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González-Muñoz JF, Sánchez-Sendra B, Monteagudo C. Diagnostic Algorithm to Subclassify Atypical Spitzoid Tumors in Low and High Risk According to Their Methylation Status. Int J Mol Sci 2023; 25:318. [PMID: 38203489 PMCID: PMC10779069 DOI: 10.3390/ijms25010318] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2023] [Revised: 12/20/2023] [Accepted: 12/21/2023] [Indexed: 01/12/2024] Open
Abstract
Current diagnostic algorithms are insufficient for the optimal clinical and therapeutic management of cutaneous spitzoid tumors, particularly atypical spitzoid tumors (AST). Therefore, it is crucial to identify new markers that allow for reliable and reproducible diagnostic assessment and can also be used as a predictive tool to anticipate the individual malignant potential of each patient, leading to tailored individual therapy. Using Reduced Representation Bisulfite Sequencing (RRBS), we studied genome-wide methylation profiles of a series of Spitz nevi (SN), spitzoid melanoma (SM), and AST. We established a diagnostic algorithm based on the methylation status of seven cg sites located in TETK4P2 (Tektin 4 Pseudogene 2), MYO1D (Myosin ID), and PMF1-BGLAP (PMF1-BGLAP Readthrough), which allows the distinction between SN and SM but is also capable of subclassifying AST according to their similarity to the methylation levels of Spitz nevi or spitzoid melanoma. Thus, our epigenetic algorithm can predict the risk level of AST and predict its potential clinical outcomes.
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Affiliation(s)
| | - Beatriz Sánchez-Sendra
- Skin Cancer Research Group, Biomedical Research Institute INCLIVA, 46010 Valencia, Spain (B.S.-S.)
| | - Carlos Monteagudo
- Skin Cancer Research Group, Biomedical Research Institute INCLIVA, 46010 Valencia, Spain (B.S.-S.)
- Department of Pathology, University of Valencia, 46010 Valencia, Spain
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2
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Colebatch AJ, Adhikari C, Diefenbach RJ, Rawson RV, Ferguson PM, Rizos H, Long GV, McCarthy SW, Thompson JF, Wilmott JS, Scolyer RA. Comprehensive Clinical, Histopathologic, and Molecular Analysis and Long-term Follow-up of Patients With Nodal Blue Nevi. Am J Surg Pathol 2022; 46:1048-1059. [PMID: 35439782 DOI: 10.1097/pas.0000000000001902] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Blue nevi are benign, melanocytic neoplasms that show a range of clinical and morphologic patterns and include common/dendritic, cellular, and atypical cellular subtypes. Like other nevi, they most commonly occur in skin but can occasionally involve lymph nodes where they may be misinterpreted as representing metastatic melanoma. Moreover, whether benign blue nevi can metastasize to lymph nodes and their natural history and prognostic significance has been the subject of great controversy. To date, few cases of nodal blue nevi have been reported in the literature, and those reports have had limited clinical follow-up and supporting molecular data. This study sought to determine the clinical, pathologic, and molecular features of blue nevi involving lymph nodes, clarify their clinical significance, provide evidence for understanding their pathogenesis, and highlight potential pitfalls in the interpretation of lymph nodes with an ultimate aim of improving patient care. Thirteen cases of blue nevi involving lymph nodes were identified in the archives of Royal Prince Alfred Hospital, Sydney, Australia (1984-2018). A detailed assessment of the clinical and pathologic features of each case was performed, including an evaluation of all available immunohistochemical stains. Extended clinical follow-up was available for 9 patients. Droplet digital polymerase chain reaction for GNAQ Q209L, Q209P and GNA11 Q209L mutations was performed on 7 cases of blue nevi within lymph nodes together with matching cutaneous (presumed primary) blue nevi in 2 cases. All cases showed typical histologic features of blue nevi. BAP1 was retained in all cases (n=7). There were no recurrence or metastasis of blue nevus in any case on long-term clinical follow-up (n=9, median follow-up, 12 y). The majority of cases (n=5 of 7 evaluated) had GNAQ and GNA11 driver mutations. The 2 patients with a matched primary cutaneous blue nevus and regionally associated nodal blue nevus had the same GNAQ Q209L mutation in both sites in each patient. We conclude that blue nevi can involve lymph nodes and are associated with benign clinical behavior, and probably represent so-called "benign" metastasis. Awareness of these lesions is important when evaluating lymph nodes to avoid misdiagnosis as metastatic melanoma.
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Affiliation(s)
- Andrew J Colebatch
- Melanoma Institute Australia
- Faculty of Medicine and Health
- NSW Health Pathology
- Royal Prince Alfred Hospital
| | - Chandra Adhikari
- Melanoma Institute Australia
- Faculty of Medicine and Health
- NSW Health Pathology
| | - Russell J Diefenbach
- Faculty of Medicine, Health, and Human Sciences, Macquarie University, Sydney, NSW, Australia
| | - Robert V Rawson
- Melanoma Institute Australia
- Faculty of Medicine and Health
- NSW Health Pathology
- Royal Prince Alfred Hospital
| | - Peter M Ferguson
- Melanoma Institute Australia
- Faculty of Medicine and Health
- NSW Health Pathology
- Royal Prince Alfred Hospital
| | - Helen Rizos
- Melanoma Institute Australia
- Faculty of Medicine, Health, and Human Sciences, Macquarie University, Sydney, NSW, Australia
| | - Georgina V Long
- Melanoma Institute Australia
- Faculty of Medicine and Health
- Charles Perkins Centre, The University of Sydney
- Royal North Shore and Mater Hospitals
| | - Stanley W McCarthy
- Melanoma Institute Australia
- Faculty of Medicine and Health
- NSW Health Pathology
- Royal Prince Alfred Hospital
| | - John F Thompson
- Melanoma Institute Australia
- Faculty of Medicine and Health
- Royal Prince Alfred Hospital
| | - James S Wilmott
- Melanoma Institute Australia
- Faculty of Medicine and Health
- Charles Perkins Centre, The University of Sydney
| | - Richard A Scolyer
- Melanoma Institute Australia
- Faculty of Medicine and Health
- Charles Perkins Centre, The University of Sydney
- NSW Health Pathology
- Royal Prince Alfred Hospital
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3
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Davies OMT, Majerowski J, Segura A, Kelley SW, Sokumbi O, Humphrey SR. A sixteen-year single-center retrospective chart review of Spitz nevi and spitzoid neoplasms in pediatric patients. Pediatr Dermatol 2020; 37:1073-1082. [PMID: 32857447 DOI: 10.1111/pde.14320] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/11/2020] [Revised: 06/22/2020] [Accepted: 07/14/2020] [Indexed: 12/28/2022]
Abstract
BACKGROUND Spitzoid neoplasms in pediatric patients pose an interesting challenge for clinicians. More data on the clinical, histologic, and molecular characteristics of these lesions are necessary to distinguish features that may portend recurrence or malignant behavior to help determine future treatment guidelines in pediatric patients. METHODS Institutional Review Board approval was obtained from Children's Hospital of Wisconsin to conduct a retrospective analysis of spitzoid neoplasms. Patients with biopsied or excised spitzoid neoplasms between 01/01/2000 and 08/01/2016 were included. Pertinent clinical and histologic data were collected. Atypical, unusual, or diagnostically uncertain lesions were selected for re-review. RESULTS 266 lesions from 264 patients were included. 243 were classified as benign (91.35%), 22 as atypical (8.27%), and 1 as spitzoid melanoma (0.38%). No clinical or histologic variables were found to be statistically significant between the benign Spitz, atypical Spitz, and spitzoid melanoma cohorts. No known deaths occurred. CONCLUSION Our findings highlight the extreme variability of spitzoid neoplasms clinically and histologically. Importantly, this study demonstrates that the vast majority of spitzoid neoplasms in pediatric populations are benign and supports conservative management of spitzoid lesions in children.
