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Suarez-Conde MF, Vallone MG, González VM, Larralde M. Sea Urchin Skin Lesions: A Case Report. Dermatol Pract Concept 2021; 11:e2021009. [PMID: 33747622 DOI: 10.5826/dpc.1102a09] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/16/2020] [Indexed: 10/31/2022] Open
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González-Cruz C, Jofre MA, Podlipnik S, Combalia M, Gareau D, Gamboa M, Vallone MG, Faride Barragán-Estudillo Z, Tamez-Peña AL, Montoya J, América Jesús-Silva M, Carrera C, Malvehy J, Puig S. Machine Learning in Melanoma Diagnosis. Limitations About to be Overcome. Actas Dermosifiliogr (Engl Ed) 2020; 111:313-316. [PMID: 32248945 DOI: 10.1016/j.ad.2019.09.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2019] [Accepted: 09/16/2019] [Indexed: 11/27/2022] Open
Abstract
BACKGROUND Automated image classification is a promising branch of machine learning (ML) useful for skin cancer diagnosis, but little has been determined about its limitations for general usability in current clinical practice. OBJECTIVE To determine limitations in the selection of skin cancer images for ML analysis, particularly in melanoma. METHODS Retrospective cohort study design, including 2,849 consecutive high-quality dermoscopy images of skin tumors from 2010 to 2014, for evaluation by a ML system. Each dermoscopy image was assorted according to its eligibility for ML analysis. RESULTS Of the 2,849 images chosen from our database, 968 (34%) met the inclusion criteria for analysis by the ML system. Only 64.7% of nevi and 36.6% of melanoma met the inclusion criteria. Of the 528 melanomas, 335 (63.4%) were excluded. An absence of normal surrounding skin (40.5% of all melanomas from our database) and absence of pigmentation (14.2%) were the most common reasons for exclusion from ML analysis. DISCUSSION Only 36.6% of our melanomas were admissible for analysis by state-of-the-art ML systems. We conclude that future ML systems should be trained on larger datasets which include relevant non-ideal images from lesions evaluated in real clinical practice. Fortunately, many of these limitations are being overcome by the scientific community as recent works show.
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Affiliation(s)
- C González-Cruz
- Servicio de Dermatología, Hospital Clínic de Barcelona, Barcelona, España
| | - M A Jofre
- Servicio de Dermatología, Hospital Clínic de Barcelona, Barcelona, España
| | - S Podlipnik
- Servicio de Dermatología, Hospital Clínic de Barcelona, Barcelona, España; Institut d'Investigacions Biomediques August Pi I Sunyer (IDIBAPS), Barcelona, España
| | - M Combalia
- Servicio de Dermatología, Hospital Clínic de Barcelona, Barcelona, España
| | - D Gareau
- Laboratory of Investigative Dermatology, The Rockefeller University, Nueva York, EE. UU
| | - M Gamboa
- Servicio de Dermatología, Hospital Clínic de Barcelona, Barcelona, España
| | - M G Vallone
- Servicio de Dermatología, Hospital Clínic de Barcelona, Barcelona, España
| | | | - A L Tamez-Peña
- Servicio de Dermatología, Hospital Clínic de Barcelona, Barcelona, España
| | - J Montoya
- Servicio de Dermatología, Hospital Clínic de Barcelona, Barcelona, España
| | | | - C Carrera
- Servicio de Dermatología, Hospital Clínic de Barcelona, Barcelona, España; Institut d'Investigacions Biomediques August Pi I Sunyer (IDIBAPS), Barcelona, España; CIBER en Enfermedades raras, Instituto de Salud Carlos III, Barcelona, España
| | - J Malvehy
- Servicio de Dermatología, Hospital Clínic de Barcelona, Barcelona, España; Institut d'Investigacions Biomediques August Pi I Sunyer (IDIBAPS), Barcelona, España; CIBER en Enfermedades raras, Instituto de Salud Carlos III, Barcelona, España
| | - S Puig
- Servicio de Dermatología, Hospital Clínic de Barcelona, Barcelona, España; Institut d'Investigacions Biomediques August Pi I Sunyer (IDIBAPS), Barcelona, España; CIBER en Enfermedades raras, Instituto de Salud Carlos III, Barcelona, España.
