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Calibrated needle for ophthalmic fine needle aspiration biopsy
  1. David E Pelayes1,
  2. Jorge O Zárate2,
  3. Charles V Biscotti3,
  4. Arun D Singh4
  1. 1Department of Ophthalmology and Ophthalmic Research, Laboratory and Vision Sciences, University of Buenos Aires, Argentina
  2. 2Department of Pathology, University of Buenos Aires, Argentina
  3. 3Department of Anatomic Pathology, Cleveland Clinic Foundation, Cleveland, Ohio, USA
  4. 4Department of Ophthalmic Oncology, Cole Eye Institute, Cleveland Clinic Foundation, Cleveland, Ohio, USA
  1. Correspondence to Dr Arun D Singh, Department of Ophthalmic Oncology, Cole Eye Institute (i3-129), Cleveland Clinic Foundation, 9500 Euclid Avenue, Cleveland, Ohio 44195, USA; singha{at}ccf.org

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In a great majority of cases, uveal tumours are diagnosed and treated based solely upon clinical examination and ancillary diagnostic studies such as ultrasonography and angiography.1 In general, diagnostic fine needle aspiration biopsy (FNAB) is limited to situations presenting as a diagnostic dilemma such as differentiation between an amelanotic uveal melanoma and a metastatic uveal tumour.2–5 The other major indication for ophthalmic FNAB is for prognostication purposes of uveal melanoma being treated with radiation therapy.6

Most ophthalmic surgeons have used available needles without customisation ranging in size from 22 gauge (G) to 30G, with the 25G needle being the most commonly used.2 ,7 , …

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