- blue color blindness [DOID:11661]
A color blindness that is characterized by a selective deficiency of blue vision, has_material_basis_in autosomal dominant inheritance of a mutation in the OPN1SW gene and is associated with a deficiency or absence of blue-sensitive cone photoreceptor function.
- blue drum syndrome [DOID:9736]
A acute transudative otitis media involving thick, viscid and mucuslike fluid effusion due to which the drum appears blue in color.
- cerebral neuroblastoma [DOID:4164]
A brain cancer that is characterized by small, round and blue cells with rosette patterns on histology, that has_material_basis_in abnormally proliferating cells and derives_from precursor cells called blast cells.
- osteogenesis imperfecta type 1 [DOID:0110334]
An osteogenesis imperfecta that is characterized by bone fragility and blue sclerae and has_material_basis_in dominantly inherited mutations in the COL1A1 gene on chromosome 17q21.33 or the COL1A2 gene on chromosome 7q21.3.
- skin angiosarcoma [DOID:4517]
An angiosarcoma and hemangioma of skin and malignant skin vascular tumor and sarcoma of skin that is located_in the skin and results_in an enlarged bruise (a blue-black nodule) and an unhealed ulceration.
- Van Maldergem syndrome [DOID:0060238]
A syndrome characterized by facial abnormalities such as telecanthus, epicanthus, broad flattened nose, large inverted W-shaped mouth and malformed ears, malformed extremities such as camptodactyly, clinodactyly, interdigital webbing and joint hyperlaxity and mental retardation.