RT Book, Section A1 Jones, Yemisi A1 Hanisch, Benjamin A1 Singh, Nalini A2 Shah, Samir S. A2 Kemper, Alex R. A2 Ratner, Adam J. SR Print(0) ID 1157321232 T1 Cervical Lymphadenitis T2 Pediatric Infectious Diseases: Essentials for Practice, 2e YR 2019 FD 2019 PB McGraw-Hill Education PP New York, NY SN 9781259861536 LK accesspediatrics.mhmedical.com/content.aspx?aid=1157321232 RD 2024/10/03 AB Lymphadenopathy, or enlarged lymph nodes, may be the result of acute or chronic inflammation, or infiltration via malignant cells. A lymph node measuring greater than 10 mm in longest diameter is generally considered enlarged. There are several exceptions to this rule: (1) epitrochlear nodes measuring more than 5 mm are abnormal; (2) inguinal nodes measuring more than 10–15 mm are abnormal; and (3) palpable supraclavicular, iliac, or popliteal nodes are always considered abnormal. Palpable lymph nodes are common in otherwise healthy infants and children as a result of reactive hyperplasia.1