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Elmelegy NG. Cryocarboxy surgery for the aesthetic removal of congenital melanocytic nevi types I, II, and III. EUROPEAN JOURNAL OF PLASTIC SURGERY 2023. [DOI: 10.1007/s00238-022-02036-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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Kaya M, Muratli HH. Hip dislocation based on Developmental Dysplasia of the Hip (DDH) in a patient with Giant Congenital Melanocytic Nevus (GCMN): A rare coexistence. Niger J Clin Pract 2022; 25:960-963. [DOI: 10.4103/njcp.njcp_1716_21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Wang H, Wang W, Lu J, Gu Y, Cui X, Wei C, Ren J, Gu B, Wang Z, Li Q. Distribution Patterns (7B Rule) and Characteristics of Large Congenital Melanocytic Nevi: A Retrospective Cohort Study in China. Front Med (Lausanne) 2021; 8:637857. [PMID: 33681263 PMCID: PMC7933508 DOI: 10.3389/fmed.2021.637857] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2020] [Accepted: 02/01/2021] [Indexed: 11/24/2022] Open
Abstract
Large congenital melanocytic nevus has a high risk of malignancy. However, few studies have summarized its characteristics, treatments, outcomes and malignancy incidence in Chinese patients. This paper reviews a retrospective cohort study evaluating 1,171 patients from Shanghai Ninth People's Hospital between 1 January 1989 and 31 August 2019 using electronic medical records and phone calls to collect clinical and pathological data in which 133 patients were diagnosed with a large congenital melanocytic nevus. Three patients relapsed, and none developed melanoma among the qualified patients. Besides, a new “7B” rule for distribution patterns of large congenital melanocytic nevi was proposed, including bonce, bolero, back, bathing trunk, breast/belly, body extremity, and body. The most common distribution pattern of large congenital melanocytic nevi was bonce, and all blue nevi distributed as bonce. Statistical analysis showed a significant difference (P = 0.0249) in the “7B” patterns between the melanocytic nevus and the neuronevus. In conclusion, the malignancy rate of large congenital melanocytic nevi is much lower in China than in other regions and people of other races. The pathology of large congenital melanocytic nevus may decide its “7B” distribution pattern.
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Affiliation(s)
- Huijing Wang
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Wei Wang
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jun Lu
- Division of Epidemiology and Biostatistics, School of Public Health, University of Illinois at Chicago, Chicago, IL, United States
| | - Yihui Gu
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xiwei Cui
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Chengjiang Wei
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jieyi Ren
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Bin Gu
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Zhichao Wang
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Qingfeng Li
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
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McGrath LA, Palmer JM, Stark A, Glasson W, Warrier SK, Whitehead K, Hamilton H, Brooks K, Johansson PA, Hayward NK. Genomic analysis of adult case of ocular surface giant congenital melanocytic nevus and associated clinicopathological findings. Ophthalmic Genet 2020; 41:616-620. [PMID: 32814477 DOI: 10.1080/13816810.2020.1810281] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
INTRODUCTION Conjunctival nevi are the most common tumor of the ocular surface. There are some rare reports of so-called 'giant' conjunctival nevi. We report a case of a 47-year-old female with a cutaneous and ocular surface giant congenital melanocytic nevus and describe her clinical course. CASE DESCRIPTION This is a retrospective case report of a single patient. A 47-year-old female with a history of biopsy-proven periorbital congenital melanocytic nevus, with an associated giant conjunctival nevus presented for structural and functional rehabilitation. Serial surgeries were performed and excised tissue was sent for histopathological and genetic examination. The conjunctival nevus had a low tumor mutation burden, and of the 647 somatic mutations, only one occurred within a protein coding region, namely NRAS p.Gln61Arg. CONCLUSION This is the first reported adult case including genomic analysis of an ocular surface giant congenital melanocytic nevus. The case shows a possible association between periorbital congenital melanocytic nevi and giant conjunctival nevi, and underscores the possible role that targeted drug therapies may have in malignant transformation of these conditions.
