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"Sebaceous holes": A clue to the diagnosis of nevus sebaceus. J Cutan Pathol 2023; 50:783-784. [PMID: 37316952 DOI: 10.1111/cup.14480] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2023] [Revised: 04/04/2023] [Accepted: 05/29/2023] [Indexed: 06/16/2023]
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2
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Verrucous epidermal nevus. Pan Afr Med J 2023; 45:146. [PMID: 37808438 PMCID: PMC10559149 DOI: 10.11604/pamj.2023.45.146.40966] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Accepted: 07/27/2023] [Indexed: 10/10/2023] Open
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Inflammatory linear verrucous epidermal nevus (ILVEN) encompasses a spectrum of inflammatory mosaic disorders. Pediatr Dermatol 2022; 39:903-907. [PMID: 35853659 PMCID: PMC9712156 DOI: 10.1111/pde.15094] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Accepted: 07/04/2022] [Indexed: 11/28/2022]
Abstract
BACKGROUND Inflammatory linear verrucous epidermal nevus (ILVEN) is a rare skin disease characterized by pruritic erythematous scaly plaques distributed along the lines of Blaschko. Two cases of ILVEN with CARD14 mutations and one case with a GJA1 mutation have been previously reported. OBJECTIVE To elucidate the genetic cause of a cohort of patients diagnosed based on clinical and histopathological evaluation with ILVEN. METHODS We recruited patients diagnosed with ILVEN based on clinical and histopathological criteria. Exome sequencing of affected skin with or without blood/saliva was performed and germline and somatic pathogenic variants were identified. RESULTS Five patients were enrolled. All had skin lesions from birth or early childhood. Two patients developed psoriasis vulgaris after the diagnosis of ILVEN. The first had a germline heterozygous CARD14 mutation and a post-zygotic hotspot mutation in KRT10. The histopathologic evaluation did not show epidermolytic hyperkeratosis. The second had a post-zygotic hotspot mutation in HRAS. Her ILVEN became itchy once psoriasis developed. One patient was re-diagnosed with linear porokeratosis based on a germline mutation in PMVK and a post-zygotic second-hit mutation. Two patients were re-diagnosed with congenital hemidysplasia with ichthyosiform nevus and limb defect nevus based on germline NSDHL mutations. CONCLUSION ILVEN is a clinical descriptor for a heterogenous group of mosaic inflammatory disorders. Genetic analysis has the potential to more precisely categorize ILVEN and permits pathogenesis-directed therapies in some cases.
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A Case of Apocrine Carcinoma Arising in a Sebaceous Naevus: Detection of HRAS G13R Mutation. Acta Derm Venereol 2022; 102:adv00697. [PMID: 35393630 PMCID: PMC9574673 DOI: 10.2340/actadv.v102.2034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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5
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Facial Rash in a Newborn. Am Fam Physician 2021; 104:523-524. [PMID: 34783503] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
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Systematized Epidermal Nevus Syndrome Involving the Upper and Lower Eyelids Bilaterally. Turk J Ophthalmol 2021; 51:243-245. [PMID: 34461711 PMCID: PMC8411292 DOI: 10.4274/tjo.galenos.2021.72662] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2020] [Accepted: 05/03/2021] [Indexed: 12/01/2022] Open
Abstract
A 29-year-old woman presented with dark-colored raised lesions on both eyelids since early childhood. Ophthalmological examination revealed pigmented verrucous lesions on her upper and lower eyelids bilaterally. The patient had a history of generalized tonic-clonic seizures. Dermatological examination revealed hyperpigmented verrucous plaques arranged along lines of Blaschko on the neck, trunk, and arms. On the basis of these findings, the diagnosis of epidermal nevus syndrome (ENS) was made. She had surgery for debulking of the lesions. Histological analysis revealed hyperkeratosis with foci of parakeratosis, acanthosis, and papillomatosis, consistent with linear verrucous epidermal nevus. Postoperative residual lesions did not respond to oral acitretin therapy (10 mg/kg/day for 2 months). Systematized ENS can rarely cause linear verrucous nevi on the upper and lower eyelids on both sides. These patients should be investigated for accompanying systemic anomalies and followed for potential malignant transformation of the skin lesions.