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Affiliation(s)
| | | | - Annette Segura
- Department of Pathology, Medical College of Wisconsin, Milwaukee, WI, USA
| | | | - Olayemi Sokumbi
- Departments of Dermatology and Laboratory Medicine & Pathology, Mayo Clinic, Jacksonville, FL, USA
| | - Stephen R Humphrey
- Department of Dermatology, Medical College of Wisconsin, Milwaukee, WI, USA
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4
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Spitz Nevus and Other Spitzoid Tumors in Children. Part 2: Cytogenetic and Molecular Features. Prognosis and Treatment. ACTAS DERMO-SIFILIOGRAFICAS 2020. [DOI: 10.1016/j.adengl.2019.12.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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5
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Sainz-Gaspar L, Sánchez-Bernal J, Noguera-Morel L, Hernández-Martín A, Colmenero I, Torrelo A. Spitz Nevus and Other Spitzoid Tumors in Children. Part 2: Cytogenetic and Molecular Features. Prognosis and Treatment. ACTAS DERMO-SIFILIOGRAFICAS 2019; 111:20-25. [PMID: 31739993 DOI: 10.1016/j.ad.2019.02.010] [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: 01/14/2019] [Accepted: 02/03/2019] [Indexed: 12/25/2022] Open
Abstract
Melanocytic neoplasms with spitzoid morphology (Spitz nevi, atypical Spitz tumors, and spitzoid melanomas) may be benign or malignant. Because the malignant potential of atypical Spitz tumors is uncertain, the proper therapeutic approach has been much debated over the years. Promising new techniques for molecular analysis have enabled better predictions of the biological behavior of these tumors. We review their cytogenetic features and prognosis and also provide an update of the most recent recommendations for management.
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Affiliation(s)
- L Sainz-Gaspar
- Servicio de Dermatología y Anatomía Patológica, Hospital Infantil Universitario del Niño Jesús, Madrid, España
| | - J Sánchez-Bernal
- Servicio de Dermatología y Anatomía Patológica, Hospital Infantil Universitario del Niño Jesús, Madrid, España
| | - L Noguera-Morel
- Servicio de Dermatología y Anatomía Patológica, Hospital Infantil Universitario del Niño Jesús, Madrid, España
| | - A Hernández-Martín
- Servicio de Dermatología y Anatomía Patológica, Hospital Infantil Universitario del Niño Jesús, Madrid, España
| | - I Colmenero
- Servicio de Dermatología y Anatomía Patológica, Hospital Infantil Universitario del Niño Jesús, Madrid, España
| | - A Torrelo
- Servicio de Dermatología y Anatomía Patológica, Hospital Infantil Universitario del Niño Jesús, Madrid, España.
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Harvey NT, Wood BA. A Practical Approach to the Diagnosis of Melanocytic Lesions. Arch Pathol Lab Med 2018; 143:789-810. [PMID: 30059258 DOI: 10.5858/arpa.2017-0547-ra] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
CONTEXT.— Melanocytic lesions are common in routine surgical pathology. Although the majority of these lesions can be confidently diagnosed using well-established morphologic criteria, there is a significant subset of lesions that can be diagnostically difficult. These can be a source of anxiety for patients, clinicians, and pathologists, and the potential consequences of a missed diagnosis of melanoma are serious. OBJECTIVE.— To provide a practical approach to the diagnosis of melanocytic lesions, including classic problem areas as well as suggestions for common challenges and appropriate incorporation of ancillary molecular techniques. DATA SOURCES.— Literature search using PubMed and Google Scholar, incorporating numerous search terms relevant to the particular section, combined with contemporaneous texts and lessons from personal experience. CONCLUSIONS.— Although a subset of melanocytic lesions can be diagnostically challenging, the combination of a methodical approach to histologic assessment, knowledge of potential diagnostic pitfalls, opinions from trusted colleagues, and judicious use of ancillary techniques can help the pathologist navigate this difficult area.
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Affiliation(s)
- Nathan T Harvey
- From the Dermatopathology Group, Department of Anatomical Pathology, PathWest Laboratory Medicine, Perth, Australia; and the Division of Pathology and Laboratory Medicine, Medical School, University of Western Australia, Perth, Australia
| | - Benjamin A Wood
- From the Dermatopathology Group, Department of Anatomical Pathology, PathWest Laboratory Medicine, Perth, Australia; and the Division of Pathology and Laboratory Medicine, Medical School, University of Western Australia, Perth, Australia
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Ferrara G, Partenzi A, Filosa A. Sentinel Node Biopsy in Melanoma: A Short Update. Dermatopathology (Basel) 2018; 5:21-25. [PMID: 29719827 PMCID: PMC5920957 DOI: 10.1159/000484892] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2017] [Accepted: 10/31/2017] [Indexed: 02/05/2023] Open
Abstract
Several controversies are still ongoing about sentinel node biopsy in melanoma. It is basically a staging procedure for melanoma > 0.75 mm in thickness or for thinner melanoma in the presence of ulceration, high mitotic rate, and/or lymphovascular invasion. Complete lymph node dissection after a positive sentinel node can also allow a better locoregional disease control but seems not to prevent the development of distant metastases. The use of sentinel node biopsy in atypical Spitz tumors should be discouraged because of their peculiar biological properties.
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Affiliation(s)
- Gerardo Ferrara
- Anatomic Pathology Unit, Macerata General Hospital, Macerata, Italy
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8
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Lallas A, Apalla Z, Ioannides D, Lazaridou E, Kyrgidis A, Broganelli P, Alfano R, Zalaudek I, Argenziano G. Update on dermoscopy of Spitz/Reed naevi and management guidelines by the International Dermoscopy Society. Br J Dermatol 2017; 177:645-655. [PMID: 28118479 DOI: 10.1111/bjd.15339] [Citation(s) in RCA: 70] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/19/2016] [Indexed: 01/23/2023]
Abstract
Spitzoid lesions represent a challenging and controversial group of tumours, in terms of clinical recognition, biological behaviour and management strategies. Although Spitz naevi are considered benign tumours, their clinical and dermoscopic morphological overlap with spitzoid melanoma renders the management of spitzoid lesions particularly difficult. The controversy deepens because of the existence of tumours that cannot be safely histopathologically diagnosed as naevi or melanomas (atypical Spitz tumours). The dual objective of the present study was to provide an updated classification on dermoscopy of Spitz naevi, and management recommendations of spitzoid-looking lesions based on a consensus among experts in the field. After a detailed search of the literature for eligible studies, a data synthesis was performed from 15 studies on dermoscopy of Spitz naevi. Dermoscopically, Spitz naevi are typified by three main patterns: starburst pattern (51%), a pattern of regularly distributed dotted vessels (19%) and globular pattern with reticular depigmentation (17%). A consensus-based algorithm for the management of spitzoid lesions is proposed. According to it, dermoscopically asymmetric lesions with spitzoid features (both flat/raised and nodular) should be excised to rule out melanoma. Dermoscopically symmetric spitzoid nodules should also be excised or closely monitored, irrespective of age, to rule out atypical Spitz tumours. Dermoscopically symmetric, flat spitzoid lesions should be managed according to the age of the patient. Finally, the histopathological diagnosis of atypical Spitz tumour should warrant wide excision but not a sentinel lymph-node biopsy.
