A 39-year-old male was referred to our hospital because of mediastinal tumor suspected. During preoperative examinations fever, hepatomegaly and leukocytosis appeared, and was diagnosed as acute lymphoblastic leukemia on hematological examination.
Complete remission was induced with 6-MP and prednisolone. During complete remission remarked specific cutaneous and subcutaneous lesions of leukemia with meningeal leukemia and mediastinal tumor were noticed 4 times at sculp, face, conjunctiva palpebrae, neck, chest, back, and upper extremities.
Administrations of L-Asparaginase (400IU/kg/day) were very effective each 3 times but 4 th administration of L-Asparaginase could not improve the symptoms like above any more. He died of cerebral bleeding.
Statistical observations on specific cutaneous and subcutaneous lesions of autopsied leukemia recorded in the “Annual of the Autopsy Cases in Japan” during the years 1958 through 1967 were performed and the following results were obtained.
1) Total number of autopsied leukemias in Japan for 10 years was 4661 cases and type distribution was as follows; AML 2399 cases (51.6%), CML 607 cases (13.0%), ALL 251 cases (5.4%), MoL 215 cases (4.6%), CLL 79 cases (1.7%) and so on.
2) Specific leukemic skin involvements were obserbed in 106 cases (2.3% of total autopsied leukemias) including AML 44 cases (41.5%), CML 17 cases (16.0%), ALL 8 cases (7.6%) and MoL 8 cases (7.6%), respectively.
Incidence of specific cutaneous lesions in each type of leukemia was, however, as follows; MoL 3.7%, ALL 3.2%, CML 2.8%, AML 1.8%, and so on.
3) Leukemic infiltrations in the subcutaneous tissues were noticed in 27 cases (0.6% of total autopsied leukemias) which included AML 17 case (63.0%), chloroleukemia 4 cases (14.8%) and so on.
4) Leukemia cutis was more common in adults than in children in Japan.
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