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    Abstract
    Introduction
    Case Report
    Discussion
    References

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CASE REPORT
Year : 2003  |  Volume : 69  |  Issue : 7  |  Page : 17-18

Diffuse neurofibroma


Department of Dermatology, Osmania General Hospital, Hyderabad 500 012

Correspondence Address:
F12, B8 HIG - II APHB Baghilingampally, Hyderabad 500 044

   Abstract 

A 30-year-old man presented with multiple nodules on the frontal region of scalp. Nodules varied from 2 to 4 cms in size, firm in consistency, not mobile, not tender. Oral mucous membrane and genitalia were normal. Systemic examination did not reveal any abnormality. He was provisionally diagnosed as a case of pilomatrixoma. However biopsy revealed the diagnosis of diffuse neurofibroma.

How to cite this article:
Rao A G, Lakshmi T S, Haritha S. Diffuse neurofibroma. Indian J Dermatol Venereol Leprol 2003;69, Suppl S1:17-8


How to cite this URL:
Rao A G, Lakshmi T S, Haritha S. Diffuse neurofibroma. Indian J Dermatol Venereol Leprol [serial online] 2003 [cited 2019 Nov 14];69, Suppl S1:17-8. Available from: http://www.ijdvl.com/text.asp?2003/69/7/17/5840



   Introduction Top

Diffuse Neurofibroma is a newly recognised distinct clinical entity. It is an unusual variant of neurofibroma. Dahl et al have first reported four cases of diffuse neurofibroma in young adults. All of them presented with hard sclerotic plaques with irregular surfce but with out protruding nodules.[1] The plaques varied from 3 cms to 8 cms in size.[2] Head and neck are the common sites of involvement.[2],[3],[4] Diffuse neurofibroma although benign in nature spreads superficially and has many ectatic blood vessels.[5] Histologically, the tumour consists of spindle cells with fibrillar cytoplasm and elongated nuclei.


   Case Report Top

A 30-year-old man presented with nodular swelling on the frontal region of scalp of 3 years duration. He was asymptomatic 3 years back, then he developed single nodule on sclerotic plaque involving frontal region. Gradually multiple nodules developed over a period of 1 year. Cutaneous examination revealed skin-coloured nodules in the frontal region of scalp. Nodules varied from 2 to 4 cms in size, firm in consistency, not mobile, not tender. Skin over the swelling was not pinchable. Mucous membrane and genitalia were normal. Systemic examination was also normal. He was provisionally diagnosed as a case of pilomatrixoma. However, Eccrine hidroadenoma, dermal cylindroma, eccrine spiroadenoma were also considered in the differential diagnosis. Routine laboratory investigations were within normal limits. X-ray skull did not show any bony involvement. Histopathology of skin biopsy revealed spindle cells with fibrillar cytoplasm and elongated nuclei, which confirmed the diagnosis of diffuse neurofibroma.


   Discussion Top

The reported case presented with hard sclerotic plaque with nodules on the frontal region. He was provisionally diagnosed as a case of pilomatrixoma. The differential diagnosis considered were eccrine hidroadenoma, dermal cylindroma and eccrine spiroadenoma. The diagnosis of diffuse neurofibroma was not entertained as the patient did not have cafe-au-lai macules and molluscum fibrosum. However biopsy form sclerotic plaque showed typical features of diffuse neurofibroma. Hence it is pertinent to include diffuse neurofibroma as one of the differential diagnosis when the patient presents with hard sclerotic plaque. Our patient of diffuse neurofibroma is a young adult which is similar to the case report by Dahl et al where all his patients were young adults.[1] All the four cases reported by Dahl et al presented with sclerotic plaques without protruding nodules. Scalp is the site of involvement in the reported case which is similar to the case report by chowdary et al.[3] Review of Indian literature failed to reveal any case report of diffuse neurofibroma. The case is reported for its rarity and its unique presentation. 

   References Top

1.Dahl MG, Malcolm AJ. Diffuse neurofibroma - unrecognised and undertreated? Br J Dermatol 1989; 121 (suppl 34):24.  Back to cited text no. 1    
2.Haper J, Genetics and genodermatosis : in Textbook of Dermatology Champion (RH, Buton JC, Ebling FJ, eds) 5th Edition; London : Black-well Scientific Publication 1992; 326-327.  Back to cited text no. 2    
3.Chowdary RP, Little BW Large vascular plexiform neurofibroma of scalp: Excision and coverage with free tissue transfer. Ann Plastic Surg 1990; 24:75-79.  Back to cited text no. 3    
4.de Varebeke SJ, Deschepper A, Hanben e; etal Subcutaneous diffuse neurofibroma of the neck J Laryngol Otol 1996; 110:182-184.  Back to cited text no. 4    
5.Coakley D, Allos MD. Diffuse neurofibroma obstructing the external auditory meatus. J Laryngol Otol 1997; 111:145-147.  Back to cited text no. 5    

 

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