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Affiliation(s)
- A Lallas
- First Department of Dermatology, Aristotle University, Thessaloniki, Greece
| | - Z Apalla
- First Department of Dermatology, Aristotle University, Thessaloniki, Greece
| | - D Ioannides
- First Department of Dermatology, Aristotle University, Thessaloniki, Greece
| | - E Lazaridou
- First Department of Dermatology, Aristotle University, Thessaloniki, Greece
| | - A Kyrgidis
- Skin Cancer Unit, Arcispedale Santa Maria Nuova IRCCS, Reggio Emilia, Italy
| | - P Broganelli
- City of Health and Science University, Turin, Italy
| | - R Alfano
- Department of Anaesthesiology, Surgery and Emergency Medicine, Second University of Naples, Naples, Italy
| | - I Zalaudek
- Department of Dermatology and Venereology, Nonmelanoma Skin Cancer Unit, Medical University of Graz, Austria
| | - G Argenziano
- Dermatology Unit, Second University of Naples, Naples, Italy
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9
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Abstract
Childhood melanoma is a rare pediatric malignancy, with fewer than 500 new diagnoses annually. The incidence is increasing, particularly in the adolescent population. This review highlights the epidemiology, clinical presentation, and histopathologic challenges of pediatric melanoma. Surgical resection remains the cornerstone for localized and regionally advanced disease. Adjuvant therapies, including current options and potential novel therapeutics for this unique population will be discussed.
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Affiliation(s)
- Elisabeth T Tracy
- Division of Pediatric Surgery, Department of Surgery, Duke University Medical Center, Durham, North Carolina
| | - Jennifer H Aldrink
- Division of Pediatric Surgery, Department of Surgery, Nationwide Children׳s Hospital, The Ohio State University College of Medicine, Nationwide Children׳s Dr, FB Suite 6B.1, Columbus, Ohio 43205.
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10
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Massi D, De Giorgi V, Mandalà M. The complex management of atypical Spitz tumours. Pathology 2016; 48:132-41. [PMID: 27020385 DOI: 10.1016/j.pathol.2015.12.003] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2015] [Revised: 11/10/2015] [Accepted: 11/11/2015] [Indexed: 12/12/2022]
Abstract
In recent years, advances in molecular genetic characterisation have revealed that atypical Spitz tumours (ASTs) are basically heterogeneous diseases, although the clinical relevance of these findings is yet to be determined. Evidence of molecularly-defined diverse groups of lesions continues to accumulate; however, conflicting, confusing, and overlapping terminology has fostered ambiguity and lack of clarity in the field in general. The lack of fundamental diagnostic (morphological) unambiguous classification framework results in a number of challenges in the interpretation of the molecular genetic data. In this review, we discuss the main difficulties for pathologists and clinicians in the complex management of ASTs, with particular emphasis on the different genetic and biological features of recently-described entities, and offer our view of what could be medically reasonable to guide a rational approach in light of current data.
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Affiliation(s)
- Daniela Massi
- Division of Pathological Anatomy, Department of Surgery and Translational Medicine, University of Florence, Italy.
| | | | - Mario Mandalà
- Unit of Medical Oncology, Department of Oncology and Hematology, Papa Giovanni XXIII Hospital, Bergamo, Italy
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11
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Malkan AD, Sandoval JA. Controversial tumors in pediatric surgical oncology. Curr Probl Surg 2014; 51:478-520. [PMID: 25524425 DOI: 10.1067/j.cpsurg.2014.11.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2014] [Accepted: 11/17/2014] [Indexed: 12/13/2022]
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12
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McCormack CJ, Conyers RK, Scolyer RA, Kirkwood J, Speakman D, Wong N, Kelly JW, Henderson MA. Atypical Spitzoid neoplasms: a review of potential markers of biological behavior including sentinel node biopsy. Melanoma Res 2014; 24:437-47. [PMID: 24892957 DOI: 10.1097/cmr.0000000000000084] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Atypical cutaneous melanocytic lesions, including those with Spitzoid features, can be difficult to categorize as benign or malignant. This can lead to suboptimal management, with potential adverse patient outcomes. Recent studies have enhanced knowledge of the molecular and genetic biology of these lesions and, combined with clinicopathological findings, is further defining their biological spectrum, classification, and behavior. Sentinel node biopsy provides important prognostic information in patients with cutaneous melanoma, but its role in the management of melanocytic lesions of uncertain malignant potential (MELTUMP) is controversial. This paper examines the role of molecular testing and sentinel node biopsy in MELTUMPs, particularly atypical Spitzoid tumors.
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Affiliation(s)
- Christopher J McCormack
- aPeter Macallum Cancer Institute, East Melbourne bVictorian Melanoma Service, Alfred Hospital, Prahran cDepartment of Paediatrics, Murdoch Children's Research Institute, Royal Children's Hospital, The University of Melbourne, Parkville dThe Royal Children's Hospital, Flemington Road, Parkville, Victoria eMelanoma Institute Australia , Royal Prince Alfred Hospital, The University of Sydney, Sydney, New South Wales, Australia fDepartment of Medicine, Melanoma and Skin Cancer Program, University of Pittsburgh Cancer Institute, Pittsburgh, Pennsylvania, USA
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13
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Lallas A, Kyrgidis A, Ferrara G, Kittler H, Apalla Z, Castagnetti F, Longo C, Moscarella E, Piana S, Zalaudek I, Argenziano G. Atypical Spitz tumours and sentinel lymph node biopsy: a systematic review. Lancet Oncol 2014; 15:e178-83. [PMID: 24694641 DOI: 10.1016/s1470-2045(13)70608-9] [Citation(s) in RCA: 98] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Sentinel lymph node biopsy has been proposed as a diagnostic method for estimation of the malignant potential of atypical Spitz tumours. However, although cell deposits are commonly detected in the sentinel lymph nodes of patients with atypical Spitz tumours, their prognosis is substantially better than that of patients with melanoma and positive sentinel lymph node biopsies. We did a systematic review of published reports to assess the role of sentinel lymph node biopsy as a prognostic method in the management of atypical Spitz tumours. The results of our analysis did not show any prognostic benefit of sentinel lymph node biopsy; having a positive sentinel lymph node does not seem to predict a poorer outcome for patients with atypical Spitz tumours. These findings indicate that, especially in the paediatric population, it might be prudent initially to use complete excision with clear margins and careful clinical follow-up in patients with atypical Spitz tumours.
