BMJ Case Reports 2018; doi:10.1136/bcr-2017-223543
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Sternocleidomastoid tumour in neonate: fibromatosis colli

  1. Fernanda Marta Gomes2
  1. 1Department of Pediatrics, Hospital de Braga, Braga, Portugal
  2. 2Department of Radiology, Hospital de Braga, Braga, Portugal
  1. Correspondence to Dr Joana Cunha Oliveira,{at}
  • Accepted 22 December 2017
  • Published 10 January 2018


We report a case of a 4-week-old female neonate who was admitted to the hospital for a anterior right lump of the neck, perceived by his mother the day before. The mother also noticed a preferential tilting of the head towards right. He was an otherwise full-term healthy baby, with a history of instrumented delivery. There was no fever, trauma or respiratory symptoms/signs. Family history was irrelevant. On examination, the neck swelling was a small firm, partially mobile, no warm on touch and apparently painless mass, with approximately 1.5–2 cm soft tissue mass, attached to the right sternocleidomastoid muscle. There was no restriction of neck movements. Ultrasonography (USG) revealed a 13 mm …

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