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Linear Verrucous Epidermal Nevus. Indian Pediatr 2019; 56:981. [PMID: 31729336] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
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8
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Squamous cell carcinoma with perineural involvement in nevus sebaceus. Cutis 2019; 103:E17-E19. [PMID: 31116824] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Nevus sebaceus (NS), also known as an organoid nevus, is a congenital skin hamartoma involving the pilosebaceous unit, epidermis, and adnexa, frequently occurring in the scalp area. During childhood, the lesion remains unchanged but may subsequently increase in size during puberty in response to hormonal release, with possible tumor development. We report a case of squamous cell carcinoma (SCC) development in an NS with histologic evidence of perineural involvement on the anterior central scalp of a 13-year-old adolescent girl. We also review the management and prognosis.
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MESH Headings
- Adolescent
- Carcinoma, Squamous Cell/diagnosis
- Carcinoma, Squamous Cell/pathology
- Carcinoma, Squamous Cell/surgery
- Diagnosis, Differential
- Female
- Head and Neck Neoplasms/diagnosis
- Head and Neck Neoplasms/pathology
- Head and Neck Neoplasms/surgery
- Humans
- Neoplasms, Multiple Primary/diagnosis
- Neoplasms, Multiple Primary/pathology
- Neoplasms, Multiple Primary/surgery
- Nevus, Sebaceous of Jadassohn/diagnosis
- Nevus, Sebaceous of Jadassohn/pathology
- Nevus, Sebaceous of Jadassohn/surgery
- Scalp
- Skin Neoplasms/diagnosis
- Skin Neoplasms/pathology
- Skin Neoplasms/surgery
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Schimmelpenning Syndrome. Indian Pediatr 2018; 55:1014. [PMID: 30587664] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
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10
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Choroid Osteoma in Schimmelpenning-Feuerstein-Mims Syndrome. Indian Pediatr 2018; 55:601-602. [PMID: 30129544] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
BACKGROUND Schimmelpenning syndrome is a multisystem disorder. CASE CHARACTERISTICS A term female neonate with sebaceous nevi of the face had choroid osteoma of the right eye. OBSERVATION At one month of age, the infant was observed to have choroidal neovascularization that was successfully treated with laser photo-coagulation and anti-VEGF. MESSAGE Choroid osteoma and neovascularization are rare associations of Schimmelpenning syndrome, and should be screened for and managed early.
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Somatic KRAS mutation in an infant with linear nevus sebaceous syndrome associated with lymphatic malformations: A case report and literature review. Medicine (Baltimore) 2017; 96:e8016. [PMID: 29381910 PMCID: PMC5708909 DOI: 10.1097/md.0000000000008016] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
RATIONALE Linear nevus sebaceous syndrome (LNSS) is a rare neurocutaneous syndrome, characterized by nevus sebaceous,central nervous system (CNS), ocular and skeletal abnormalities. The present study describes KRAS somatic mosaic mutation in a case of LNSS with lymphatic malformations (LMs). PATIENT CONCERNS A 4-month-old female with a clinical diagnosis of LNSS presented with infantile spasms, mental retardation, skull dysplasia, ocular abnormalities, congenital atrial septal defect, and LMs. DIAGNOSIS Cervical ultrasonography revealed a 4.6 × 4.6 × 2.2cm no echo packet with clear boundary in the subcutaneous tissues of the right neck. The neck MRI indicated a cyst in the subcutaneous tissues of the right neck. Whole-exome sequencing revealed a low-level heterozygous mutation of the KRAS gene (c.35C > T; p.G12D, 19%) in the skin lesion sample. This mutation was not present in the blood samples of the patient and her parents. INTERVENTIONS The patient received sclerotherapy with paicibanil (OK-432) injection for the cyst. OUTCOMES Following 1 year of treatment, the patient exhibited fewer seizures. The mental and motor development was significantly improved. The patient can currently walk with assistance and speak simple words. LESSONS LNSS is a rare, congenital neurocutaneous syndrome consisting of a spectrum of abnormalities involving the skin, central nervous system, eyes, LMs and other systems. LNSS can be caused by postzygotic somatic mutation in the RAS family of genes. Multidisciplinary evaluation and treatment is needed.
