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CASE REPORT
Year : 2005  |  Volume : 51  |  Issue : 2  |  Page : 128-130

Bilateral facial squamous cell carcinoma in an 18-month-old girl with xeroderma pigmentosum


Centre Hospitalier Universitaire Ibn Sina. Hopital d’enfants Malades. Rabat, Morocco

Date of Submission01-Jun-2004
Date of Decision22-Jun-2004
Date of Acceptance04-Sep-2004

Correspondence Address:
Elkhalil Alymlahi
Centre Hospitalier Universitaire Ibn Sina. Hopital d’enfants Malades. Rabat
Morocco
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Source of Support: None, Conflict of Interest: None


PMID: 16006708

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 :: Abstract 

Squamous cell carcinoma (SCC) of the skin usually occurs in older patients and commonly develops from actinic keratosis. Patients with xeroderma pigmentosum (XP) are highly sensitive to ultraviolet radiation and prone to develop multiple skin malignancies and can acquire SCC at an early age. We report an 18-month-old girl with XP who presented clinically because of a bilateral facial skin mass that was biopsied and found to be SCC. To our knowledge, the case we describe represents the youngest XP patient to have developed facial SCC.


Keywords: Xeroderma pigmentosum, Squamous cell carcinoma, Children


How to cite this article:
Alymlahi E, Dafiri R. Bilateral facial squamous cell carcinoma in an 18-month-old girl with xeroderma pigmentosum. J Postgrad Med 2005;51:128-30

How to cite this URL:
Alymlahi E, Dafiri R. Bilateral facial squamous cell carcinoma in an 18-month-old girl with xeroderma pigmentosum. J Postgrad Med [serial online] 2005 [cited 2019 Sep 23];51:128-30. Available from: http://www.jpgmonline.com/text.asp?2005/51/2/128/16379


Xeroderma pigmentosum (XP) is a rare autosomal recessive disease that is characterised by photosensitivity and pigmentation anomalies with sunlight exposure, resulting from a defect in the deoxyribonucleic acid (DNA) repair mechanism. Ultraviolet radiation produces damage to the DNA, which provides an opportunity for mutant malignant growth. All forms of cutaneous malignancies may develop in the exposed areas and death occurs in early adulthood because of metastatic disease.[1]-[2] We report here a Moroccan 18-month-old girl with XP who exhibited bilateral squamous cell carcinoma (SCC) of the facial skin.


 :: Case History Top


An 18-month-old girl was referred for evaluation of a bilateral facial mass. The baby was born at term to non-consanguineous parents. Few months after her birth, her mother had noticed cutaneous changes on the child's sun-exposed skin. This was associated with the mother exposing the child to sunlight. Two facials tumours appeared one month prior to presentation and grew rapidly.

Examination of the girl showed atrophic changes, freckles and hyperpigmentation on the skin of the face, neck and dorsum of hands. These findings were consistent with XP. Examination of the face revealed bilateral erythematous, round, elevated, ulcerative cauliflower-like lesions. Routine blood chemistry along with blood counts was within normal range. HPV-PCR (human papilloma virus) was negative.

The computed tomographic scan showed a bilateral solid well-marginated soft-tissue mass with homogeneous enhancement after administration of intravenous contrast medium [Figure - 1]a and b. That mass did not invade adjacent bones. There was no lymph nodal enlargement or cerebral metastasis.

Histological examination of a biopsy specimen revealed a well-differentiated squamous cell carcinoma (SCC) [Figure - 2].

Surgical removal was done and histology confirmed that the two tumours were well-differentiated SCC with free surgical margins. Avoidance of sunlight was recommended.


 :: Discussion Top


Xeroderma pigmentosum (XP) is a rare (1 case/500,000 newborns), recessively transmitted genetic disease. It affects both males and females in approximately equal proportions. Consanguinity or first cousin relationships between parents of affected children has been found in 30% of cases.[1]-[2]

The genetic defect may be related to a DNA repair system that is malfunctioning. Work by laboratories throughout the world in the past few years has resulted in cloning of more than seven different DNA repair genes (XP-A to XP-G) involved in XP. [1],[2],[3],[4] Environmental factors also appear to cause DNA damage and abnormal repair, the most important of which is ultraviolet radiation (UVR). UVR induces damage in DNA strands to form photoproducts that result when adjacent pyrimidine molecules fuse together to produce covalently linked thymine dimers. These must be excised and replaced if accurate DNA synthesis and replication is to occur. In XP patients, enzymatic excision of these photoproducts is much slower than normal, so that these products will persist longer than usual and will give rise to errors in DNA replication and result in spontaneous mutations.[1],[2],[3],[4]

At birth, these patients are usually normal, but within the first 2 years they start developing changes in the skin on sun-exposed areas: progressive irregular freckling, mottled hyperpigmentation and hypopigmentation, dryness, atrophy and telangiectases. These are similar to those observed in older individuals with light-complexioned skin and chronic sun exposure.[5]-[6]

Patients with XP have a risk of developing skin cancer about 1000 times more than that of the general population.[1]-[2] The age of onset of non-melanoma skin cancer is reduced by about 50 years in XP patients in comparison to that of the general population (median age, 8 years). To our knowledge, the case we describe represents the youngest XP patient to have developed facial SCC.

