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Glossary Transverse Sectioning

cutting a sample perpendicular to its length for examination

Transverse sectioning refers to cutting a sample, such as a hair strand or tissue, perpendicular to its length. This method allows for the examination of the internal structure and layers of the sample, providing detailed insights into its composition and any potential abnormalities. For instance, in hair analysis, transverse sectioning can reveal the condition of the hair cortex and medulla, which are crucial for diagnosing issues like alopecia.

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research Contrast enhanced phototrichogram (CE-PTG): an improved non-invasive technique for measurement of scalp hair dynamics in androgenetic alopecia–validation study with histology after transverse sectioning of scalp biopsies.

12 citations , August 2001 in “PubMed”

This study found that contrast enhanced phototrichogram (CE-PTG) significantly improved detection of various hair types and growth stages in androgenetic alopecia compared to standard PTG and was comparable to biopsy analysis.

research The Transverse Anatomy of Androgenic Alopecia

42 citations , December 1990 in “The Journal of Dermatologic Surgery and Oncology”

This study found decreased hair density and altered follicular architecture in the balding frontal scalp of patients with androgenic alopecia, with increased vellus hairs noted.

research Diagnostic accuracy measures for vertical and transverse scalp biopsies in cicatricial and non-cicatricial alopecias

5 citations , November 2017 in “Dermatologica Sinica”

In this study, transverse sectioning of scalp biopsy samples showed higher diagnostic accuracy than vertical sectioning for noncicatricial alopecia, although both techniques are important for accurate diagnosis.

research The current state of play in the histopathologic assessment of alopecia: two for one or one for two?

12 citations , February 2013 in “Journal of Cutaneous Pathology”

This review evaluates various biopsy protocols for alopecia diagnosis and discusses the authors' experience with the St John's protocol but presents no new clinical findings.

research Non-scarring Alopecias in Iranian Patients: A Histopathological Study With Hair Counts.

2 citations , January 2018 in “DOAJ (DOAJ: Directory of Open Access Journals)”

In this study on Iranian patients with non-scarring alopecia, researchers found that androgenetic alopecia was the most common subtype, with perifollicular inflammation observed more in males. They reported that transverse sectioning is generally sufficient for diagnosis, but combining with vertical sectioning provides more comprehensive information.

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