Lymphomatoid papulosis(LyP) is a chronic recurrent self-healing condition, with histological features suggestive of a malignant lymphoma. LyP usually develops in adults and lesions occur episodically over the trunk and limbs. Lymphomatoid papulosis has been reported only rarely in children. Furthermore localized and regional forms of lymphomatoid papulosis have been described very rarely. We report a case of CD30(Ki-1) positive LyP developed in childhood who had recurrent skin lesions confined to the face.
Adult ; Child ; Extremities ; Humans ; Lymphoma ; Lymphomatoid Papulosis* ; Skin

Amyopathic dermatomyositis is diagnosed when the biopsy-confirmed cutaneous lesions of dermatomyositis are present for longer than 2 years in the absence of muscle weakness, elevated muscle enzymes, and the history of immunosuppressive drug therapy and ingestion of drugs such as hydroxyurea that can produce dermatomyositis-like cutaneous hypersensitivity changes. We report a 36-year-old woman with a 3-year history of typical skin features of dermatomyositis with no evidences of muscle involvement.
Adult ; Dermatomyositis* ; Drug Therapy ; Eating ; Female ; Humans ; Hydroxyurea ; Hypersensitivity ; Muscle Weakness ; Skin

Congenital leukemia is a rare disease developing within the first 4 to 6 weeks of life, whose natural history is quite different from that of childhood and adult leukemia. Leukemia cutis occurs in 25% to 30% of infants with congenital leukemia and is more frequently associated with acute myeloid leukemia than acute lymphocytic leukemia. We report a case of congenital leukemia cutis in which a walnut-sized, slightly erythematous, dome-shaped tumor that had developed at left frontal area since birth was confirmed by skin biopsy. A review and analysis of Korean literature pertaining specially to leukemia cutis in congenital leukemia is presented along with the report of an additional case.
Adult ; Biopsy ; Humans ; Infant ; Leukemia* ; Leukemia, Myeloid, Acute ; Natural History ; Parturition ; Precursor Cell Lymphoblastic Leukemia-Lymphoma ; Rare Diseases ; Skin