PURPOSE: Influenza B-associated myositis is an infrequent and poorly known complication of influenza B virus infection in children. The aim of this study was to describe the clinical and laboratory manifestations, diagnosis, and outcomes of influenza B-associated myositis in Korean children. METHODS: A retrospective analysis was conducted in patients aged <16 years who had been diagnosed with influenza B-associated myositis at the Catholic University Bucheon Saint Mary's Hospital between April 2010 and May 2010. RESULTS: Overall, 16 cases were analyzed. Influenza B-associated myositis typically occurred in preschool-aged children with a 3:1 male predominance. The mean age was 4.6 years (range, 3 to 7 years). The median interval between onset of influenza infection and onset of influenza B-associated myositis was 3 days (range, 1 to 7 days). Only the calf muscles were involved in all patients. Blood creatine phosphokinase concentration was elevated in most patients. Median duration to clinical recovery was 3 days (range, 1 to 4 days). No patient had rhabdomyolysis, renal failure, or related sequelae. All patients had a favorable outcome without administration of antiviral drugs. CONCLUSION: Clinical and laboratory findings of influenza B-associated myositis are very characteristic and allow a rapid diagnosis during the influenza season. Outcomes of influenza B-associated myositis are good with only proper supportive treatment.
Aged ; Child ; Creatine Kinase ; Humans ; Influenza B virus ; Influenza, Human ; Male ; Muscles ; Myositis ; Renal Insufficiency ; Retrospective Studies ; Rhabdomyolysis ; Saints ; Seasons

Henoch-Schonlein purpura(anaphylactoid purpura) is a necrotizing vasculitis of small vessels in which systemic manifestation include palpable purpura on the lower extremities and buttocks due to leukocytoclastic vasculitis of dermal vessels; arthralgia of large joints, usually the knees and ankles; gastronitestinal involvement with colic and bleeding; and renal ievolvement, usually with a focal necrotizing glomerulonephritis. Gastrointestinal involvement occurs in about two thirds of all pediatric cases and in about,one third of adult cases, Any bowel segment may be involved, but the jejunum and ileum are most frequently affected. With a brief review of the literature, we report a case of H-S purpura involving stomach and duodenum.
Adult ; Ankle ; Arthralgia ; Buttocks ; Colic ; Duodenum ; Glomerulonephritis ; Hemorrhage ; Humans ; Ileum ; Jejunum ; Joints ; Knee ; Lower Extremity ; Purpura* ; Stomach ; Upper Gastrointestinal Tract* ; Vasculitis

T-cell lymphoma is heterogeneous with respect to clinical presentation, course, and morphology, but it is rarely associated with sinus histiocytosis with massive lymphadenopathy (Rosai-Dorfman Syndrome). We report a case of T-cell lymphoma with Rosai-Dorfman Syndrome like feature in a 31-years-old woman who presented severe non-immune hemolytic anemia and massive retroperitoneal and cervical lymphadenopathy. Her cervical lymph node biopsy revealed histiocytic infiltration showing erythrophagocytosis without marked fibrosis in the capsular and pericapsular areas and distension of sinusoids. After 6 cycles of CHOP (Cyclophosphamide, Adriamycin, Vincristine, and Prednisolone) chemotherapy, cervical and retroperitoneal lymphadenopathy was completely disappeared and according to the resolution of lymphadenopathy hemolytic anemia was also improved.
Anemia, Hemolytic ; Biopsy ; Doxorubicin ; Drug Therapy ; Female ; Fibrosis ; Histiocytosis, Sinus ; Humans ; Lymph Nodes ; Lymphatic Diseases ; Lymphoma, T-Cell* ; T-Lymphocytes* ; Vincristine