The appearance of thigh roots near the scrotum part of the growth of a white top hard flesh phenomenon may be a soft fibroid, but also may be boils or common warts and other diseases. 1. Molluscum contagiosum: a common benign tumor of the skin, is a fibrous tissue growth, mainly manifested as a high skin surface with a tibial growth, generally can be filamentous, bulbous or pocket-like growths. 2. boils: mostly caused by staphylococcus aureus infections, the onset of the initial stage can be manifested as red, swollen, hot, painful nodules, and then gradually enlarged, a few days after the central softening, the top of the boil can appear yellowish-white pus head. 3. common warts: wart-like growths caused by human papilloma virus infection of the skin and mucous membranes, which can also be manifested as a white top of the hard flesh phenomenon, and the surface of the rough, can be a long time. If the above symptoms, it is recommended that you get medical attention to identify the cause of the problem and actively cooperate with the doctor’s treatment.