Epidermal tumors -- Neoplastic and pseudoneoplastic lesions of the hair follicles -- Tumors and tumor-like conditions with predominantly sebaceous differentiation -- Neoplasms and pseudoneoplastic proliferations of the sweat glands, and primary neuroendocrine (Merkel cell) carcinoma -- Metastatic neoplasms -- Fibrous tissue tumors -- Vascular tumors and pseudotumors -- Tumors and tumor-like conditions showing neural, nerve sheath, and adipocytic differentiation -- Tumors of muscle, cartilage, and bone -- Histiocytic proliferations -- Plasmacellular infiltrative disorders -- Cutaneous mastocytosis -- Lymphoid infiltrates, lymphoma, and hematopoietic proliferations.