Indexed with PubMed and Science Citation Index (E) 
Users online: 1816 
     Home | Feedback | Login 
About Current Issue Archive Ahead of print Search Instructions Online Submission Subscribe What's New Contact  
  Navigate here 
   Next article
   Previous article 
   Table of Contents
 Resource links
   Similar in PUBMED
    Search Pubmed for
    Search in Google Scholar for
  Related articles
   [PDF Not available] *
   Citation Manager
   Access Statistics
   Reader Comments
   Email Alert *
   Add to My List *
* Registration required (free)  

  In this article
   Case Report
   Article Figures

 Article Access Statistics
    PDF Downloaded0    
    Comments [Add]    

Recommend this journal


Year : 1996  |  Volume : 62  |  Issue : 1  |  Page : 47-48

Follicular infundibulum tumour presenting as cutaneous horn

Correspondence Address:
M Jayaraman

Login to access the Email id

Source of Support: None, Conflict of Interest: None

PMID: 20947970

Rights and PermissionsRights and Permissions


Tumour of follicular infundibulum is an organoid tumour with a plate like growth attached to the epidermis with connection from the follicular epithelium. We are reporting such a case unusually presenting as cutaneous horn.

Keywords: Follicular infundibulum tumour, Eccrine poroma, Organoid tumour

How to cite this article:
Jayaraman M, Janaki V R, Yesudian P. Follicular infundibulum tumour presenting as cutaneous horn. Indian J Dermatol Venereol Leprol 1996;62:47-8

How to cite this URL:
Jayaraman M, Janaki V R, Yesudian P. Follicular infundibulum tumour presenting as cutaneous horn. Indian J Dermatol Venereol Leprol [serial online] 1996 [cited 2019 Dec 8];62:47-8. Available from: http://www.ijdvl.com/text.asp?1996/62/1/47/4308

  Introduction Top

Tumour of follicular infundibulum is an unusual epithelial, organoid tumour, anologous anatomically to eccrine poroma.[1] The term tumour of follicular infundibulum is given by Mehregan and Butler to a benign hyperplastic lesion that extends from the follicular infundibulum as an epithelial plate connected to the overlying epidermis.

  Case Report Top

A 55-year-old woman presented with multiple horny excrescences over the frontoparietal region of the scalp of 2 years duration [Figure:l]. The horns on separation by the hand showed matted hairs and scales and the base was tender to palpate. On applying topical keratolytics, the horny excrescence got separated leaving behind a depigmented bald plaque. The plaque showed multiple follicular papules of varying sizes.

Clinical differential diagnosis of discoid lupus erythematosus presenting as horn and actinic porokeratosis were entertained.

Excision biopsy of one of the lesions and serial sectioning showed subepidermal proliferation of epithelial cells as a cord attached to the overlying epidermis by a pedicle and a small hair follicle entered the plate like growth and became unrecognisable [Figure - 2]. It was diagnosed as tumour of follicular infundibulum.

  Discussion Top

The majority of the lesions have been solitary,[2] but in 3 cases multiple lesions were present.[3] In all the cases lesions were asymptomatic except hypopigmentation. But our patient presented with alopecia and depigmentation with multiple horns over the scalp. Findlay et al[4] reported one case with follicular plug, warty patches and scars over the head and neck.

The histopathology of the tumour of the follicular infundibulum is characterised by a plate like growth connected by pedicles to the overlying epidermis. Mehregan and Butler[1] demonstrated the connection of this tumour to the follicular external sheath at infundibular level. Dense brush like elastic tissue has been reported around the tumoral stroma.[5] To our knowledge, no cutaneous horn caused by tumour of follicular infundibulum is so far reported.

  References Top

1.Mehregan AH, Butler JD. A tumor of follicular infundibulum: report of a case. Arch Dematol 1961;83:924-7.  Back to cited text no. 1  [PUBMED]  
2.Kossard, Kocsard E, Poyzer KG. Infundibulomatosis. Arch Dermatol 1983;119:267-8.  Back to cited text no. 2    
3.Kossard S, Finley AG, Poyzerk, et al. Eruptive infundibulomas. J Am Acad Dermatol 1989;21:361-6.  Back to cited text no. 3    
4.Findlay GH. Multiple infundibular tumors of the head and neck. Br J Dermatol 1989;120:633-8.  Back to cited text no. 4  [PUBMED]  
5.Mehregan AH. Infundibular tumors of the skin. J Int Pathol 1984;11:387-95.  Back to cited text no. 5    


[Figure - 1], [Figure - 2]


Print this article  Email this article
Previous article Next article


Online since 15th March '04
Published by Wolters Kluwer - Medknow