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Lindholm V, Annala L, Koskenmies S, Pitkänen S, Isoherranen K, Järvinen A, Jeskanen L, Pölönen I, Ranki A, Raita‐Hakola A, Salmivuori M. Discriminating basal cell carcinoma and Bowen's disease from benign skin lesions with a 3D hyperspectral imaging system and convolutional neural networks. Skin Res Technol 2024; 30:e13677. [PMID: 38558486 PMCID: PMC10982671 DOI: 10.1111/srt.13677] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2023] [Accepted: 02/12/2024] [Indexed: 04/04/2024]
Affiliation(s)
- Vivian Lindholm
- Department of Dermatology and AllergologyUniversity of Helsinki and Helsinki University HospitalHelsinkiFinland
| | - Leevi Annala
- Faculty of Information TechnologyUniversity of JyväskyläJyväskyläFinland
- Department of Food and NutritionUniversity of HelsinkiHelsinkiFinland
- Department of Computer ScienceUniversity of HelsinkiHelsinkiFinland
| | - Sari Koskenmies
- Department of Dermatology and AllergologyUniversity of Helsinki and Helsinki University HospitalHelsinkiFinland
| | - Sari Pitkänen
- Department of Dermatology and AllergologyUniversity of Helsinki and Helsinki University HospitalHelsinkiFinland
| | - Kirsi Isoherranen
- Department of Dermatology and AllergologyUniversity of Helsinki and Helsinki University HospitalHelsinkiFinland
| | - Anna Järvinen
- Department of Dermatology and AllergologyUniversity of Helsinki and Helsinki University HospitalHelsinkiFinland
| | - Leila Jeskanen
- Department of Dermatology and AllergologyUniversity of Helsinki and Helsinki University HospitalHelsinkiFinland
| | - Ilkka Pölönen
- Faculty of Information TechnologyUniversity of JyväskyläJyväskyläFinland
| | - Annamari Ranki
- Department of Dermatology and AllergologyUniversity of Helsinki and Helsinki University HospitalHelsinkiFinland
| | | | - Mari Salmivuori
- Department of Dermatology and AllergologyUniversity of Helsinki and Helsinki University HospitalHelsinkiFinland
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2
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Lindholm V, Salmivuori M, Hahtola S, Kerttu Mäkelä, Pitkänen S, Isoherranen K. Ablative Fractional Laser Enhances Artificial or Natural Daylight Photodynamic Therapy of Actinic Field Cancerization: A Randomized and Investigator-initiated Half-side Comparative Study. Acta Derm Venereol 2023; 103:adv6579. [PMID: 37584092 PMCID: PMC10442926 DOI: 10.2340/actadv.v103.6579] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Accepted: 05/31/2023] [Indexed: 08/17/2023] Open
Abstract
Artificial daylight photodynamic therapy is a near-painless treatment for actinic keratoses, which can be performed indoors using a controlled light dose. Daylight photodynamic therapy is approved only for treatment of grade I-II actinic keratoses. The aim of this study was to evaluate whether fractional laser pre-treatment improves the outcomes of daylight photodynamic therapy for actinic keratoses of all grades. In addition, the study compared the outcomes of artificial and natural daylight photodynamic therapy. This randomized single-blinded split-side comparative study included 60 patients with ≥ 2 actinic keratoses of the head. Fractional laser pre-treatment was assigned randomly for actinic keratoses on 1 side of the head and, subsequently, the entire treatment area was treated with artificial or natural daylight photodynamic therapy. Fractional laser-mediated daylight photodynamic therapy achieved significantly higher complete clearance (50.0% vs 30.3%, p = 0.04), partial clearance (78.6% vs 50.0%, p < 0.01) and lesion-specific clearance (86.2% vs 70.2%, p < 0.01) than daylight photodynamic therapy alone at the 6-month follow-up. No significant differences were found in the outcomes of artificial vs natural daylight photodynamic therapy or grade I lesions vs grade II-III lesions. Thus, fractional laser pre-treatment appears to significantly increase the efficacy of artificial and natural daylight photodynamic therapy, and to be suitable for treatment of actinic keratoses of all grades.
