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An international survey about nail histology processing techniques.
Journal of Cutaneous Pathology 2017 September
BACKGROUND: There are limited data on nail histopathology techniques. The objective of this study was to examine nail histopathology techniques currently in use internationally.
METHODS: An online survey was sent to the European Nail Society and Council for Nail Disorders during 2015-2016.
RESULTS: There were 57 respondents, from twenty countries comprising dermatologists, podiatrists and pathologists. Specimens were unmarked or marked using ink or a suture and fixed in 10% formalin, from 6 to 48 hours before embedding in paraffin wax (90% [17/19]), liquid nitrogen (frozen section, 1/19) and 2-hydroxyethylmethacrylate (plastic, 1/19). Nail softening was undertaken by 71% (17/24) of respondents for 6 to 48 hours using Mollifex Gurr (12.5%, 3/24), 10% potassium hydroxide solution (12.5%, 3/24) or 10% potassium thioglycolate cream (12.5%, 3/24). Section thickness was 4 to 9 µm (62.5%), using a steel microtome (92%,12/13) on glass slides (91.6%, 11/12). Hematoxylin and eosin (H&E) was routine for all biopsies and Periodic acid Schiff (PAS) for fungus. The favored stain for differentiating melanin and hemoglobin was Fontana-Masson (60%, 6/10). For pigmented lesions, Melan-A was always employed by all respondents (9/9).
CONCLUSION: Nail histopathology processing has some small variations from normal skin processing.
METHODS: An online survey was sent to the European Nail Society and Council for Nail Disorders during 2015-2016.
RESULTS: There were 57 respondents, from twenty countries comprising dermatologists, podiatrists and pathologists. Specimens were unmarked or marked using ink or a suture and fixed in 10% formalin, from 6 to 48 hours before embedding in paraffin wax (90% [17/19]), liquid nitrogen (frozen section, 1/19) and 2-hydroxyethylmethacrylate (plastic, 1/19). Nail softening was undertaken by 71% (17/24) of respondents for 6 to 48 hours using Mollifex Gurr (12.5%, 3/24), 10% potassium hydroxide solution (12.5%, 3/24) or 10% potassium thioglycolate cream (12.5%, 3/24). Section thickness was 4 to 9 µm (62.5%), using a steel microtome (92%,12/13) on glass slides (91.6%, 11/12). Hematoxylin and eosin (H&E) was routine for all biopsies and Periodic acid Schiff (PAS) for fungus. The favored stain for differentiating melanin and hemoglobin was Fontana-Masson (60%, 6/10). For pigmented lesions, Melan-A was always employed by all respondents (9/9).
CONCLUSION: Nail histopathology processing has some small variations from normal skin processing.
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