The two most common types of cancer found in XP patients are basal cell cancer (BCC) and SCC, with most tumours found on the face, head or neck.[1]-[2] Melanomas can also occur in approximately one-fourth of cases, of which one-third occur in the head and neck.[1] There are very few reports of other types of cutaneous neoplasms including angioma or fibrosarcoma. Additionally, there is a 10- to 20-fold increase in the frequency of occurrence of lung, uterine and CNS neoplasms in patients with XP. Anterior tongue neoplasms have been reported and are presumably due to direct exposure to the sun.[1]-[2],[5],[6],[7]

Early detection of these malignancies is necessary because they are fast-growing, metastasise early and lead to death: most patients with XP do not live beyond the third decade because of development of tumour.[6],[7],[8] Surgical excision of the tumours and grafting of skin from non-light-exposed areas is the first line of treatment. Chemo- and radiotherapy have been tried, however, no effective treatment has been found.[8] Since the underlying genetic defect cannot yet be corrected, prophylactic measures are of utmost importance. Children with XP should be protected from exposure to sun. Whenever possible, this is done by having the patients wear protective clothing, applying sunscreens and using sunglasses with side shield. Genetic counselling of affected families is of importance. Amniocentesis for prenatal diagnosis of XP and interruption of the pregnancy may be discussed.[8],[9],[10]



 
 :: References Top

1.Kraemer KH, Lee MM, Andrews AD, Lambert WC. The role of sunlight and DNA repair in melanoma and nonmelanoma skin cancer. Arch Dermatol 1994;130:1018-21.  Back to cited text no. 1  [PUBMED]  
2.Kraemer KH. Sunlight and skin cancer: Another link revealed. Proc Natl Acad Sci 1997;94:11-4.  Back to cited text no. 2  [PUBMED]  [FULLTEXT]
3.Ichihashi M, Kondo M, Ueda M. Clinical and molecular characteristics of xeroderma pigmentosum. J Pediatr Dermatol 1994;13:43-9.  Back to cited text no. 3    
4.Moriwaki SI, Ray S, Tarone RE, Kraemer KH, Grossman L. The effect of donor age on the processing of UV-damaged DNA by cultured human cells: reduced DNA repair capacity and increased DNA mutability. Mutat Res 1996;364:117-23.  Back to cited text no. 4    
5.Dilek FH, Akpolat N, Metin A, Ugras S. Atypical fibroxanthoma of the skin and the lower lip in xeroderma pigmentosum. Br J Dermatol 2000;143:618-20.  Back to cited text no. 5  [PUBMED]  [FULLTEXT]
6.Goyal JL, Rao VA, Srinivasan R, Argomal K. Oculocutaneous manifestations in xeroderma pigmentosum. Br J Ophthalmol 1994;78:295-7.  Back to cited text no. 6    
7.Hertle Rw, Durso F, Metzler JP, Varsa EW. Epibulbar squamous cell carcinoma in brothers with xeroderma pigmentosum. J Pediatr Ophthalmol Strabismus 1991;28:350-3.  Back to cited text no. 7  [PUBMED]  
8.Masinjila H, Arnbjornsson E. Two children with xeroderma pigmentosum developing two different types of malignancies simultaneously. Pediatr Surg Int 1998;13:299-300.   Back to cited text no. 8  [PUBMED]  [FULLTEXT]
9.Leal-Khouri S, Hruza GJ, Hruza LL, Martin AG. Management of a young patient with xeroderma pigmentosum. Pediatr Dermatol 1994;11:72-5.  Back to cited text no. 9  [PUBMED]  
10.Ahmed H, Hassan RY, Pindiga UH. Xeroderma pigmentosum in three consecutive siblings of a Nigerian family: Observations on oculocutaneous manifestations in black African children. Br J Ophthalmol 2001;85:110-1.  Back to cited text no. 10  [PUBMED]  [FULLTEXT]


Figures

[Figure - 1], [Figure - 2]

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