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Affiliation(s)
- Vivian Lindholm
- Department of Dermatology, Allergology and Venereology, Helsinki University Hospital and University of Helsinki, Meilahdentie 2, FIN-00250 Helsinki, Finland.
| | - Mari Salmivuori
- Department of Dermatology, Allergology and Venereology, Helsinki University Hospital and University of Helsinki, Meilahdentie 2, FIN-00250 Helsinki, Finland
| | - Sonja Hahtola
- Department of Dermatology, Allergology and Venereology, Helsinki University Hospital and University of Helsinki, Meilahdentie 2, FIN-00250 Helsinki, Finland
| | - Kerttu Mäkelä
- Department of Dermatology, Allergology and Venereology, Helsinki University Hospital and University of Helsinki, Meilahdentie 2, FIN-00250 Helsinki, Finland
| | - Sari Pitkänen
- Department of Dermatology, Allergology and Venereology, Helsinki University Hospital and University of Helsinki, Meilahdentie 2, FIN-00250 Helsinki, Finland
| | - Kirsi Isoherranen
- Department of Dermatology, Allergology and Venereology, Helsinki University Hospital and University of Helsinki, Meilahdentie 2, FIN-00250 Helsinki, Finland
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Lindholm V, Raita-Hakola AM, Annala L, Salmivuori M, Jeskanen L, Saari H, Koskenmies S, Pitkänen S, Pölönen I, Isoherranen K, Ranki A. Differentiating Malignant from Benign Pigmented or Non-Pigmented Skin Tumours-A Pilot Study on 3D Hyperspectral Imaging of Complex Skin Surfaces and Convolutional Neural Networks. J Clin Med 2022; 11:jcm11071914. [PMID: 35407522 PMCID: PMC8999463 DOI: 10.3390/jcm11071914] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2022] [Accepted: 03/28/2022] [Indexed: 02/08/2023] Open
Abstract
Several optical imaging techniques have been developed to ease the burden of skin cancer disease on our health care system. Hyperspectral images can be used to identify biological tissues by their diffuse reflected spectra. In this second part of a three-phase pilot study, we used a novel hand-held SICSURFIS Spectral Imager with an adaptable field of view and target-wise selectable wavelength channels to provide detailed spectral and spatial data for lesions on complex surfaces. The hyperspectral images (33 wavelengths, 477–891 nm) provided photometric data through individually controlled illumination modules, enabling convolutional networks to utilise spectral, spatial, and skin-surface models for the analyses. In total, 42 lesions were studied: 7 melanomas, 13 pigmented and 7 intradermal nevi, 10 basal cell carcinomas, and 5 squamous cell carcinomas. All lesions were excised for histological analyses. A pixel-wise analysis provided map-like images and classified pigmented lesions with a sensitivity of 87% and a specificity of 93%, and 79% and 91%, respectively, for non-pigmented lesions. A majority voting analysis, which provided the most probable lesion diagnosis, diagnosed 41 of 42 lesions correctly. This pilot study indicates that our non-invasive hyperspectral imaging system, which involves shape and depth data analysed by convolutional neural networks, is feasible for differentiating between malignant and benign pigmented and non-pigmented skin tumours, even on complex skin surfaces.
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Affiliation(s)
- Vivian Lindholm
- Department of Dermatology and Allergology, University of Helsinki and Helsinki University Hospital, 00290 Helsinki, Finland; (M.S.); (L.J.); (S.K.); (S.P.); (K.I.); (A.R.)
- Correspondence: (V.L.); (A.-M.R.-H.); Tel.: +358-9471-86355 (V.L.)
| | - Anna-Maria Raita-Hakola
- Faculty of Information Technology, University of Jyväskylä, 40100 Jyväskylä, Finland; (L.A.); (I.P.)
- Correspondence: (V.L.); (A.-M.R.-H.); Tel.: +358-9471-86355 (V.L.)
| | - Leevi Annala
- Faculty of Information Technology, University of Jyväskylä, 40100 Jyväskylä, Finland; (L.A.); (I.P.)
| | - Mari Salmivuori
- Department of Dermatology and Allergology, University of Helsinki and Helsinki University Hospital, 00290 Helsinki, Finland; (M.S.); (L.J.); (S.K.); (S.P.); (K.I.); (A.R.)
| | - Leila Jeskanen
- Department of Dermatology and Allergology, University of Helsinki and Helsinki University Hospital, 00290 Helsinki, Finland; (M.S.); (L.J.); (S.K.); (S.P.); (K.I.); (A.R.)
| | - Heikki Saari
- VTT Technical Research Centre of Finland, 02150 Espoo, Finland;
| | - Sari Koskenmies
- Department of Dermatology and Allergology, University of Helsinki and Helsinki University Hospital, 00290 Helsinki, Finland; (M.S.); (L.J.); (S.K.); (S.P.); (K.I.); (A.R.)
| | - Sari Pitkänen
- Department of Dermatology and Allergology, University of Helsinki and Helsinki University Hospital, 00290 Helsinki, Finland; (M.S.); (L.J.); (S.K.); (S.P.); (K.I.); (A.R.)
| | - Ilkka Pölönen
- Faculty of Information Technology, University of Jyväskylä, 40100 Jyväskylä, Finland; (L.A.); (I.P.)
| | - Kirsi Isoherranen
- Department of Dermatology and Allergology, University of Helsinki and Helsinki University Hospital, 00290 Helsinki, Finland; (M.S.); (L.J.); (S.K.); (S.P.); (K.I.); (A.R.)
| | - Annamari Ranki
- Department of Dermatology and Allergology, University of Helsinki and Helsinki University Hospital, 00290 Helsinki, Finland; (M.S.); (L.J.); (S.K.); (S.P.); (K.I.); (A.R.)
