@article{oai:jichi-ir.repo.nii.ac.jp:00000531,
 author = {Tanno, Keisuke and Minato, Kyosuke and Tsunoda, Sumiko and Chiba, Emiko and Akahane, Keiko and Okochi, Tomohisa and Hamamoto, Kouhei and Shirai, Katsuyuki and Tanaka, Osamu},
 journal = {自治医科大学紀要, Jichi Medical University Journal},
 month = {Mar},
 note = {A tumoral presentation of amyloidosis is uncommon in soft tissue. We here report a case of bulky amyloidomas on bilateral buttocks in a patient with osteoarthropathy of the hips. The 66-year-old patient’s history included 26 years of hemodialysis along with osteoarthropathy of the hips and a pathological fracture of the femoral neck.
CT showed ill-defined bulky masses with a slightly higher density compared with that of muscles in the subcutaneous regions of the bilateral buttocks. Moderate contrast enhancement of the lesions was revealed. The masses contained diffuse tiny fat depositions and psammomatous calcifications, suggestive of amyloid deposition. On MRI, the masses demonstrated markedly hypointense signals on T2-weighted image, consistent with amyloidosis. Characteristic scattered spots of high intensity, suggesting fat or microcalcifications, were noted within the masses on T1-weighted image.
Mass-like synovial thickening was observed in the bilateral hip joints with discrete marginal erosions of the femoral heads. The CT and MRI features of the hips were compatible with typical amyloid osteoarthropathy.},
 pages = {35--39},
 title = {Amyloidomas on the bilateral buttocks associated with osteoarthropathy of the hips：a case report focusing on CT and MRI findings},
 volume = {41},
 year = {2019}
}