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Affiliation(s)
- Lindsay A McGrath
- Queensland Ocular Oncology Service, Terrace Eye Centre , Brisbane, QLD, Australia
| | - Jane M Palmer
- Queensland Ocular Oncology Service, Terrace Eye Centre , Brisbane, QLD, Australia.,Department of Oncogenomics , QIMR Berghofer Medical Research Institute , Brisbane, QLD, Australia
| | - Andrew Stark
- Queensland Ocular Oncology Service, Terrace Eye Centre , Brisbane, QLD, Australia
| | - William Glasson
- Queensland Ocular Oncology Service, Terrace Eye Centre , Brisbane, QLD, Australia
| | - Sunil K Warrier
- Queensland Ocular Oncology Service, Terrace Eye Centre , Brisbane, QLD, Australia
| | - Kevin Whitehead
- Department of Histopathology, Sullivan Nicolaides Pathology , Brisbane, QLD, Australia
| | - Hayley Hamilton
- Queensland Ocular Oncology Service, Terrace Eye Centre , Brisbane, QLD, Australia.,Department of Oncogenomics , QIMR Berghofer Medical Research Institute , Brisbane, QLD, Australia
| | - Kelly Brooks
- Department of Oncogenomics , QIMR Berghofer Medical Research Institute , Brisbane, QLD, Australia
| | - Peter A Johansson
- Department of Oncogenomics , QIMR Berghofer Medical Research Institute , Brisbane, QLD, Australia
| | - Nicholas K Hayward
- Department of Oncogenomics , QIMR Berghofer Medical Research Institute , Brisbane, QLD, Australia
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Wu M, Yu Q, Gao B, Sheng L, Li Q, Xie F. A large-scale collection of giant congenital melanocytic nevi: Clinical and histopathological characteristics. Exp Ther Med 2019; 19:313-318. [PMID: 31853305 DOI: 10.3892/etm.2019.8198] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2017] [Accepted: 01/03/2018] [Indexed: 11/06/2022] Open
Abstract
Giant congenital melanocytic nevi (GCMN) place a heavy psychological burden on patients due to their poor cosmetic appearance. The histopathological characteristics of GCMN have remained largely elusive. The present study investigated the histopathological characteristics of GCMN in association with their clinical appearance. A total of 98 patients diagnosed with GCMN were included in the present study and their clinical features were collected from their records. Lesion specimens were obtained and stained for histopathological analysis. Regarding the microscopic appearance of GCMN, nevi cells in the whole dermis exhibited different patterns than those in healthy tissues. Most GCMN cases featured a sub-epidermal non-involvement zone, which implies an early occurrence in embryo development. Darker nevi exhibited a higher density of infiltrated nevi cells and more pigment deposition; this appears to induce a poor skin texture. Chemical peeling and laser therapy only partly removes pigment particles and nevi cells in the upper portion of the dermis. The clinical features of GCMN are associated with the histopathological characteristics, and non-surgical therapy cannot remove the nevus cells in the deep dermis.
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Affiliation(s)
- Min Wu
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University, School of Medicine, Shanghai 200011, P.R. China
| | - Qingxiong Yu
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University, School of Medicine, Shanghai 200011, P.R. China
| | - Bowen Gao
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University, School of Medicine, Shanghai 200011, P.R. China
| | - Lingling Sheng
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University, School of Medicine, Shanghai 200011, P.R. China
| | - Qingfeng Li
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University, School of Medicine, Shanghai 200011, P.R. China
| | - Feng Xie
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University, School of Medicine, Shanghai 200011, P.R. China
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Liu HP, Zhang D. An unusual presentation of multiple congenital melanocytic nevi with a whole-body distribution. INDIAN J PATHOL MICR 2018; 61:155-156. [PMID: 29567913 DOI: 10.4103/ijpm.ijpm_477_16] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Affiliation(s)
- Hai-Peng Liu
- Department of Plastic and Reconstructive Surgery, The First Bethune Hospital of Jilin University, Changchun, China
| | - Duo Zhang
- Department of Plastic and Reconstructive Surgery, The First Bethune Hospital of Jilin University, Changchun, China
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Cooper L, Srinivasan K, Nugent N. Basal cell carcinoma arising in a congenital melanocytic naevus in an adult. BMJ Case Rep 2017; 2017:bcr-2016-217429. [PMID: 28193642 DOI: 10.1136/bcr-2016-217429] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
Congenital melanocytic naevi (CMN) are common skin lesions. They harbour a risk of malignant transformation, and various lesions have been described as developing within them. A basal cell cancer occurring within a CMN has never previously been described. A case is described of a woman aged 52 years presenting with a slow-growing, symptomatic 3 cm lesion in the centre of a 10×5 cm CMN on her right upper back. Diagnostic core biopsy revealed an ulcerated, infiltrative basal cell carcinoma which was then further excised. The scar has healed with no evidence of local recurrence at 1-year follow-up.
