(1) Sebaceous cysts there'd been, requiring surgical removal, and ulcerated varicose veins.

(2) What drug treatment should sebaceous cyst and folliculitis use?

(3) Methods:sebaceous cyst by post-operative pathology in 52 cases were studied retrospectively. The sonographic features were analysed.

(4) Objective:To analyze the sonographic features of sebaceous cyst and to improve the diagnosis.

(5) The optimal cure time of sebaceous cyst ? It is good that summer becomes an operation?

(6) After biopsy, desmoid was found in4cases, sebaceous cyst in2cases, lipoma in2case, neurofibroma in2cases and mixed tumor in2cases.

(7) High frequency Color Doppler ultrasound in the diagnosis of sebaceous cyst has an important value.

(8) Aim Toinvestigate the cause(), mechanism and the therapeutic regimen of sebaceous cyst affiliated with infection.

(9) Results In all the cases, there are 34 cases of dermoid cyst, 7 cases of epidermoid cyst, 4 cases of mucous cyst, 4 cases of sebaceous cyst.

(10) Conclusions:High frequency Color Doppler ultrasound in the diagnosis of sebaceous cyst has an important value.