Immune System

{"ops":[{"insert":"Diagnosis and reasoning"},{"insert":"\n","attributes":{"header":1}},{"insert":"The pediatric patient who presents with lymphadenopathy is a common clinical problem with a wide differential diagnosis.\n\nWhen evaluating these patients, the first point to keep in mind is that lymph nodes can be palpated in many healthy children (especially between the ages of 8 to 12).\n\nThus, it is only nodes which are \u003E1 cm in size (or \u003E1.5 cm in the case of inguinal lymph nodes) which are considered to be enlarged (as in this child\u0027s case).\n\nWhere lymphadenopathy is definitely present, a good next step is to determine if this is generalized or localized, based on the regions involved; the former is said to be present if two or more nodal groups are involved.\n\nExamination of this child shows that the right axilla, right posterior cervica"}]}

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