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Affiliation(s)
- Aimilios Lallas
- Skin Cancer Unit, Arcispedale Santa Maria Nuova Istituto di Ricerca e Cura a Carattere Scientifico (IRCCS), Reggio Emilia, Italy
| | - Athanassios Kyrgidis
- Department of Otolaryngology Head and Neck Surgery, Medical School, Aristotle University, Thessaloniki, Greece
| | - Gerardo Ferrara
- Anatomic Pathology Unit, Department of Oncology, Gaetano Rummo General Hospital, Benevento, Italy
| | - Harald Kittler
- Department of Dermatology, Division of General Dermatology, Medical University of Vienna, Austria
| | - Zoe Apalla
- State Clinic of Dermatology, Hospital of Venereal and Skin Diseases, Thessaloniki, Greece
| | - Fabio Castagnetti
- Surgery Unit, Arcispedale Santa Maria Nuova Istituto di Ricerca e Cura a Carattere Scientifico (IRCCS), Reggio Emilia, Italy
| | - Caterina Longo
- Skin Cancer Unit, Arcispedale Santa Maria Nuova Istituto di Ricerca e Cura a Carattere Scientifico (IRCCS), Reggio Emilia, Italy
| | - Elvira Moscarella
- Skin Cancer Unit, Arcispedale Santa Maria Nuova Istituto di Ricerca e Cura a Carattere Scientifico (IRCCS), Reggio Emilia, Italy
| | - Simonetta Piana
- Pathology Unit, Arcispedale Santa Maria Nuova Istituto di Ricerca e Cura a Carattere Scientifico (IRCCS), Reggio Emilia, Italy
| | - Iris Zalaudek
- Skin Cancer Unit, Arcispedale Santa Maria Nuova Istituto di Ricerca e Cura a Carattere Scientifico (IRCCS), Reggio Emilia, Italy; Department of Dermatology, Medical University, Graz, Austria
| | - Giuseppe Argenziano
- Skin Cancer Unit, Arcispedale Santa Maria Nuova Istituto di Ricerca e Cura a Carattere Scientifico (IRCCS), Reggio Emilia, Italy.
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14
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Moscarella E, Zalaudek I, Ferrara G, Manzo M, Savarese I, Argenziano G. Problematic melanocytic lesions in children. ACTA ACUST UNITED AC 2014. [DOI: 10.1586/edm.09.22] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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15
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Hinkle NM, Malkan AD, Sandoval JA. The Application and Indications for Sentinel Lymph Node Biopsy in Pediatric Solid Tumors: Current Status and Future Directions. ACTA ACUST UNITED AC 2014. [DOI: 10.4236/ijcm.2014.518145] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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16
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Moscarella E, Piccolo V, Argenziano G, Lallas A, Longo C, Castagnetti F, Pizzigoni S, Zalaudek I. Problematic Lesions in Children. Dermatol Clin 2013; 31:535-47, vii. [DOI: 10.1016/j.det.2013.06.003] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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17
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The surgical management of Spitz naevi and atypical spitzoid neoplasms: A review of the literature. Surgeon 2013; 11:205-9. [DOI: 10.1016/j.surge.2013.01.001] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2012] [Revised: 12/17/2012] [Accepted: 01/01/2013] [Indexed: 11/21/2022]
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18
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Clear cell nodular hidradenoma involving the lymphatic system: a tumor of uncertain malignant potential or a novel example of "metastasizing" benign tumor? Am J Surg Pathol 2013; 36:1835-40. [PMID: 23095508 DOI: 10.1097/pas.0b013e3182699363] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Exceedingly rare cases of neoplasms with clear-cut histopathologic features of benignity can show locoregional or even distant spread. Such cases can become putative examples of "benign metastasis" when a completely favorable clinical outcome is documented after an adequately long follow-up. We report 8 cases of morphologically benign clear cell nodular hidradenoma (CCNH) with lymphatic involvement. In 5 cases the cutaneous tumor showed small foci of intravascular deposits of neoplastic cells; in 2 cases the cutaneous tumor presented with a synchronous tumor in a regional node; in 1 case a nodal location CCNH was found with no evidence of any primary in the skin. All the cases were treated with conservative surgery and none of them showed disease progression during a follow-up period ranging from 2 to 11 years. These data suggest that in the absence of other histopathologic features of malignancy, lymphatic spread in CCNH can still carry an excellent prognosis and can be therefore considered as an example of "benign metastasis." As the latter concept can be set forth only after an uneventful long-term follow-up, in routine practice, cases of morphologically benign CCNH with lymphatic involvement are best labeled "atypical CCNH," or "CCNH-like tumor of uncertain malignant potential."
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19
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Urso C. Tertium non datur? Legitimacy of a third diagnostic category in melanocytic lesions. Arch Pathol Lab Med 2012; 136:1181-3. [PMID: 23020718 DOI: 10.5858/arpa.2012-0071-le] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Carmelo Urso
- Anatomic Pathology Unit, Dermatopathology Section, S. M. Annunziata Hospital, Florence, Italy
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20
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Caracò C, Mozzillo N, Di Monta G, Botti G, Anniciello A, Marone U, Di Cecilia M, Staibano S, De Rosa G. Sentinel lymph node biopsy in atypical Spitz nevi: Is it useful? Eur J Surg Oncol 2012; 38:932-5. [DOI: 10.1016/j.ejso.2012.05.010] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2011] [Revised: 05/21/2012] [Accepted: 05/24/2012] [Indexed: 11/28/2022] Open
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Mills OL, Marzban S, Zager JS, Sondak VK, Messina JL. Sentinel node biopsy in atypical melanocytic neoplasms in childhood: a single institution experience in 24 patients. J Cutan Pathol 2012; 39:331-6. [PMID: 22335592 DOI: 10.1111/j.1600-0560.2011.01853.x] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
INTRODUCTION Sentinel lymph node biopsy (SLNB) is a controversial but frequently used adjunct to wide excision of difficult-to-diagnose melanocytic proliferations of childhood. We herein report our institutional experience with SLNB in pediatric patients with these lesions, hereafter referred to as 'atypical melanocytic proliferations'. METHODS Our prospectively collected melanoma database was queried for patients ≤21 years of age status post-SLNB for a diagnosis of atypical melanocytic proliferation in which the diagnosis of melanoma ≥1 mm in depth was considered in the differential diagnosis by one or more expert dermatopathologists and for which no diagnostic consensus could be reached. RESULTS Of 24 patients identified over 17 years, 7 patients (29%) had a positive sentinel lymph node (SLN). Six SLN-positive patients underwent complete lymph node dissection, with one (14%) having additional nodal involvement identified. With a median follow-up of 4.1 years (range < 0.1 to 14.8 years), all patients showed no evidence of disease. CONCLUSIONS Despite a significant rate of identification of melanocytes in SLNs of children with atypical melanocytic proliferations, survival appears favorable and controversy surrounding the significance of nodal involvement remains. Further studies with larger numbers of patients and long-term follow-up are needed before the true prognostic value of SLNB in this setting can be determined.
