BMJ 2007; 334 doi: https://doi.org/10.1136/bmj.39066.383750.BE (Published 04 January 2007) Cite this as: BMJ 2007;334:50
  1. Suparna Dasgupta, specialist registrar (suparnadasgupta{at}hotmail.com)1,
  2. Ula El-Kafrawy, consultant1,
  3. Matthew Harries, specialist registrar2
  1. 1department of neonatology, Salford Royal Hospital NHS Trust, Hope Hospital, Salford M6 8HD
  2. 2department of dermatology, Salford Royal Hospital NHS Trust

    A postmature baby had poor cardiotocogram traces, a cord pH of 6.86, and a base excess of −17.8. He had also aspirated meconium and needed ventilation. On day 8 we noted firm, fluctuant violaceous nodules over his back, buttocks, and thighs, which resolved by 3 months. Subcutaneous fat necrosis of the newborn is an uncommon acute hypodermatitis that affects full term or postmature babies during the first 6 weeks of life. Predisposing factors are perinatal asphyxia, birth trauma, aspiration of meconium, and hypoxia. Complications are hypoglycaemia, anaemia, thrombocytopenia, and hypercalcaemia. The condition is usually self limiting and resolves without scarring within weeks to months.

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