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Linear syringocystadenoma papilliferum on the retroauricular area associated with nevus sebaceus. Dermatol Online J 2016; 22:13030/qt1st1m3f7. [PMID: 28329571] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2016] [Accepted: 11/16/2016] [Indexed: 06/06/2023] Open
Abstract
Syringocystadenoma papilliferum is a rare cutaneous adnexal tumor that usually arises in the head and neck region. It may develop de novo or within a nevus sebaceus. Linear syringocystadenoma papilliferum is an uncommon variant of this benign tumor. We report a child with linear retroauricular distribution of syringocystadenoma papilliferum. A background nevus sebaceus was shown histologically. Total excision was curative with no recurrence. An association between the linear variant of syringocystadenoma papilliferum and nevus sebaceus has not been reported previously.
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A pale macule and a waxy pink lesion in a child with neurofibromatosis type 1. AUSTRALIAN FAMILY PHYSICIAN 2016; 45:655-656. [PMID: 27606368] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
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A unexpected growth arising within nevus sebaceous of Jadassohn. Dermatol Online J 2016; 22:13030/qt03s2g1c8. [PMID: 26990478] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2016] [Accepted: 01/15/2016] [Indexed: 06/05/2023] Open
Abstract
The predisposition to epithelial neoplasms in nevus sebaceous is well established; most tumors occur in adults and are benign. Hidradenoma is a relatively rare benign tumor of sweat gland origin that can rarely arise within a nevus sebaceous. We present an interesting case of a hidradenoma and sebaceoma arising within a nevus sebaceous and present a literature review of the 2 conditions. Even though hidradenoma is a benign tumor, we would advocate complete excision given the potential for malignant transformation.
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Changing Facial Lesion. Am Fam Physician 2015; 92:925-926. [PMID: 26554287] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
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Sebaceus and Becker's Nevus: Overview of Their Presentation, Pathogenesis, Associations, and Treatment. Am J Clin Dermatol 2015; 16:197-204. [PMID: 25782676 DOI: 10.1007/s40257-015-0123-y] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Nevus sebaceus (NS) and Becker's nevus (BN) are two variants of epidermal nevi. NS clinically presents as a yellowish-orange, hairless plaque on the scalp, face, or neck, while BN presents as a tan-to-brown hyperpigmented, sometimes hypertrichotic, plaque typically on the chest and shoulder. Histologically, NS displays mature or nearly mature sebaceus glands as well as acanthosis and fibroplasia of the papillary dermis. BN shows variable papillomatosis, acanthosis, and hyperkeratosis, with hyperpigmentation of the basal/suprabasal layer. While the genetic basis of NS is thought to be due to post-zygotic mutations in the Harvey rat sarcoma viral oncogene homolog (HRAS)/Kristen rat sarcoma viral oncogene homolog (KRAS) genes, the genetic basis of BN is relatively unknown and is implicated with paradominant inheritance. In some patients, NS and BN can each be associated with additional cutaneous and extra-cutaneous anomalies, ranging from benign or malignant tumors to multiple organ irregularities. Due to the wide range of possible associations, treatment for NS and BN is devised on a case-by-case basis. In this article, we review the features, etiology, and diagnosis/management of NS and BN, with a focus on associations. We also report a patient who concomitantly presents with both lesions.