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Vallone MG, González VM, Casas JG, Larralde M. Dermoscopy of inflammatory breast cancer. An Bras Dermatol 2018; 93:289-290. [PMID: 29723370 PMCID: PMC5916411 DOI: 10.1590/abd1806-4841.20186806] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2016] [Accepted: 02/20/2017] [Indexed: 11/21/2022] Open
Abstract
Inflammatory breast cancer is an aggressive and infiltrative malignancy that is often misdiagnosed as an infection because of its symptoms and signs of inflammation, delaying proper diagnosis and treatment. We report a case of inflammatory breast cancer showing correlation between dermoscopic and histopathological diagnoses. We highlight the utility of dermoscopy for skin biopsy site selection.
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Vallone MG, Tell-Marti G, Potrony M, Rebollo-Morell A, Badenas C, Puig-Butille JA, Gimenez-Xavier P, Carrera C, Malvehy J, Puig S. Melanocortin 1 receptor (MC1R) polymorphisms' influence on size and dermoscopic features of nevi. Pigment Cell Melanoma Res 2017; 31:39-50. [PMID: 28950052 DOI: 10.1111/pcmr.12646] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2017] [Accepted: 09/01/2017] [Indexed: 01/02/2023]
Abstract
The melanocortin 1 receptor (MC1R) is a highly polymorphic gene. The loss-of-function MC1R variants ("R") have been strongly associated with red hair color phenotype and an increased melanoma risk. We sequenced the MC1R gene in 175 healthy individuals to assess the influence of MC1R on nevus phenotype. We identified that MC1R variant carriers had larger nevi both on the back [p-value = .016, adjusted for multiple parameters (adj. p-value)] and on the upper limbs (adj. p-value = .007). Specifically, we identified a positive association between the "R" MC1R variants and visible vessels in nevi [p-value = .033, corrected using the FDR method for multiple comparisons (corrected p-value)], dots and globules in nevi (corrected p-value = .033), nevi with eccentric hyperpigmentation (corrected p-value = .033), a high degree of freckling (adj. p-value = .019), and an associative trend with presence of blue nevi (corrected p-value = .120). In conclusion, the MC1R gene appears to influence the nevus phenotype.
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Affiliation(s)
- María Gabriela Vallone
- Dermatology Department, Melanoma Unit, Hospital Clínic, IDIBAPS (Institut d'Investigacions Biomèdiques August Pi i Sunyer), Barcelona, Spain.,Dermatology Department, Hospital Alemán, Buenos Aires, Argentina
| | - Gemma Tell-Marti
- Dermatology Department, Melanoma Unit, Hospital Clínic, IDIBAPS (Institut d'Investigacions Biomèdiques August Pi i Sunyer), Barcelona, Spain.,Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), ISCIII, Madrid, Spain
| | - Miriam Potrony
- Dermatology Department, Melanoma Unit, Hospital Clínic, IDIBAPS (Institut d'Investigacions Biomèdiques August Pi i Sunyer), Barcelona, Spain
| | - Aida Rebollo-Morell
- Dermatology Department, Melanoma Unit, Hospital Clínic, IDIBAPS (Institut d'Investigacions Biomèdiques August Pi i Sunyer), Barcelona, Spain
| | - Celia Badenas
- Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), ISCIII, Madrid, Spain.,Biochemical and Molecular Genetics Service, Hospital Clínic, IDIBAPS (Institut d'Investigacions Biomèdiques August Pi i Sunyer), Barcelona, Spain
| | - Joan Anton Puig-Butille
- Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), ISCIII, Madrid, Spain.,Biochemical and Molecular Genetics Service, Hospital Clínic, IDIBAPS (Institut d'Investigacions Biomèdiques August Pi i Sunyer), Barcelona, Spain
| | - Pol Gimenez-Xavier
- Dermatology Department, Melanoma Unit, Hospital Clínic, IDIBAPS (Institut d'Investigacions Biomèdiques August Pi i Sunyer), Barcelona, Spain.,Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), ISCIII, Madrid, Spain
| | - Cristina Carrera
- Dermatology Department, Melanoma Unit, Hospital Clínic, IDIBAPS (Institut d'Investigacions Biomèdiques August Pi i Sunyer), Barcelona, Spain.,Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), ISCIII, Madrid, Spain
| | - Josep Malvehy
- Dermatology Department, Melanoma Unit, Hospital Clínic, IDIBAPS (Institut d'Investigacions Biomèdiques August Pi i Sunyer), Barcelona, Spain.,Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), ISCIII, Madrid, Spain.,Medicine Department, Universitat de Barcelona, Barcelona, Spain
| | - Susana Puig
- Dermatology Department, Melanoma Unit, Hospital Clínic, IDIBAPS (Institut d'Investigacions Biomèdiques August Pi i Sunyer), Barcelona, Spain.,Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), ISCIII, Madrid, Spain.,Medicine Department, Universitat de Barcelona, Barcelona, Spain
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