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Räsänen J, Salmivuori M, Pölönen I, Grönroos M, Neittaanmäki N. Hyperspectral Imaging Reveals Spectral Differences and Can Distinguish Malignant Melanoma from Pigmented Basal Cell Carcinomas: A Pilot Study. Acta Derm Venereol 2021; 101:adv00405. [PMID: 33521835 PMCID: PMC9366698 DOI: 10.2340/00015555-3755] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [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] [Indexed: 11/17/2022] Open
Abstract
Pigmented basal cell carcinomas can be difficult to distinguish from melanocytic tumours. Hyperspectral imaging is a non-invasive imaging technique that measures the reflectance spectra of skin in vivo. The aim of this prospective pilot study was to use a convolutional neural network classifier in hyperspectral images for differential diagnosis between pigmented basal cell carcinomas and melanoma. A total of 26 pigmented lesions (10 pigmented basal cell carcinomas, 12 melanomas in situ, 4 invasive melanomas) were imaged with hyperspectral imaging and excised for histopathological diagnosis. For 2-class classifier (melanocytic tumours vs pigmented basal cell carcinomas) using the majority of the pixels to predict the class of the whole lesion, the results showed a sensitivity of 100% (95% confidence interval 81–100%), specificity of 90% (95% confidence interval 60–98%) and positive predictive value of 94% (95% confidence interval 73–99%). These results indicate that a convolutional neural network classifier can differentiate melanocytic tumours from pigmented basal cell carcinomas in hyperspectral images. Further studies are warranted in order to confirm these preliminary results, using larger samples and multiple tumour types, including all types of melanocytic lesions.
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Affiliation(s)
- Janne Räsänen
- Department of Dermatology, Tampere University Hospital, FIN-33530 Tampere, Finland. E-mail:
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5
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Salmivuori M, Grönroos M, Tani T, Pölönen I, Räsänen J, Annala L, Snellman E, Neittaanmäki N. Hexyl aminolevulinate, 5-aminolevulinic acid nanoemulsion and methyl aminolevulinate in photodynamic therapy of non-aggressive basal cell carcinomas: A non-sponsored, randomized, prospective and double-blinded trial. J Eur Acad Dermatol Venereol 2020; 34:2781-2788. [PMID: 32196772 DOI: 10.1111/jdv.16357] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2019] [Accepted: 02/28/2020] [Indexed: 11/27/2022]
Abstract
BACKGROUND In the photodynamic therapy (PDT) of non-aggressive basal cell carcinomas (BCCs), 5-aminolevulinic acid nanoemulsion (BF-200ALA) has shown non-inferior efficacy when compared with methyl aminolevulinate (MAL), a widely used photosensitizer. Hexyl aminolevulinate (HAL) is an interesting alternative photosensitizer. To our knowledge, this is the first study using HAL-PDT in the treatment of BCCs. OBJECTIVES To compare the histological clearance, tolerability (pain and post-treatment reaction) and cosmetic outcome of MAL, BF-200 ALA and low-concentration HAL in the PDT of non-aggressive BCCs. METHODS Ninety-eight histologically verified non-aggressive BCCs met the inclusion criteria, and 54 patients with 95 lesions completed the study. The lesions were randomized to receive LED-PDT in two repeated treatments with MAL, BF-200 ALA or HAL. Efficacy was assessed both clinically and confirmed histologically at three months by blinded observers. Furthermore, cosmetic outcome, pain, post-treatment reactions fluorescence and photobleaching were evaluated. RESULTS According to intention-to-treat analyses, the histologically confirmed lesion clearance was 93.8% (95% confidence interval [CI] = 79.9-98.3) for MAL, 90.9% (95% CI = 76.4-96.9) for BF-200 ALA and 87.9% (95% CI = 72.7-95.2) for HAL, with no differences between the arms (P = 0.84). There were no differences between the arms as regards pain, post-treatment reactions or cosmetic outcome. CONCLUSIONS Photodynamic therapy with low-concentration HAL and BF-200 ALA has a similar efficacy, tolerability and cosmetic outcome compared to MAL. HAL is an interesting new option in dermatological PDT, since good efficacy is achieved with a low concentration.
