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Diseases

Genetic and Rare Diseases Information Center (GARD)

Proliferating trichilemmal cyst


Other Names for this Disease
  • Proliferating pilar cyst
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Overview

Proliferating trichilemmal tumor (PTT) is a benign tumor originating from the hair follicle. Although it is a benign tumor, PTT may be locally aggressive and in very rare cases the tumor may become malignant. In most cases there is only one lesion and occur in elderly women.[1][2] The tumor is not painful but sometimes they may grow very large and pressure and damage the skin around it resulting in wounds and foul-smelling discharge. About 90% of the cases are on the scalp, but they have also been found on the forehead, nose, back, chest, abdomen, buttocks, elbow, wrist and genitalia.[3] Treatment is with surgery removing the lesion. Prognosis is good in most cases but the patient should be followed closely after surgery.[2]
Last updated: 1/6/2016

References

  1. Proliferating trichilemmal cyst. DermnetNZ. 2016; http://www.dermnetnz.org/lesions/proliferating-trichilemmal-cyst.html.
  2. Vatanchi M. Proliferating Pilar Tumor Treatment & Management. Proliferating Pilar Tumor Treatment & Management.. Medscape Reference. September 16, 2015; http://emedicine.medscape.com/article/1060682-treatment.
  3. Goyal S, Jain BB, Jana S & Bhattacharya SK. Malignant Proliferating Trichilemmal Tumor. Indian J Dermatol. January, 2012; 57(1):50–52. http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3312659/.
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In Depth Information

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Other Names for this Disease
  • Proliferating pilar cyst
See Disclaimer regarding information on this site. Some links on this page may take you to organizations outside of the National Institutes of Health.