BMJ 2008; 336 doi: https://doi.org/10.1136/bmj.39506.475961.80 (Published 06 March 2008) Cite this as: BMJ 2008;336:566
  1. Elmuhtady Said, senior clinical fellow ,
  2. Elaine Linney, endoscopy nurse
  1. 1department of gastroenterology, Barnsley District General Hospital, Barnsley S75 2EP
  1. drsaid{at}doctors.org.uk

A 70 year old woman underwent colonoscopy for abdominal pain. Findings during the procedure showed extensive dark brown pigmentation of the mucosa throughout the colon …

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