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A difficult diagnosis confounded by laboratory error: lessons learned
  1. L J Christie1,
  2. L J Bayer2,
  3. R Smith3,
  4. M J Pippard4,
  5. D A Levison1
  1. 1
    Division of Medical Sciences, University of Dundee, Dundee DD1 9SY, UK
  2. 2
    East of Scotland Regional Genetics Service, Ninewells Hospital and Medical School, Dundee DD1 9SY, UK
  3. 3
    Department of Respiratory Medicine, Ninewells Hospital and Medical School, Dundee DD1 9SY, UK
  4. 4
    Division of Clinical and Population Science and Education, University of Dundee, Dundee DD1 9SY, UK
  1. Correspondence to Dr Lesley J Christie, Department of Pathology and Neuroscience, Ninewells Hospital and Medical School, University of Dundee, Dundee DD1 9SY, UK; l.y.christie{at}dundee.ac.uk

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A patient presented with breathlessness, weight loss and nocturnal sweating. Investigations revealed mild airway obstruction. Bronchoscopy was normal but CT scan demonstrated pleural thickening and a small area of shadowing within the right lung (fig 1). Pleural biopsy yielded lymphoid tissue in keeping with chronic lymphocytic leukaemia (CLL). Bone marrow (BM) examination was unremarkable. The patient was commenced on oral chlorambucil. At the multidisciplinary team meeting, given this unusual presentation, with apparent lack of nodal or BM involvement, a query over the diagnosis was raised. The pathology was reviewed; this showed two tissue cores, one consisting …

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