When does necrotizing enterocolitis (NEC) typically occur?

Updated: Dec 27, 2017
  • Author: Shelley C Springer, JD, MD, MSc, MBA, FAAP; Chief Editor: Muhammad Aslam, MD  more...
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NEC typically occurs in the second to third week of life in the infant who is premature and has been formula fed. Although various clinical and radiographic signs and symptoms are used to make the diagnosis, the classic clinical triad consists of abdominal distension, bloody stools, and pneumatosis intestinalis. Occasionally, signs and symptoms include temperature instability, lethargy, or other nonspecific findings of sepsis. (See Presentation and Workup.)

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