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Schimmelpenning feuerstein-mims syndrome with isolated enlargement of left temporal lobe. Indian J Pediatr 2015; 82:197-8. [PMID: 24986195 DOI: 10.1007/s12098-014-1522-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/22/2014] [Accepted: 06/16/2014] [Indexed: 11/27/2022]
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Linear sebaceous nevus syndrome associated with rod-cone dystrophy. J Pediatr Ophthalmol Strabismus 2014; 51 Online:e13-5. [PMID: 25314308 DOI: 10.3928/01913913-20140225-02] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/23/2013] [Accepted: 01/06/2014] [Indexed: 11/20/2022]
Abstract
To the authors' knowledge, this case report is the first to describe rod-cone dystrophy in a patient with linear sebaceous nevus syndrome. Because linear sebaceous nevus syndrome is a multisystem disorder, it is important that treatment include an interdisciplinary approach. The electroretinographic findings are characteristic and can be subtle. These findings should be differentiated from the findings in high myopia.
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Calcified scleral choristoma in organoid nevus syndrome simulating retinoblastoma. J Pediatr Ophthalmol Strabismus 2014; 51 Online:e1-3. [PMID: 24410727 DOI: 10.3928/01913913-20130107-02] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/21/2013] [Accepted: 10/16/2013] [Indexed: 11/20/2022]
Abstract
A child referred for management of retinoblastoma who alternatively had a calcified scleral choristoma as part of previously undiagnosed organoid nevus syndrome is described. A 31-month-old male infant with scalp alopecia was referred for retinoblastoma management after a calcified mass in his left eye was found. Ophthalmic examination revealed the mass was of choroidal or scleral origin, underlying the retina. The amelanotic circumpapillary mass extended superonasally in a geographic configuration and measured 14×12 mm. There was no subretinal fluid, hemorrhage, feeder vessels, or tumor seeding. Ocular ultrasonography confirmed a homogeneous calcified intraocular mass 3.1 mm in thickness. Enhanced depth imaging optical coherence tomography revealed that the lesion was located within the sclera compressing the overlying choroidal tissue. Further evaluation disclosed cutaneous aplasia cutis congenita with nevus sebaceous of Jadassohn. Magnetic resonance imaging disclosed an arachnoid cyst of the brain. Later, optical coherence tomography revealed the mass to be in the deep choroid or within the sclera. This constellation of ocular, cutaneous, and neurological features were suggestive of organoid nevus syndrome. At the 2-year follow-up, the findings were stable. The calcified choristoma of organoid nevus syndrome, located within the sclera in this case, has distinctive clinical features that differentiate this benign tumor from retinoblastoma.
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Intraoral manifestations in a patient with Epidermal nevus syndrome. J Contemp Dent Pract 2013; 14:762-765. [PMID: 24309363 DOI: 10.5005/jp-journals-10024-1399] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
AIM To report rare findings of oral and periodontal manifestations in a patient with Epidermal nevus syndrome (ENS). BACKGROUND The ENS describes the rare association of an epidermal nevus with abnormalities of central nervous system,ocular and skeletal abnormalities. Reports of oral involvement have been few. Also, most of the intraoral lesions have been reported in patients with nevi that do not fulfill the criteria for the diagnosis of ENS. CASE DESCRIPTION This report describes a case of ENS that, in addition to cutaneous manifestations showed skeletal involvement and intraoral manifestations such as the extension of the nevi on the face intraorally involving the labial mucosa, hypoplasia, hypodontia of teeth and severe periodontal destruction. CONCLUSION Patients with extensive epidermal nevi and systemic abnormalities should be suspected of having the ENS. Evaluation and management of patients with ENS requires a multidisciplinary team approach involving the dermatologist, pediatrician, ophthalmologist, neurologist, genetist, plastic surgeon and orthopedic services. Although uncommonly described in association with ENS, significant intraoral lesions do occur. Periodontal manifestations as in our patient, which to our knowledge has not been described in association with ENS so far, may also be present. CLINICAL RELEVANCE Alteration of the response of periodontal tissues to dental plaque in the presence of certain systemic diseases has been reported, but not in association with ENS. Severe periodontal destruction due to exaggerated response to dental plaque was seen in the present case. Hence, emphasis on oral hygiene maintenance in such patients is essential. Patients with ENS must be evaluated periodically as they show a persistent predisposition for the development of tumors.
