[Surgical treatment for gyncomastia].

Objective: To introduce different surgical treatment for gyncomastia at different grades.

Methods: 37 cases with gynecomastia were divided into three grades as: grade I with fat as main tissue, grade II with proliferated fibro-gland as main tissue, grade III with big and ptosis breasts and sagging skin. Different surgical methods were chosen according to the different grades of gyncomastia.

[Preparation of porcine acellular dermal matrix by low concentration of trypsin digestion and repeated freeze-thaw cycles].

Objective: To establish a new method for the preparation of porcine acellular dermal matrix.

Methods: The antigenicity of the porcine dermis was weakened by removing epidermal and dermal cells from the porcine skin through the digestion with low-concentration trypsin and repeated freeze-thaw cycles. Split thickness porcine skin was treated with 0.

[Reconstruction of chest wall deformity in Poland's syndrome with soft silicone prosthesis].

Objective: To explore a method for reconstruction of Poland's chest wall deformity.

Methods: The customized, textured silicone prosthesis was fabricated from a soft silicone polymer that approximated to the softness of the pectoralis major muscle. A lateral incision of 6 cm on the affected chest was made.