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Affiliation(s)
| | | | - Nora Nugent
- Queen Victoria Hospital NHS Foundation Trust, East Grinstead, West Sussex, UK
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Castro LGM, Bakos RM, Duprat Neto JP, Bittencourt FV, Di Giacomo THB, Serpa SS, Messina MCDL, Loureiro WR, Macarenco RSES, Stolf HO, Gontijo G. Brazilian guidelines for diagnosis, treatment and follow-up of primary cutaneous melanoma - Part II. An Bras Dermatol 2016; 91:49-58. [PMID: 26982779 PMCID: PMC4782647 DOI: 10.1590/abd1806-4841.20164715] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2015] [Accepted: 07/27/2015] [Indexed: 01/04/2023] Open
Abstract
The last Brazilian guidelines on melanoma were published in 2002. Development in
diagnosis and treatment made updating necessary. The coordinators elaborated ten
clinical questions, based on PICO system. A Medline search, according to
specific MeSH terms for each of the 10 questions was performed and articles
selected were classified from A to D according to level of scientific evidence.
Based on the results, recommendations were defined and classified according to
scientific strength. The present Guidelines were divided in two parts for
editorial and publication reasons. In this second part, the following clinical
questions were answered: 1) which patients with primary cutaneous melanoma
benefit from sentinel lymph node biopsy? 2) Follow-up with body mapping is
indicated for which patients? 3) Is preventive excision of acral nevi
beneficious to patients? 4) Is preventive excision of giant congenital nevi
beneficious to patients? 5) How should stages 0 and I primary cutaneous melanoma
patients be followed?
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Affiliation(s)
| | - Renato Marchiori Bakos
- Hospital de Clínicas de Porto Alegre, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | | | | | | | | | | | | | | | | | - Gabriel Gontijo
- Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
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Yikilmaz ŞR, Wilson-Clay B. Successful Breastfeeding Outcome of a Woman with a Nevus of the Nipple: A Case Study. J Hum Lact 2016; 32:361-3. [PMID: 27000129 DOI: 10.1177/0890334415627026] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/15/2015] [Accepted: 12/17/2015] [Indexed: 11/16/2022]
Abstract
Unusual conditions of the nipple and breast may interfere with breastfeeding. Nevi of the nipple are rare, and breastfeeding outcomes of women with this condition have only been briefly reported in the literature. This case describes the proactive lactation management and successful breastfeeding outcome of a woman with a large, roughly textured nevus located on her right nipple and areola.
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Alomari AK, Glusac EJ, Choi J, Hui P, Seeley EH, Caprioli RM, Watsky KL, Urban J, Lazova R. Congenital nevi versus metastatic melanoma in a newborn to a mother with malignant melanoma - diagnosis supported by sex chromosome analysis and Imaging Mass Spectrometry. J Cutan Pathol 2015; 42:757-64. [PMID: 25989266 DOI: 10.1111/cup.12523] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2014] [Revised: 12/23/2014] [Accepted: 01/20/2015] [Indexed: 12/16/2023]
Abstract
A 37-year-old pregnant woman presented with a 2-cm irregular reddish nodule on her left upper arm during pregnancy. A biopsy from the lesion showed a 2.2-mm thick malignant melanoma with intravascular invasion, 25 mitosis/mm(2) and no ulceration. Following induction of labor, the patient underwent re-excision with sentinel lymph node biopsy. This showed no residual melanoma and no lymph node metastasis. The newborn boy had multiple pigmented lesions on the trunk, some of which were large and irregular. Two were biopsied and histologic examination showed dense dermal proliferation of medium sized melanocytes with multiple mitotic figures and no maturation with their descent into the dermis, raising suspicion of transplacental metastases. Examination of the placenta failed to show metastatic lesions. Multiplex polymerase chain reaction (PCR)-based genotyping, including testing for amelogenin locus for sex chromosome determination, demonstrated the presence of Y chromosome material in the melanocytes of the newborn's lesions excluding maternal origin. A diagnosis of congenital nevi was rendered. Subsequently, Imaging Mass Spectrometric analysis of the mother's lesion showed proteomic signature expression indicative of malignant melanoma, whereas the two lesions in the newborn showed changes indicative of nevi. This case demonstrates the utility of genotyping and Mass Spectrometry analysis in this challenging clinical scenario.