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Affiliation(s)
- Omie L Mills
- Department of Pathology and Cell Biology, College of Medicine, University of South Florida, Tampa, FL 33612, USA
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Hill SJ, Delman KA. Pediatric melanomas and the atypical spitzoid melanocytic neoplasms. Am J Surg 2012; 203:761-7. [DOI: 10.1016/j.amjsurg.2011.04.008] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2010] [Revised: 04/11/2011] [Accepted: 04/11/2011] [Indexed: 02/06/2023]
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Luo S, Sepehr A, Tsao H. Spitz nevi and other Spitzoid lesions part II. Natural history and management. J Am Acad Dermatol 2011; 65:1087-92. [PMID: 22082839 DOI: 10.1016/j.jaad.2011.06.045] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2011] [Revised: 06/23/2011] [Accepted: 06/26/2011] [Indexed: 02/04/2023]
Abstract
For dermatologists, evidence-based management guidelines for Spitz tumors have not been established. Despite the lack of a standardized approach, most dermatologists recommend the excision of Spitz tumors occurring in adults and adopt more conservative measures towards pediatric cases. The histopathologic attributes and the clinical scenario are factored into management in each case. While the metastatic behavior of certain Spitz tumors is well known, the malignant potential of these lesions remains unclear because they only rarely result in negative outcomes. The risks and benefits of adjunctive measures, such as sentinel lymph node biopsy and interferon use, remain untested and are subjects of ongoing controversy. (In part II of this continuing medical education article, we will continue to use the terminology defined in part I for purposes of continuity. "Spitz tumor" is used as the umbrella term for the entire category of lesions, "common Spitz nevi" refers to only the most typical lesions seen in pediatric cases, and "atypical Spitz tumors" encompass the "all other" category, which continues to cause debate.).
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Affiliation(s)
- Su Luo
- Wellman Center for Photomedicine and Department of Dermatology, Massachusetts General Hospital, Boston, Massachusetts, USA
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Wen DR, Cochran AJ, Huang RR, Itakura E, Binder S. Clinically relevant information from sentinel lymph node biopsies of melanoma patients. J Surg Oncol 2011; 104:369-78. [DOI: 10.1002/jso.21818] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Atypical Spitzoid melanocytic tumors: a morphological, mutational, and FISH analysis. J Am Acad Dermatol 2011; 64:919-35. [PMID: 21496703 DOI: 10.1016/j.jaad.2010.05.043] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2010] [Revised: 04/26/2010] [Accepted: 05/13/2010] [Indexed: 01/31/2023]
Abstract
BACKGROUND Identification of the clinical behavior of atypical Spitzoid tumors with conflicting histopathologic features remains controversial. OBJECTIVE We sought to assess whether molecular findings may be helpful in the diagnostic and prognostic assessment of atypical Spitzoid tumors. METHODS A total of 38 controversial, atypical Spitzoid lesions (≥ 1 mm in thickness) were analyzed for clinicopathological features, chromosomal alterations by fluorescence in situ hybridization (FISH) analysis (RREB1/MYB/CCND1/CEP6), BRAF(V600E) mutation by allele-specific real-time polymerase chain reaction confirmed by sequencing, and H-RAS gene mutation by direct sequencing. RESULTS Atypical Spitzoid lesions developed in 21 female and 17 male patients (mean age 22 years). Nine patients underwent sentinel lymph node biopsy and a sentinel lymph node micrometastasis was detected in 4 of these 9 cases. Four additional patients, who did not receive a sentinel lymph node biopsy, experienced bulky lymph node metastases and one experienced visceral metastases and death. Lesions from patients with lymph node involvement showed more deep mitoses (P < .01), less inflammation (P = .05), and more plasma cells (P = .04). FISH analysis demonstrated the presence of chromosomal alterations in 6 of 25 cases. Correlation with follow-up data showed that the only case with fatal outcome showed multiple chromosomal alterations by FISH analysis. BRAF(V600E) mutation was detected in 12 of 16 cases (75%) and H-RAS mutation on exon 3 was found in 3 of 11 cases (27%). LIMITATIONS Our results require validation in a larger series with longer follow-up information. CONCLUSIONS FISH assay may be of help in the prognostic evaluation of atypical Spitzoid tumors. Diagnostic significance of BRAF(V600E) and H-RAS mutations in this setting remains unclear.
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Berk DR, LaBuz E, Dadras SS, Johnson DL, Swetter SM. Melanoma and melanocytic tumors of uncertain malignant potential in children, adolescents and young adults--the Stanford experience 1995-2008. Pediatr Dermatol 2010; 27:244-54. [PMID: 20403119 DOI: 10.1111/j.1525-1470.2009.01078.x] [Citation(s) in RCA: 78] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Pediatric melanoma is difficult to study because of its rarity, possible biological differences in preadolescents compared with adolescents, and challenges of differentiating true melanoma from atypical spitzoid neoplasms. Indeterminant lesions are sometimes designated as melanocytic tumors of uncertain malignant potential (MelTUMPs). We performed a retrospective, single-institution review of melanomas, MelTUMPs and Spitz nevi with atypical features (SNAFs) in patients at 21 years of age and younger from 1995 to 2008. We identified 13 patients with melanoma, seven with MelTUMPs, and five with SNAFs. The median age for melanoma patients was 17 years, 10 for MelTUMPs, and six for SNAFs. Of the 13 melanoma patients, only four were younger than 15 years, while six were adolescents, and three were young adults. Nine melanoma patients (69%) were female. The most common histologic subtype was superficial spreading. The median depth for melanomas was 1.2 mm, and 3.4 mm for MelTUMPs. Microscopic regional nodal involvement detected on elective or sentinel lymph node (SLN) dissection was present in 2/10 (20%) of primary melanomas and 2/6 (33%) of Mel-TUMPs. Complete lymphadenectomy was performed on four melanoma patients, with three positive cases. Patient outcome through March 31, 2009 revealed no in-transit or visceral metastasis in patients with MelTUMPs or SNAFs. One SLN-positive patient (8%) with melanoma developed recurrent lymph node and liver metastasis and died 15 months after primary diagnosis. Our data highlight the rarity, female predominance, and significant rate of SLN positivity of pediatric melanoma. The high rate of MelTUMPs with regional nodal disease reinforces the need for close follow-up.
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Affiliation(s)
- David R Berk
- Department of Dermatology, Pigmented Lesion and Melanoma Program, Stanford University Medical Center, Stanford, California 94063, USA
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Magro CM, Crowson AN, Mihm MC, Gupta K, Walker MJ, Solomon G. The dermal-based borderline melanocytic tumor: A categorical approach. J Am Acad Dermatol 2010; 62:469-79. [DOI: 10.1016/j.jaad.2009.06.042] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2008] [Revised: 06/03/2009] [Accepted: 06/04/2009] [Indexed: 02/04/2023]
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Fleming MG. Pigmented lesion pathology: what you should expect from your pathologist, and what your pathologist should expect from you. Clin Plast Surg 2010; 37:1-20. [PMID: 19914454 DOI: 10.1016/j.cps.2009.07.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
The first part of this review examines the reliability of histologic diagnosis in pigmented lesions, as measured by concordance studies and medicolegal analysis. It emphasizes the role of clinicians in maximizing that reliability, by providing adequate clinical descriptions, using appropriate biopsy technique, and critically interpreting pathology reports. It identifies those entities that are especially problematic, either because they cannot be reliably recognized by the histopathologist or because their histology is a poor guide to their biologic behavior. The second part of the review is a guide to some of the more difficult and controversial pigmented lesions, including dysplastic nevus, spitzoid nevi and melanomas, cellular blue nevus, animal-type melanoma, and deep penetrating nevus.
