Transretinal biopsy technique for cytogenetic phenotyping of posterior uveal melanoma

Javier Elizalde
Cytogenetic phenotyping is a world-wide accepted procedure in ocular oncology to know the risk of metastatic disease of uveal melanoma. We describe our effective and safe vitreoretinal surgical technique to obtain a sample of melanomas located posterior to the equator. A three-port 25-gauge microcannulae system through the pars plana is used to insert a vitrector or a 27-gauge needle to obtain the tissue, depending on the size of the tumor. Although minimal bleeding may be...
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