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Inflammatory linear verrucous epidermal nevus. THE JOURNAL OF THE ASSOCIATION OF PHYSICIANS OF INDIA 2013; 61:431-432. [PMID: 24640220] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
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Phacomatosis pigmentokeratotica--a patient with hypophosphatemic rickets. Skinmed 2013; 11:125-128. [PMID: 23745233] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
The epidermal naevus syndrome (ENS) is a sporadic condition characterized by congenital epidermal naevi associated with anomalies in other organ systems, most commonly the central nervous system and skeleton. We report a case of ENS presenting hypophosphataemic rickets resistant to traditional therapeutic agents.
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Is it inflammatory linear verrucous epidermal nevus or linear psoriasis? Chin Med J (Engl) 2013; 126:1794-1795. [PMID: 23652072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/02/2023] Open
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Sebaceous nevus syndrome: a case report of a child with nevus sebaceus, mental retardation, seizures, and mucosal and ocular abnormalities. Dermatol Online J 2012; 18:5. [PMID: 23031372] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/01/2023] Open
Abstract
A 12-year-old girl presented with extensive epidermal nevi, new onset seizures, mental retardation, and oral and ocular abnormalities. We briefly review the case and epidermal nevus syndrome (ENS), which is characterized by epidermal nevi occurring in conjunction with neurologic, ocular, skeletal, and/or other system involvement.
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Epidermal nevus syndrome. Indian Pediatr 2012; 49:341-342. [PMID: 22565088] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
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[Congenital linear nevus sebaceus]. Ugeskr Laeger 2011; 173:2202-2203. [PMID: 21893006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
An unusual case of nevus sebaceous is described. Nevus sebaceous is a congenital epidermal hamartoma of the skin and the predilection site is the head or neck. In this case the nevus followed the lines of Blaschko along the back of the left lower extremity. The linear lesion seemed papulovesicular which caused suspicion of incontinentia pigmenti or infection, and the boy received antimicrobial treatment until a biopsy revealed the correct diagnosis. We wish to emphasize this clinical picture to spare the patient and relatives from unnecessary tests, treatment and concern.
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Epidermal nevus syndrome with neuronal migration defect. Indian Pediatr 2011; 48:739-740. [PMID: 21992913] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
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Intraocular choristoma, anterior staphyloma with ipsilateral nevus sebaceus, and congenital giant hairy nevus: a case report. Cutis 2011; 87:93-95. [PMID: 21416777] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
A 5-year-old girl presented with choristoma of the eye along with nevus sebaceus and congenital giant hairy nevus over the face. Anterior staphyloma also was present. Although choristomas have been seen occasionally occurring with nevus sebaceus, an associated ipsilateral, regional, congenital giant hairy nevus is rare.
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Epidermal nevus. Dermatol Online J 2010; 16:12. [PMID: 21163163] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/30/2023] Open
Abstract
A healthy 25-year-old man presented with a widespread, non-organoid, non-epidermolytic epidermal nevus. In addition to extensive hyperpigented patches and thin plaques following Blaschko lines, there were superimposed psoriasiform plaques on the elbows and warty plaques on the upper trunk. Striate palmar keraoderma also was evident. We review the clinical morphologies, sites of involvement, histopathologic findings (presence or absence of epidermolytic hyperkeratosis), and syndromal associations of non-organoid EN with underlying mutations in different genes.
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