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Affiliation(s)
- Ahmed K Alomari
- Department of Pathology, Yale School of Medicine, New Haven, CT, USA
| | - Earl J Glusac
- Department of Pathology, Yale School of Medicine, New Haven, CT, USA
- Department of Dermatology, Yale School of Medicine, New Haven, CT, USA
| | - Jennifer Choi
- Department of Dermatology, Yale School of Medicine, New Haven, CT, USA
| | - Pei Hui
- Department of Pathology, Yale School of Medicine, New Haven, CT, USA
| | - Erin H Seeley
- Mass Spectrometry Research Center, Vanderbilt University, Nashville, TN, USA
| | - Richard M Caprioli
- Mass Spectrometry Research Center, Vanderbilt University, Nashville, TN, USA
| | - Kalman L Watsky
- Department of Dermatology, Yale School of Medicine, New Haven, CT, USA
| | - Jennifer Urban
- Stony Brook University School of Medicine, Stony Brook, NY, USA
| | - Rossitza Lazova
- Department of Pathology, Yale School of Medicine, New Haven, CT, USA
- Department of Dermatology, Yale School of Medicine, New Haven, CT, USA
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12
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Nonpigmented metastatic melanoma in a two-year-old girl: a serious diagnostic dilemma. Case Rep Oncol Med 2015; 2015:298273. [PMID: 25763285 PMCID: PMC4339976 DOI: 10.1155/2015/298273] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2014] [Revised: 01/20/2015] [Accepted: 01/21/2015] [Indexed: 11/17/2022] Open
Abstract
Although rare, malignant melanoma may occur in children. Childhood melanomas account for only 0.3-3% of all melanomas. In particular the presence of congenital melanocytic nevi is associated with an increased risk of development of melanoma. We herein report a case of malignant melanoma that developed on a giant congenital melanocytic nevus and made a metastasis to the subcutaneous tissue of neck in a two-year-old girl. The patient was hospitalized for differential diagnosis and treatment of cervical mass with a suspicion of hematological malignancy, because the malignant transformation of congenital nevus was not noticed before. In this case, we found out a nonpigmented malignant tumor of pleomorphic cells after the microscopic examination of subcutaneous lesion. Nonpigmented metastatic melanoma was diagnosed by several immunohistochemical and flow cytometric studies. She was offered palliative chemotherapy; however, her parents did not accept treatment. The patient died within 9 months of diagnosis. We emphasized here that the possibility of malignant melanoma in the differential diagnosis of childhood tumors should be kept in mind.
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Katibi OS, Ogunbiyi A, Brown BJ, Adeyemi OO. Giant melanocytic nevus with malignant melanoma: a rare disorder in a black African child. Int J Dermatol 2014; 53:1241-3. [PMID: 25209196 DOI: 10.1111/ijd.12503] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
INTRODUCTION Giant congenital melanocytic nevus (GCMN) is rare in babies of African descent. Unfortunately, it has an increased potential for malignant transformation. REPORT A 3-year-old female child presented with a 6-month history of multiple nodules on an existing giant congenital melanocytic nevus and swelling in the right axilla of four weeks duration. Skin biopsy of the nodular skin lesions was in keeping with a metastatic malignant melanoma (Clark stage 4). She completed a full course of chemotherapy but subsequently died four months after presentation. CONCLUSION Patients with large GCMN should be counseled and followed up appropriately to improve and prolong life.
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Affiliation(s)
- Oludolapo Sherifat Katibi
- Department of Paediatrics, College of Health Sciences, University of Ilorin/Unilorin Teaching Hospital, Ilorin, Nigeria
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Imchen S, Ghosh S, Dayal S, Marwah N, Jindal N, Sangal S. Giant congenital melanocytic nevus with developmental dysplasia of bilateral hip: a rare association. Indian J Dermatol 2013; 58:475-7. [PMID: 24249902 PMCID: PMC3827522 DOI: 10.4103/0019-5154.119963] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Giant congenital melanocytic nevi are rare congenital disfiguring benign neoplasms with a risk of transformation to malignant melanoma. They often present with various extra-cutaneous features. Here, we describe a case of giant melanocytic nevus with developmental dysplasia of bilateral hip, a novel association.
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Novoa-Candia MP, Baselga E, Aguilera P, Tresserra F. Atrophic congenital melanocytic nevus mimicking rapidly involuting congenital hemangioma. Pediatr Dermatol 2013; 30:e164-5. [PMID: 22639909 DOI: 10.1111/j.1525-1470.2012.01772.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
Congenital melanocytic nevi (CMN) are benign skin lesions present in some newborns. We describe a newborn boy with a giant CMN on the scalp. It appeared as an atrophic patch with a central nodule that was suggestive of a rapidly involuting congenital hemangioma or some other vascular tumor. Histopathology confirmed the diagnosis of CMN. Magnetic resonance imaging was normal, excluding leptomeningeal melanocytosis. We did not find any other cases of CMN with this presentation in the literature.
