Histopathologic assessment of depth of follicular invasion of squamous cell carcinoma (SCC) in situ (SCCis): Implications for treatment approach - 15/01/16
, Jennifer M. McNiff, MD a, Alicia J. Cool, MD a, Sumaira Z. Aasi, MD b, Allison M. Hanlon, MD, PhD a, David J. Leffell, MD aAbstract |
Background |
Squamous cell carcinoma in situ (SCCis) has been reported to involve the hair follicle epithelium. Deep follicular invasion is often cited as a cause of treatment failure.
Objective |
We sought to define the frequency and the depth of hair follicle invasion by SCCis.
Methods |
The study included both a retrospective review of intraoperative pathology specimens from 42 SCCis cases treated with Mohs micrographic surgery and a prospective evaluation of serially sectioned SCCis tissue from 12 additional patients. Pathology specimens were analyzed for follicular invasion of SCCis.
Results |
SCCis invasion of the superficial hair follicle infundibulum was observed in 61.3% to 87.5% of cases in the 2 cohorts, whereas invasion of the isthmus and lower follicle was observed in only 8.3% to 12.5% of cases. In most tumors the depth of follicular invasion was comparable with the thickness of the surrounding epidermis. The maximum observed depth of follicular invasion was 0.82 mm.
Limitations |
The study was performed on a limited number of cases referred for surgery at a single institution.
Conclusions |
Although SCCis invasion of the upper hair follicle infundibulum is common, deep invasion below the level of the surrounding epidermis is rare. This may have implications for optimal therapy of this condition.
Le texte complet de cet article est disponible en PDF.Key words : adnexal structure, Bowen disease, cutaneous, depth, hair follicle, histology, Mohs micrographic surgery, pathology, sebaceous gland, squamous cell carcinoma in situ
Abbreviations used : ICC, SCC, SCCis
Plan
| Funding sources: None. |
|
| Conflicts of interest: None declared. |
|
| Interim results of this study were presented as abstracts at the American College of Mohs Surgery Annual Meetings on April 29, 2011 in Las Vegas, NV and on May 2, 2013 in Washington, DC. The complete study has never been presented before. |
Vol 74 - N° 2
P. 356-362 - février 2016 Retour au numéro
Article précédent
- Microneedling in skin of color: A review of uses and efficacy
- Brandon E. Cohen, Nada Elbuluk
- Thalidomide for the treatment of chronic refractory pruritus
- Divya Sharma, Shawn G. Kwatra
Bienvenue sur EM-consulte, la référence des professionnels de santé.
L’accès au texte intégral de cet article nécessite un abonnement.
Déjà abonné à cette revue ?