Hiroaki Sato1，^3）, Shunsuke Nosaka^1）, Osamu Miyazaki1）, Mikiko Miyasaka^1）,
Yoshiyuki Okada^1）, Masayuki Kitamura^1）, Yoshiyuki Tsutsumi^1）, Kyoko Kashima^1）,
Hidekazu Masaki^1）, Masaaki Kumagai^2）, Koji Takahashi^3）, Tamio Aburano^3）

Department of Radiology, National Center for Child Health and Development^1）
Department of Pediatric Oncology, National Center for Child Health and Development^2）
Department of Radiology, Asahikawa Medical College^3）

　　We described the imaging features of four cases with acute myeloblastic leukemia (AML). In our cases, common findings were organomegaly, periportal infiltration and lymphadenopathy. Predominant findings individual each case were soft tissue tumors in the orbit and the facial subcutaneous region in case 1, multiple osteolytic lesions in case 2, organomegaly in the abdomen in case 3, and cerebral vascular lesions in case 4. We conclude that CT is useful for whole body screening, and MRI is effective in demonstrating musculoskeletal and central nervous system lesions for deciding a biopsy site or therapeutic strategy.

Keywords：Acute myeloblastic leukemia, CT, MRI, Children