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Affiliation(s)
- Matthew G Fleming
- Department of Dermatology, Medical College of Wisconsin, 8701 Watertown Plank Road, Milwaukee, WI 53226, USA.
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Chakera AH, Hesse B, Burak Z, Ballinger JR, Britten A, Caracò C, Cochran AJ, Cook MG, Drzewiecki KT, Essner R, Even-Sapir E, Eggermont AMM, Stopar TG, Ingvar C, Mihm MC, McCarthy SW, Mozzillo N, Nieweg OE, Scolyer RA, Starz H, Thompson JF, Trifirò G, Viale G, Vidal-Sicart S, Uren R, Waddington W, Chiti A, Spatz A, Testori A. EANM-EORTC general recommendations for sentinel node diagnostics in melanoma. Eur J Nucl Med Mol Imaging 2009; 36:1713-42. [PMID: 19714329 DOI: 10.1007/s00259-009-1228-4] [Citation(s) in RCA: 134] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
The accurate diagnosis of a sentinel node in melanoma includes a sequence of procedures from different medical specialities (nuclear medicine, surgery, oncology, and pathology). The items covered are presented in 11 sections and a reference list: (1) definition of a sentinel node, (2) clinical indications, (3) radiopharmaceuticals and activity injected, (4) dosimetry, (5) injection technique, (6) image acquisition and interpretation, (7) report and display, (8) use of dye, (9) gamma probe detection, (10) surgical techniques in sentinel node biopsy, and (11) pathological evaluation of melanoma-draining sentinel lymph nodes. If specific recommendations given cannot be based on evidence from original, scientific studies, referral is given to "general consensus" and similar expressions. The recommendations are designed to assist in the practice of referral to, performance, interpretation and reporting of all steps of the sentinel node procedure in the hope of setting state-of-the-art standards for good-quality evaluation of possible spread to the lymphatic system in intermediate-to-high risk melanoma without clinical signs of dissemination.
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Affiliation(s)
- Annette H Chakera
- Department of Plastic Surgery and Burns Unit, Rigshospitalet, Copenhagen, Denmark.
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Atypical spitzoid melanocytic tumors with positive sentinel lymph nodes in children and teenagers, and comparison with histologically unambiguous and lethal melanomas. Am J Surg Pathol 2009; 33:1386-95. [PMID: 19609204 DOI: 10.1097/pas.0b013e3181ac1927] [Citation(s) in RCA: 74] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Children and teenagers with a positive sentinel lymph node (SLN) after a prior diagnosis of an atypical spitzoid melanocytic tumor (ASMT) are usually cared for clinically in the same way as patients with melanoma. Little is known about long-term follow-up of these individuals to determine whether this practice is appropriate. To learn more about the biology of these tumors we retrospectively reviewed the clinical and pathologic findings of children and teenagers (<18 y of age at the time of diagnosis) with an ASMT, positive SLN and follow-up of at least 3 years. Their findings were compared with histologically unambiguous melanomas of children or teenagers, who had a positive SLN or died of metastatic melanoma. Eleven individuals, 6 girls and 5 boys, with primary ASMT and positive SLN were identified. The primary tumors ranged in thickness from 2.1 to 12 mm (median, 4.6 mm; mean, 5 mm). The tumor mitotic rate ranged from 1 to 10 mitoses/mm (median, 3/mm, median, 3/mm). The positive SLNs included 6 nodes with intranodal melanocytic aggregates measuring <1 mm in greatest dimension, and 5 nodes, in which the size of the melanocyte deposits was >/=1 mm. All the patients with ASMT and positive SLN remained free of disease with a median follow-up of 47 months (mean, 61 mo, range: 36 to 132 mo). In contrast, 2 of 5 patients <18 years of age with a histologically unambiguous melanoma and a positive SLN died of metastatic melanoma. The overall disease-specific mortality rate for all patients <18 years of age diagnosed with melanoma was 12%. Our findings confirm that children and teenagers with ASMTs and positive SLNs have a less aggressive clinical course than those with histologically unambiguous melanoma.
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Smylie M, Claveau J, Alanen K, Taillefer R, George R, Wong R, Mason WP. Management of malignant melanoma: best practices. J Cutan Med Surg 2009; 13:55-73. [PMID: 19459245 DOI: 10.2310/7750.2008.08029] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
BACKGROUND Melanoma is a commonly occurring cancer in Canada, with an estimated age-standardized incidence of 10 to 13 per 100,000. An estimated 4,300 new cases were diagnosed, and there were 800 reported deaths in 2005. OBJECTIVE AND CONCLUSION The Canadian Expert Panel on Malignant Melanoma has developed best practices to improve the management of malignant melanoma. Sections include recommendations on primary diagnosis, dermatopathologic assessment, and reporting; use of preoperative lymphoscintigraphy and an intraoperative gamma probe to map and biopsy the sentinel lymph node; indications for surgical resection, sentinel node biopsy, and surgery for advance disease; use of interferon-alpha adjuvant therapy and treatment options for stage IV disease; and management of central nervous system metastases.
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Urso C, Borgognoni L, Doria M, Tinacci G, Zini E. Non-sentinel lymph node involvement in a patient with an atypical Spitz tumor and a positive sentinel node. Report of a case and review of the literature. J Cutan Pathol 2009; 36:586-90. [DOI: 10.1111/j.1600-0560.2008.01080.x] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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Ludgate MW, Fullen DR, Lee J, Lowe L, Bradford C, Geiger J, Schwartz J, Johnson TM. The atypical Spitz tumor of uncertain biologic potential: a series of 67 patients from a single institution. Cancer 2009; 115:631-41. [PMID: 19123453 DOI: 10.1002/cncr.24047] [Citation(s) in RCA: 158] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
BACKGROUND Atypical Spitz tumors (AST) are rare spitzoid melanocytic proliferations with an uncertain malignant potential. ASTs have overlapping features of both Spitz nevi and spitzoid melanoma, and consequently generate controversy with diagnosis and management. Sentinel lymph node biopsy (SLNB) has been proposed as a possible means to gain additional insight into the true biologic potential of these tumors; however, previous reports on the use of SLNB in ASTs have been limited by small numbers of patients and short durations of follow-up. METHODS The authors extracted data from their institution's prospective melanoma database, collected between 1994 and 2007, for all patients with ASTs of uncertain biologic potential. They reviewed the clinical features of these patients, including the sentinel lymph node status, and the histological features of the tumors. RESULTS A total of 67 patients with ASTs were identified, with a median age of 23.7 years. The mean depth was 2.4 mm. Of these, 57 had a SLNB performed, with 27 (47%) having a positive sentinel lymph node. SLNB-positive cases had a significantly lower mean age than SLNB-negative cases (17.9 vs 28.7 years; P = .013); however, no other significant differences were observed. All 27 patients with a positive SLNB were alive and disease free with median follow-up of 43.8 months. One patient who did not receive a SLNB developed recurrent disease with regional and distant metastases. CONCLUSIONS ASTs do not appear to behave like conventional melanoma. There is a high incidence of microscopic lymph node deposits in SLNBs, but despite this finding, patients have a favorable prognosis. Our findings raise several questions regarding the malignant potential of ASTs, and the role of SLNB in their management.