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Affiliation(s)
- Mónica P Novoa-Candia
- Pediatric Dermatology Unit, Department of Dermatology, Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, Barcelona, SpainClinica DermikDepartment of Pathology, USP Dexeus, Barcelona, Spain
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High prevalence of angiotropism in congenital melanocytic nevi: an analysis of 53 cases. Am J Dermatopathol 2013; 35:180-3. [PMID: 22771898 DOI: 10.1097/dad.0b013e318260908c] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The mechanisms responsible for the development of congenital melanocytic nevi (CMN) have yet to be elucidated. A potential clue to their origin is the observation of angiotropism of nevus cells in CMN. Interestingly, neural crest stem cells (NCSCs), the precursors of melanocytes, demonstrate angiotropism in the embryo. There is accumulating evidence that NCSCs migrate along the external surfaces of vessels during a portion of their journey to the skin. Comparable angiotropism and migration of melanoma cells have been described as extravascular migratory metastasis in melanoma. In this report, we systematically examined for the first time, the frequency of angiotropism in 53 CMN. The lesions originated from 27 females and 26 males with an average age of 9.81 years (range 0.42-28 years). The mean nevus size was 7.43 cm (range 0.3-40 cm). Twenty-seven (50.9%) of the 53 lesions were less than 1.5 cm in diameter. Sixteen nevi (30.2%) were medium sized (1.5-19.9 cm), and 10 CMN (18.9%) were large/giant (>20 cm in diameter). The trunk was the most common location (23/53) followed by the head and neck (17/53). Thirty-eight (71.7%) of the 53 lesions were compound melanocytic nevi, and 15 (28.3%) of the 53 lesions were dermal nevi. In summary, angiotropism was observed in 50 (94.3%) of 53 cases. Consequently, such angiotropism may potentially explain the origin of the precursor cells giving rise to CMN. Further explanations concerning dysregulated growth are clearly needed for the actual appearance of CMN and their physical characteristics.
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Literature Update on Melanocytic Nevi and Pigmented Lesions in the Pediatric Population. CURRENT DERMATOLOGY REPORTS 2012. [DOI: 10.1007/s13671-012-0023-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Abstract
Neurogenic tumors are an uncommon yet important category of soft tissue tumors in children and adolescents because of their frequent association with various genetic syndromes. The heterogeneous cellular composition of the peripheral nerve and the wide metaplastic capacity of the neural crest and its derivatives generate a variety of neoplasms with neurogenic differentiation. This article reviews the clinicopathologic features and differential diagnosis of neurogenic tumors in the first two decades of life, and highlights use of selected ancillary methods for diagnosis.
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Affiliation(s)
- Justin M M Cates
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, TN, USA.
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Benign sacrococcygeal neoplasm arising at birth from a giant congenital melanocytic nevus. J Pediatr Surg 2012; 47:408-11. [PMID: 22325403 DOI: 10.1016/j.jpedsurg.2011.11.041] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/19/2011] [Revised: 11/02/2011] [Accepted: 11/11/2011] [Indexed: 11/21/2022]
Abstract
Giant congenital melanocytic nevi (CMN) are considered to be premalignant with the highest risk for conversion to melanoma. Solid tumors within giant CMN presenting at birth are relatively unusual, and a variety of malignancies have been reported within these masses. However, the frequency of malignancy in these tumors is unknown. We report the unusual case of a female neonate who was born with 2 large, perianal masses within a giant CMN over her trunk. We resected the larger of the 2 masses because of discomfort and bleeding. The mass consisted of an outgrowth of melanocytes with benign characteristics. The smaller of the 2 masses was managed expectantly and has subsequently decreased in size. We propose that pathologically benign masses within giant CMNs may not require immediate resection. We will discuss the management and pathologic findings of this case and review the literature regarding management of CMN-associated neoplasms arising at birth.
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Yun S, Kwon O, Han J, Kweon S, Lee M, Lee D, Kim M, Kim Y, Yoon T, Chung K, Kim I, Kim K, Suh K, Lee S, Seo Y, Kim K, Park H, Roh M, Ahn K, Yoon T, Kim M, Li K, Park J, Shin B, Ko J, Ahn H, Kim H, Park S, Jang S, Won Y. Clinical characteristics and risk of melanoma development from giant congenital melanocytic naevi in Korea: a nationwide retrospective study. Br J Dermatol 2011; 166:115-23. [DOI: 10.1111/j.1365-2133.2011.10636.x] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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