association of systemic anaplastic large cell lymphoma and active toxoplasmosis in a child

Introduction: anaplastic large cell lymphoma is a subset of non-hodgkin lymphoma and an unusual disease in children. case presentation: herein we have reported a 7- year- old girl with a large necrotic skin ulcer on the chest caused by systemic form of anaplastic large-cell lymphoma and simultaneous active toxoplasmosis diagnosed by pcr on lymph node specimen. there were few reports showing a role for toxoplasma infection to cause some malignancies such as lymphoma in adults. conclusions: based to our knowledge, this has been the first report of simultaneous systemic anaplastic large cell lymphoma and active toxoplasmosis, documented by positive pcr on tissue biopsy in a child. this case report has suggested more attention to the accompanying toxoplasma gondii infection as a probable cause of some types of lymphomas.