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Affiliation(s)
- Mathew W Ludgate
- Department of Dermatology, University of Michigan Medical School and Comprehensive Cancer Center, Ann Arbor, Michigan 48109, USA.
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Fraitag S, Vignon-Pennamen MD. La tumeur de Spitz et le mélanocytome épithélioïde pigmenté : de nouveaux cadres nosologiques pour des tumeurs souvent mal définies. Ann Dermatol Venereol 2009; 136:133-44. [DOI: 10.1016/j.annder.2008.11.011] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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Kwon EJ, Winfield HL, Rosenberg AS. The controversy and dilemma of using sentinel lymph node biopsy for diagnostically difficult melanocytic proliferations. J Cutan Pathol 2009; 35:1075-7. [PMID: 18976401 DOI: 10.1111/j.1600-0560.2008.01172.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Affiliation(s)
- Eun J Kwon
- Departments of Dermatology and Dermatopathology, MetroHealth Medical Center, Cleveland, OH, USA.
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Sentinel lymph node biopsy for patients with diagnostically controversial Spitzoid melanocytic tumors? Adv Anat Pathol 2008; 15:253-62. [PMID: 18724099 DOI: 10.1097/pap.0b013e31818323ac] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The distinction of a Spitz nevus from melanoma can be very difficult. Pathologists may disagree on whether a Spitzoid melanocytic proliferation is benign or malignant, or acknowledge uncertainty about the diagnosis. As long as melanoma is suspected or strongly considered, a clinical management plan is often adopted as if the patient had melanoma, which may include sentinel lymph node (SLN) biopsy for staging. The findings of the sentinel node may resolve the diagnostic controversy about the primary tumor, but there is also the risk for more diagnostic confusion, uncertainty, and errors. We review the arguments in favor and against SLN biopsy for patients with diagnostically controversial Spitzoid melanocytic tumors, summarize current experience, and illustrate diagnostic pitfalls. Although SLN biopsy provides prognostic information helpful for clinical trials, we caution against performing the procedure as a diagnostic adjunct.
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Murali R, Thompson JF, Scolyer RA. Sentinel lymph node biopsy for melanoma: aspects of pathologic assessment. Future Oncol 2008; 4:535-51. [DOI: 10.2217/14796694.4.4.535] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
Sentinel lymph node (SLN) biopsy affords an accurate, minimally invasive means of staging and determining prognosis in patients with melanoma and for identifying those patients who may benefit from complete regional lymph node dissection. Careful and accurate histopathologic assessment of SLNs is critical to achieving optimal reliability of the technique. Micromorphometric parameters of melanoma deposits in SLNs have been shown to be predictive of regional non-SLN involvement and of clinical outcomes. Several non-histopathologic methods of SLN evaluation have been investigated, and while some of them show promise for the future, excision and histopathologic examination currently remains the gold standard for the evaluation of SLNs.
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Affiliation(s)
- Rajmohan Murali
- Royal Prince Alfred Hospital, Department of Anatomical Pathology, Camperdown, Sydney, NSW 2050, Australia and, Royal Prince Alfred Hospital, Sydney Melanoma Unit, Sydney Cancer Centre, Camperdown, Sydney, New South Wales, Australia and, University of Sydney, Discipline of Pathology, Faculty of Medicine, Sydney, NSW, Australia
| | - John F Thompson
- Royal Prince Alfred Hospital, Sydney Melanoma Unit, Sydney Cancer Centre, Camperdown, Sydney, New South Wales, Australia University of Sydney, Discipline of Surgery, Faculty of Medicine, Sydney, NSW, Australia
| | - Richard A Scolyer
- Royal Prince Alfred Hospital, Department of Anatomical Pathology, Camperdown, Sydney, NSW 2050, Australia and, Royal Prince Alfred Hospital, Sydney Melanoma Unit, Sydney Cancer Centre, Camperdown, Sydney, New South Wales, Australia and, University of Sydney, Discipline of Pathology, Faculty of Medicine, Sydney, NSW, Australia
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Murali R, Sharma RN, Thompson JF, Stretch JR, Lee CS, McCarthy SW, Scolyer RA. Sentinel lymph node biopsy in histologically ambiguous melanocytic tumors with spitzoid features (so-called atypical spitzoid tumors). Ann Surg Oncol 2007; 15:302-9. [PMID: 18000712 DOI: 10.1245/s10434-007-9577-3] [Citation(s) in RCA: 101] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2006] [Accepted: 04/30/2007] [Indexed: 01/12/2023]
Abstract
BACKGROUND The distinction of Spitz nevi from melanomas with spitzoid morphology can be difficult. For lesions with overlapping histopathologic features, it may be impossible to predict their malignant potential with certainty. The current study evaluated the role of sentinel lymph node (SLN) biopsy in patients with such atypical spitzoid tumors. METHODS The clinical and histopathologic features of 21 patients with atypical spitzoid tumors who underwent SLN biopsy were reviewed and correlated with the presence or absence of metastatic tumor in their corresponding SLNs. RESULTS The atypical histopathologic features that were most frequently present included incomplete maturation (11 patients, 52%), two or more dermal mitoses per square millimeter (13 patients, 62%), and deep dermal mitoses (11 patients, 52%). Six patients (29%) showed SLN metastasis. There were histopathologic differences between tumors with positive SLN when compared with tumors with negative SLN: mean tumor thickness (3.38 mm vs. 2.04 mm), incomplete maturation (83% vs. 40%), median dermal mitotic rate (3.5/mm(2) vs. 2/mm(2)), deep dermal mitoses (83% vs. 47%), and expansile dermal nodules (50% vs. 13%). However, of these, only the difference in mean tumor thickness reached statistical significance (P < .05). CONCLUSIONS SLN biopsy offers a means of assessing the metastatic potential of atypical spitzoid tumors and aids in the management of these patients by selecting patients who may benefit from a regional node field dissection and those in whom the use of adjuvant therapies could be considered.
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Affiliation(s)
- Rajmohan Murali
- Sydney Melanoma Unit, Royal Prince Alfred Hospital, Camperdown, Sydney, NSW, 2050, Australia
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Rütten A. [Spitz nevus vs 'spitzoid' malignant melanoma. A diagnostic dilemma?]. DER PATHOLOGE 2007; 28:422-9. [PMID: 17846775 DOI: 10.1007/s00292-007-0945-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
Data from the literature and histopathological findings in six personal cases are used to illustrate criteria that can be applied in differential diagnosis between a Spitz nevus and a spitzoid variant of malignant melanoma. The diagnostic term 'atypical Spitz tumor' is explained; it is used to describe a morphological "grey zone" in which it is not possible to differentiate with adequate certainty between a Spitz nevus and a spitzoid malignant melanoma.
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Affiliation(s)
- A Rütten
- Dermatopathologische Gemeinschaftspraxis, Siemensstrasse 6/1, 88048, Friedrichshafen.
