Lymphoma, T-Cell, Cutaneous/pathology; Panniculitis/pathology; Skin Neoplasms/pathology; Subcutaneous Fat/pathology; T-Lymphocytes, Cytotoxic/pathology; Adolescent; Adult; Aged; CD4 Antigens/analysis; CD56 Antigen/analysis; CD8 Antigens/analysis; Child; China; Female; Gene Expression Regulation, Neoplastic; Gene Rearrangement, T-Lymphocyte; Genes, T-Cell Receptor; Herpesvirus 4, Human/isolation & purification; Humans; Immunohistochemistry; Immunophenotyping; In Situ Hybridization; Ki-1 Antigen/analysis; Lymphoma, T-Cell, Cutaneous/classification; Lymphoma, T-Cell, Cutaneous/genetics; Lymphoma, T-Cell, Cutaneous/immunology; Lymphoma, T-Cell, Cutaneous/therapy; Lymphoma, T-Cell, Cutaneous/virology; Male; Middle Aged; Neoplasm Invasiveness; Panniculitis/genetics; Panniculitis/immunology; Panniculitis/virology; Polymerase Chain Reaction; Skin Neoplasms/classification; Skin Neoplasms/genetics; Skin Neoplasms/immunology; Skin Neoplasms/therapy; Skin Neoplasms/virology; Subcutaneous Fat/immunology; Subcutaneous Fat/virology; T-Lymphocytes, Cytotoxic/immunology; T-Lymphocytes, Cytotoxic/virology; Treatment Outcome; World Health Organization