title: Amyloid tumor. A clinicopathologic study of four cases.
abstract: Four examples of amyloid tumors were studied to determine whether there was an association with myelomatosis. Three patients had follow-up examinations of 12 years, 9 years, and 2 1/2 years, respectively. A local recurrence developed in one patient and a second lesion developed in this patient and in one other who also had a transient monoclonal 7S globulin peak. In spite of these findings, none of our patients developed myelomatosis. A study of the scanty literature on amyloid tumors reveals that only patients with lesions of the lung and urinary bladder have had long-term follow-up. They have invariably remained free of disease. Several reports of bone lesions have inferred that amyloid tumors occurring here signify solitary myeloma despite a lack of follow-up confirmation. Our longest surviving patient developed two bone lesions over a 12-year period without developing myelomatosis. Our findings lead us to conclude that there is little evidence to regard the presence of an amyloid tumor at any site as a manifestation of solitary myeloma or myelomatosis.
mesh_terms: D000009:Abdominal Muscles / Q000473:pathology; D000328:Adult; D000368:Aged; D000686:Amyloidosis / Q000473:pathology*; D001859:Bone Neoplasms / Q000473:pathology*; D001943:Breast Neoplasms / Q000473:pathology*; D005260:Female; D006801:Humans; D007264:Inguinal Canal / Q000473:pathology; D008223:Lymphoma / Q000473:pathology*; D008297:Male; D008875:Middle Aged; D009101:Multiple Myeloma / Q000209:etiology; D009362:Neoplasm Metastasis; D009364:Neoplasm Recurrence, Local; D010954:Plasmacytoma / Q000473:pathology; D012540:Scapula / Q000473:pathology; D013977:Tibia / Q000473:pathology