liver.
Hamartoma
Thecoma
Cylindroma
Syringoma
Trichoblastoma
Ganglion cyst
Pilomatricoma
Littoral cell angioma