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 ORIGINAL ARTICLE
Year : 2008  |  Volume : 74  |  Issue : 1  |  Page : 28--31

Forehead plaque: A cutaneous marker of CNS involvement in tuberous sclerosis


Department of Dermatology, Andhra Medical College, Visakhapatnam, Andhra Pradesh, India

Correspondence Address:
G Raghu Rama Rao
Gopal Sadan, D. No.: 15-1-2C, Naoroji Road, Maharanipeta, Visakhapatnam - 530 002
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/0378-6323.38403

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Background: Tuberous sclerosis complex (TSC) is a neurocutaneous genodermatosis characterized by hamartoma formation in multiple organs. There are no definite cutaneous markers suggestive of central nervous system (CNS) involvement in TSC. Aims: To study association of forehead plaque seen in tuberous sclerosis patients and CNS involvement in TSC. Methods: This is a retrospective study of 15 cases of tuberous sclerosis in varying age groups - from 1.5 to 50 years. All the cases were thoroughly evaluated with detailed history; clinical examination; and relevant investigations like X-rays of chest, skull, hands and feet; ultrasound abdomen and computed tomography of brain. Results: Out of the 15 cases, CNS involvement was seen in 8 cases. Seizures were present in 8 cases (53.33%) and mental retardation was seen in 6 cases (40%). Computerized tomography of brain revealed subependymal nodules (SENs) in eight cases (53.33%). In addition to SENs, subependymal giant cell astrocytomas and cortical tubers were seen in 2 cases each. Out of these 8 cases having CNS involvement, in 7 cases forehead plaque was observed. In 1 case, no forehead plaque was observed (X 2 = 1.07, P <0.05). Conclusion: This study shows that there is a statistically significant relationship between the presence of a forehead plaque and CNS involvement in TSC. Therefore, forehead plaque may be considered as a novel cutaneous marker to know the CNS involvement in TSC at an early stage.






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Online since 15th March '04
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