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McArthur GJ, Banwell ME, Cook MG, Powell BW. The role of sentinel node biopsy in the management of melanocytic lesions of uncertain malignant potential (MUMP). J Plast Reconstr Aesthet Surg 2007; 60:952-4. [PMID: 17616368 DOI: 10.1016/j.bjps.2006.04.003] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2006] [Accepted: 04/05/2006] [Indexed: 10/24/2022]
Abstract
Melanocytic lesions of uncertain malignant potential (MUMP) is a term which is useful in identifying melanocytic tumours where the distinction between benign and malignant is a histological problem. Sentinel node biopsy is recognised to provide unmatched prognostic information in melanoma patients, but has recently been advocated for diagnostic purposes in MUMP. We present the case of a seven-year-old girl who presented with a six-month history of a changing pigmented lesion on her left upper arm. Excision biopsy not only showed a melanocytic lesion with some spitzoid features but also marked atypia making it appropriate to use the term MUMP. Sentinel node biopsy was undertaken. This case demonstrates that sentinel node biopsy can be performed safely in children. Given the low morbidity of the procedure we advocate that this technique should be considered in this difficult diagnostic situation to further the management of these patients.
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Affiliation(s)
- G J McArthur
- Department of Plastic and Reconstructive Surgery, St. George's Hospital NHS Trust, Blackshaw Road, Tooting London SW17 0QT, United Kingdom.
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Abstract
The sentinel lymph nodes are the most likely site of nodal metastasis. Their focused analysis results in upstaging cancers, although the extra yield from a more intensive work-up is generally dominated by micrometastases and isolated tumor cells. Nodal staging is generally done to reflect systemic spread of solid tumors and guide treatment accordingly. However, in general, the two processes of haematogenous and lymphogenic spread are not causally interrelated, and the extrapolation from low-volume nodal involvement to systemic involvement and therapeutic consequences of this extrapolation are still under investigation.
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Affiliation(s)
- Gábor Cserni
- Department of Pathology, Bács-Kiskun County Teaching Hospital, Nyiri ut 38, H-6000 Kecskemét, Hungary.
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Gamblin TC, Edington H, Kirkwood JM, Rao UNM. Sentinel Lymph Node Biopsy for Atypical Melanocytic Lesions with Spitzoid Features. Ann Surg Oncol 2006; 13:1664-70. [PMID: 17024556 DOI: 10.1245/s10434-006-9142-5] [Citation(s) in RCA: 67] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
INTRODUCTION Sentinel lymph node biopsy (SLNB) is routinely used as a staging procedure for melanomas, however may also assist in understanding the biology of atypical and controversial spitzoid melanocytic skin lesions. METHODS Five hundred and forty-nine sentinal lymph node excisions were performed over a 5-year period. Fourteen patients with controversial melanocytic lesions were identified and of these ten underwent SLNB. The histology of the primary skin lesion and corresponding sentinal lymph nodes were evaluated and correlated with outcome. RESULTS Thickness of the primary melanocytic lesion ranged from 1.22 to 4 mm. Fifty percent of patients were less than 17 years of age. Ten patients underwent SLNB and three cases (30%) displayed metastatic disease in the SLNB specimen. All three patients were under 17 years of age and all underwent completion axillary dissection. One completion axillary dissection had an additional node with metastasis on routine H&E and immunohistochemical staining. No capsular invasion was seen. All three cases with metastatic disease received adjuvant systemic therapy and remain disease free at 29, 49 and 57 months follow-up. All patients with a negative SLNB remain disease free at mean follow-up of 28.1 months (range: 13-40 months). CONCLUSION Our results confirm that some of these spitzoid lesions metastasize to regional lymph nodes and SLNB is a valuable adjunct tool in staging these lesions. However, molecular studies and a prolonged follow-up are needed to determine whether these lesions, especially those occurring in children are comparable to stage matched overt melanoma in adults.
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Affiliation(s)
- T Clark Gamblin
- Division of Surgical Oncology, Department of Surgery, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA.
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Urso C, Borgognoni L, Saieva C, Ferrara G, Tinacci G, Begliomini B, Reali UM. Sentinel lymph node biopsy in patients with “atypical Spitz tumors.” A report on 12 cases. Hum Pathol 2006; 37:816-23. [PMID: 16784980 DOI: 10.1016/j.humpath.2006.02.001] [Citation(s) in RCA: 61] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/01/2005] [Revised: 01/28/2006] [Accepted: 02/02/2006] [Indexed: 12/24/2022]
Abstract
The distinction between Spitz nevus and melanoma is currently possible, applying a set of definite histological criteria. However, in certain lesions deviating from the stereotypical morphology of classic Spitz nevi ("atypical Spitz tumors"), the differentiation between benign and malignant cases appears problematic because objective criteria for a reliable diagnosis are lacking. We report the clinicopathologic findings of 12 patients with atypical Spitz tumors, who underwent sentinel node biopsy. All the tumors, composed of spindle and/or epithelioid cells, histologically showed features referable to Spitz nevi mixed to features generally found in malignant melanomas. Nine patients were females and three males, ranging in age from 2 to 48 years (mean, 23.2 years). The size of lesions ranged from 5 to 9 mm, the thickness from 1.12 to 5.70 mm. Nodal micrometastases were found in 4 (33.3%) patients. Among the patients with positive sentinel node, two showed minimal nodal involvements; one patient showed additional tumor deposits in one nonsentinel regional node. All patients are alive and free of disease with a follow-up of 2 to 90 months (mean, 26.3 months). Metastasizing and nonmetastasizing cases appeared clinically and histologically indistinguishable. The statistical analysis showed no significant difference between the two groups. Results suggested that all the reported cases may constitute a relatively homogeneous morphological group of lesions with a relevant metastatic potential that may be underdiagnosed.
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Affiliation(s)
- Carmelo Urso
- Department of Anatomic Pathology, Dermatopathology Section, S. M. Annunziata Hospital, Florence, Italy.
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Yang CH, Yeh JT, Shen SC, Lo YF, Kuo TT, Chang JWC. Regressed subungual melanoma simulating cellular blue nevus: managed with sentinel lymph node biopsy. Dermatol Surg 2006; 32:577-80; discussion 580-1. [PMID: 16681670 DOI: 10.1111/j.1524-4725.2006.32119.x] [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: 11/28/2022]
Abstract
BACKGROUND Subungual melanoma, a not uncommon presentation of cutaneous melanoma in Asian populations, is easily overlooked as benign and thus is improperly treated. OBJECTIVE To present two cases with clinical suspicion of subungual melanoma. Skin biopsies failed to demonstrate the diagnostic features of malignancy. METHODS Lymphoscintigraphy and sentinel lymph node (SLN) biopsies were performed to determine regional lymph node status. RESULTS Both hematoxylin-eosin and HMB45 staining revealed melanoma cells in the SLN of the patient. The second patient's SLN was negative for malignant cells, but her excised primary lesion showed extensive regressed melanoma. CONCLUSION Regression phenomena are not uncommon for subungual melanoma. An extention biopsy techniques are useful for determining nodal basin status in regressed subungual melanoma.
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Affiliation(s)
- Chih-Hsun Yang
- Department of Dermatology, Chang Gung Memorial Hospital, Taipei, Taiwan
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Regressed Subungual Melanoma Simulating Cellular Blue Nevus. Dermatol Surg 2006. [DOI: 10.1097/00042728-200604000-00019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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