A large helmet-shaped proliferating trichilemmal tumor of the scalp: Is definitive radiotherapy the treatment? A case report.
Proliferating trichilemmal tumor
Radical
Radiotherapy
Journal
Journal of the Egyptian National Cancer Institute
ISSN: 2589-0409
Titre abrégé: J Egypt Natl Canc Inst
Pays: England
ID NLM: 9424566
Informations de publication
Date de publication:
11 Dec 2019
11 Dec 2019
Historique:
received:
08
08
2019
accepted:
12
11
2019
entrez:
7
5
2020
pubmed:
7
5
2020
medline:
30
10
2020
Statut:
epublish
Résumé
Benign proliferating trichilemmal tumors (PTTs) are a rare entity that arises from the outer root sheath of a hair follicle. They range from a benign PTT that recurs locally to the more aggressive malignant PTT that, in addition to recurring locally, has the potential for metastatic spread. However, as a group, PTTs are slow growing and amenable to surgery. To the best of our knowledge, radical radiotherapy without surgery has been used in only one case in an elderly male patient with good oncological and cosmetic results. We present a case of a young unmarried female with a disfiguring PTT of the scalp not amenable to surgery treated successfully with radiotherapy providing good cosmesis. Volumetric modulated arc therapy was used to treat this patient with a dose of 50 Gy in 25 fractions over 5 weeks. A theoretical risk of malignant transformation was explained to the patient. The patient has maintained good cosmesis over the last 12 months with no signs of re-growth. In patients with PTT not amenable to surgery, radiotherapy may be an effective alternative providing local control and good cosmesis.
Sections du résumé
BACKGROUND
BACKGROUND
Benign proliferating trichilemmal tumors (PTTs) are a rare entity that arises from the outer root sheath of a hair follicle. They range from a benign PTT that recurs locally to the more aggressive malignant PTT that, in addition to recurring locally, has the potential for metastatic spread. However, as a group, PTTs are slow growing and amenable to surgery. To the best of our knowledge, radical radiotherapy without surgery has been used in only one case in an elderly male patient with good oncological and cosmetic results.
CASE PRESENTATION
METHODS
We present a case of a young unmarried female with a disfiguring PTT of the scalp not amenable to surgery treated successfully with radiotherapy providing good cosmesis. Volumetric modulated arc therapy was used to treat this patient with a dose of 50 Gy in 25 fractions over 5 weeks. A theoretical risk of malignant transformation was explained to the patient. The patient has maintained good cosmesis over the last 12 months with no signs of re-growth.
CONCLUSION
CONCLUSIONS
In patients with PTT not amenable to surgery, radiotherapy may be an effective alternative providing local control and good cosmesis.
Identifiants
pubmed: 32372190
doi: 10.1186/s43046-019-0007-y
pii: 10.1186/s43046-019-0007-y
doi:
Types de publication
Case Reports
Journal Article
Langues
eng
Sous-ensembles de citation
IM