“…Differentiation is required among diseases with scleroderma‐like symptoms, including paraneoplastic dermal lesions, mucinosis, metabolic abnormalities, connective tissue disease, and lesions caused by extrinsic factors such as silicone (1), tryptophan (2), vinyl chloride (3), toxic oil (4), and bleomycin (5). Sclerodermatous dermal lesions accompanying chronic GVHD were diagnosed based on the onset subsequent to bone marrow transplant, the lack of malignant tumors or prior history of exposure to chemical substances, and the absence of mucin deposition noted in histopathologic studies.…”