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and ipsilateral malformations of the central nervous system&#46; We report the case of a neonate with nevus psiloliparus and aplasia cutis congenita &#40;ACC&#41; on the scalp&#8212;an association known as a didymosis aplasticopsilolipara&#8212;in addition to ocular lesions &#40;lipodermoid cysts and coloboma&#41;&#44; a right temporal arachnoid cyst&#44; and aortic coarctation&#46;</p><p id="par0010" class="elsevierStylePara elsevierViewall">The patient was a 6-day-old neonate&#44; born at term after an uncomplicated pregnancy and normal vaginal delivery&#59; he was the first child of unrelated healthy parents&#46; Physical examination showed a hairless&#44; well-defined&#44; soft&#44; yellowish area adjacent to a bright red&#44; hairless&#44; circumscribed lesion covered by a thin transparent membrane in the right frontoparietal region &#40;<a class="elsevierStyleCrossRef" href="#fig0005">Fig&#46; 1</a>&#41;&#46; In addition&#44; 2 yellow papules were observed on the right upper eyelid &#40;<a class="elsevierStyleCrossRef" href="#fig0010">Fig&#46; 2</a>&#41;&#59; these were diagnosed by the ophthalmologist as lipodermoid cysts associated with an ipsilateral coloboma&#46; Neurological examination was normal&#46; Histopathologic examination of the hairless area of the scalp showed abundant fatty tissue&#44; rudimentary hair follicles&#44; and isolated arrector pili muscles&#59; the findings were compatible with nevus psiloliparus&#46; Brain magnetic resonance imaging &#40;MRI&#41; showed an arachnoid cyst occupying the right temporal fossa &#40;<a class="elsevierStyleCrossRef" href="#fig0015">Fig&#46; 3</a>&#41; and echocardiography revealed moderate aortic coarctation&#46;</p><elsevierMultimedia ident="fig0005"></elsevierMultimedia><elsevierMultimedia ident="fig0010"></elsevierMultimedia><elsevierMultimedia ident="fig0015"></elsevierMultimedia><p id="par0015" class="elsevierStylePara elsevierViewall">The clinical&#44; histological&#44; and brain MRI findings led to a diagnosis of ECCL&#46;</p><p id="par0020" class="elsevierStylePara elsevierViewall">ECCL is a neurocutaneous syndrome of unknown etiology&#46; Described in 1970 by Haberland and Perou&#44;<a class="elsevierStyleCrossRef" href="#bib0030"><span class="elsevierStyleSup">6</span></a> it is characterized by unilateral lesions in tissues of ectodermal and mesodermal origin&#58; skin&#44; eye&#44; adipose tissue&#44; and brain&#46; Aortic coarctation&#44; progressive bone cysts&#44; and jaw tumors have also been described in association with this syndrome&#46;<a class="elsevierStyleCrossRef" href="#bib0035"><span class="elsevierStyleSup">7</span></a> The differential diagnosis with other neurocutaneous mosaicisms&#44; such as Delleman&#44; Goltz&#44; Goldenhar&#44; or Proteus syndromes&#44; can be very difficult due to the large number of overlapping features&#46;</p><p id="par0025" class="elsevierStylePara elsevierViewall">Nevus psiloliparus in close association with ACC was first described in 2 patients by Torrelo et al&#46;<a class="elsevierStyleCrossRef" href="#bib0005"><span class="elsevierStyleSup">1</span></a> in 2005&#59; a third case was reported by Stieler et al&#46;<a class="elsevierStyleCrossRef" href="#bib0010"><span class="elsevierStyleSup">2</span></a> in 2008&#46; This association&#44; known as didymosis aplasticopsilolipara&#44; has been described as an example of nonallelic twin spotting&#46;<a class="elsevierStyleCrossRefs" href="#bib0005"><span class="elsevierStyleSup">1&#44;2&#44;8</span></a></p><p id="par0030" class="elsevierStylePara elsevierViewall">Our case is the fourth report of ACC and nevus psiloliparus in association with ECCL&#46; The fact that this association has been described in isolated cases only suggests that it is purely coincidental&#59; however&#44; we consider that if new cases of ECCL with this characteristic clinical presentation are reported&#44; we may need to consider the possibility that ACC and nevus psiloliparus form part of the clinical spectrum of this neurocutaneous syndrome&#46;</p></span>"
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Vol. 103. Núm. 4.
Páginas 341-342 (mayo 2012)
Vol. 103. Núm. 4.
Páginas 341-342 (mayo 2012)
Case and Research Letters
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Encephalocraniocutaneous Lipomatosis and Didymosis Aplasticopsilolipara
Lipomatosis encefalocraneocutánea y didimosis aplasticopsilolípara
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N. Martí
Autor para correspondencia
nuriamarfa@hotmail.com

Corresponding author.
, V. Alonso, E. Jordá
Servicio de Dermatología, Hospital Clínico Universitario de Valencia, Valencia, Spain
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To the Editor:

Nevus psiloliparus is clinically observed as a well-defined, oval or round, hairless area with a smooth surface located in the parietal or frontoparietal region. Histological examination shows a skin lesion with rudimentary hair follicles and cords of adipose tissue penetrating the dermis. This nevus is the main hallmark of encephalocraniocutaneous lipomatosis (ECCL), otherwise known as Haberland syndrome1-5; however, 2 cases of nevus psiloliparus have been described without neurological or ocular involvement.2 ECCL is a very rare form of neurocutaneous syndrome clinically characterized by lipomatous hamartomas on the face and scalp, ocular abnormalities, and ipsilateral malformations of the central nervous system. We report the case of a neonate with nevus psiloliparus and aplasia cutis congenita (ACC) on the scalp—an association known as a didymosis aplasticopsilolipara—in addition to ocular lesions (lipodermoid cysts and coloboma), a right temporal arachnoid cyst, and aortic coarctation.

The patient was a 6-day-old neonate, born at term after an uncomplicated pregnancy and normal vaginal delivery; he was the first child of unrelated healthy parents. Physical examination showed a hairless, well-defined, soft, yellowish area adjacent to a bright red, hairless, circumscribed lesion covered by a thin transparent membrane in the right frontoparietal region (Fig. 1). In addition, 2 yellow papules were observed on the right upper eyelid (Fig. 2); these were diagnosed by the ophthalmologist as lipodermoid cysts associated with an ipsilateral coloboma. Neurological examination was normal. Histopathologic examination of the hairless area of the scalp showed abundant fatty tissue, rudimentary hair follicles, and isolated arrector pili muscles; the findings were compatible with nevus psiloliparus. Brain magnetic resonance imaging (MRI) showed an arachnoid cyst occupying the right temporal fossa (Fig. 3) and echocardiography revealed moderate aortic coarctation.

Figure 1.

Nevus psiloliparus adjacent to an aplasia cutis congenita lesion.

(0.1MB).
Figure 2.

Two lipodermoid cysts on the right upper eyelid.

(0.07MB).
Figure 3.

Arachnoid cyst occupying the right temporal fossa. A, brain axial T1-weighted magnetic resonance imaging; B, brain axial T2-weighted magnetic resonance imaging.

(0.22MB).

The clinical, histological, and brain MRI findings led to a diagnosis of ECCL.

ECCL is a neurocutaneous syndrome of unknown etiology. Described in 1970 by Haberland and Perou,6 it is characterized by unilateral lesions in tissues of ectodermal and mesodermal origin: skin, eye, adipose tissue, and brain. Aortic coarctation, progressive bone cysts, and jaw tumors have also been described in association with this syndrome.7 The differential diagnosis with other neurocutaneous mosaicisms, such as Delleman, Goltz, Goldenhar, or Proteus syndromes, can be very difficult due to the large number of overlapping features.

Nevus psiloliparus in close association with ACC was first described in 2 patients by Torrelo et al.1 in 2005; a third case was reported by Stieler et al.2 in 2008. This association, known as didymosis aplasticopsilolipara, has been described as an example of nonallelic twin spotting.1,2,8

Our case is the fourth report of ACC and nevus psiloliparus in association with ECCL. The fact that this association has been described in isolated cases only suggests that it is purely coincidental; however, we consider that if new cases of ECCL with this characteristic clinical presentation are reported, we may need to consider the possibility that ACC and nevus psiloliparus form part of the clinical spectrum of this neurocutaneous syndrome.

References
[1]
A. Torrelo, M.C. Boente, O. Nieto, R. Asial, I. Colmenero, B. Winik, et al.
Nevus psiloliparus and aplasia cutis: A further possible example of didymosis.
Pediatric Dermatol, 22 (2005), pp. 206-209
[2]
K.M. Stieler, S. Astner, G. Bohner, N.G. Bartels, H. Proquitté, W. Sterry, et al.
Encephalocraniocutaneous lipomatosis with didymosis aplasticopsilolipara.
Arch Dermatol, 144 (2008), pp. 266-268
[3]
R. Grimalt, E. Ermacora, L. Mistura, G. Russo, G.L. Tadini, F. Triulzi, et al.
Encephalocraniocutaneous lipomatosis: a case report and review of the literature.
Pediatr Dermatol, 10 (1993), pp. 164-168
[4]
D. Nosti-Martínez, V. del Castillo, C. Duran-Mckinster, L. Tamayo-Sánchez, M.L. Orozco-Covarrubias, R. Ruiz-Maldonado, et al.
Encephalocraniocutaneous lipomatosis: an uncommon neurocutaneous syndrome.
J Am Acad Dermatol, 32 (1995), pp. 387-389
[5]
S. Ciatti, M. Del Monaco, P. Hyde, E.F. Bernstein.
Encephalocraniocutaneous lipomatosis: a rare neurocutaneous syndrome.
J Am Acad Dermatol, 38 (1998), pp. 102-104
[6]
C. Haberland, M. Perou.
Encephalocraniocutaneous lipomatosis, a new example of ectomesodermal dysgenesis.
Arch Neurol, 22 (1970), pp. 144-145
[7]
U. Moog.
Encephalocraniocutaneous lipomatosis.
J Med Genet, 46 (2009), pp. 721-729
[8]
R. Happle.
Loss of heterozygosity in human skin.
J Am Acad Dermatol, 41 (1999), pp. 143-161

Please cite this article as: Martí N, Alonso V, Jordá E. Lipomatosis encefalocraneocutánea y didimosis aplasticopsilolípara. Actas Dermosifiliogr.2012;103:341-342.

Copyright © 2011. Elsevier España, S.L. and AEDV
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