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Affiliation(s)
- M Salmivuori
- Department of Dermatology and Allergology, Päijät-Häme Social and Health Care Group, Lahti, Finland.,Department of Dermatology, Faculty of Medicine and Health Technology, Tampere University Hospital and Tampere University, Tampere, Finland.,Department of Dermatology and Allergology, Helsinki University Hospital, Helsinki, Finland
| | - M Grönroos
- Department of Dermatology and Allergology, Päijät-Häme Social and Health Care Group, Lahti, Finland.,Department of Dermatology, Faculty of Medicine and Health Technology, Tampere University Hospital and Tampere University, Tampere, Finland
| | - T Tani
- Department of Dermatology and Allergology, Päijät-Häme Social and Health Care Group, Lahti, Finland.,HUSLAB Laboratory Services, Helsinki University Hospital, Hospital District of Helsinki and Uusimaa, Helsinki, Finland
| | - I Pölönen
- Faculty of Information Technology, University of Jyväskylä, Jyväskylä, Finland
| | - J Räsänen
- Department of Dermatology and Allergology, Päijät-Häme Social and Health Care Group, Lahti, Finland.,Department of Dermatology, Faculty of Medicine and Health Technology, Tampere University Hospital and Tampere University, Tampere, Finland
| | - L Annala
- Faculty of Information Technology, University of Jyväskylä, Jyväskylä, Finland
| | - E Snellman
- Department of Dermatology, Faculty of Medicine and Health Technology, Tampere University Hospital and Tampere University, Tampere, Finland.,Department of Dermatology, Satasairaala, Pori, Finland
| | - N Neittaanmäki
- Departments of Pathology and Dermatology, Institutes of Biomedicine and Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
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Srinivas N, Neittaanmäki N, Heidenreich B, Rachakonda S, Karppinen TT, Grönroos M, Tani TT, Salmivuori M, Snellman E, Hemminki K, Kumar R. TERT promoter mutations in actinic keratosis before and after treatment. Int J Cancer 2020; 146:2932-2934. [PMID: 31970758 DOI: 10.1002/ijc.32878] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2019] [Revised: 01/08/2020] [Accepted: 01/14/2020] [Indexed: 11/07/2022]
Affiliation(s)
- Nalini Srinivas
- Division of Functional Genome Analysis, German Cancer Research Center, Heidelberg, Germany
- Division of Molecular Genetic Epidemiology, German Cancer Research Center, Heidelberg, Germany
| | - Noora Neittaanmäki
- Institute of Biomedicine and Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
- Department of Dermatology and Allergology, Päijät-Häme Social and Health Care group, Lahti, Finland
| | - Barbara Heidenreich
- Division of Molecular Genetic Epidemiology, German Cancer Research Center, Heidelberg, Germany
| | - Sivaramakrishna Rachakonda
- Division of Functional Genome Analysis, German Cancer Research Center, Heidelberg, Germany
- Division of Molecular Genetic Epidemiology, German Cancer Research Center, Heidelberg, Germany
| | - Toni T Karppinen
- Department of Dermatology and Allergology, Päijät-Häme Social and Health Care group, Lahti, Finland
- Department of Dermatology and Allergology, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Mari Grönroos
- Department of Dermatology and Allergology, Päijät-Häme Social and Health Care group, Lahti, Finland
| | - Taneli T Tani
- Department of Pathology, Päijät-Häme Social and Health Care group, Lahti, Finland
| | - Mari Salmivuori
- Department of Dermatology and Allergology, Päijät-Häme Social and Health Care group, Lahti, Finland
- Department of Dermatology and Allergology, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Erna Snellman
- Department of Dermatology and Allergology, Päijät-Häme Social and Health Care group, Lahti, Finland
- Department of Dermatology, Tampere University and Tampere University Hospital, Tampere, Finland
| | - Kari Hemminki
- Division of Molecular Genetic Epidemiology, German Cancer Research Center, Heidelberg, Germany
- Department of Genetics and Pathology, International Hereditary Cancer Center, Pomeranian Medical University, Szczecin, Poland
- School of Public health, Zhejiang University, Hangzhou, China
- Faculty of Medicine and Biomedical Center in Pilsen, Charles University in Prague, Pilsen, Czech Republic
| | - Rajiv Kumar
- Division of Functional Genome Analysis, German Cancer Research Center, Heidelberg, Germany
- Division of Molecular Genetic Epidemiology, German Cancer Research Center, Heidelberg, Germany
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Räsänen J, Neittaanmäki N, Ylitalo L, Hagman J, Rissanen P, Ylianttila L, Salmivuori M, Snellman E, Grönroos M. 光化性角化病日光光动力疗法:对比 BF‐200 ALA 与 MAL 的多中心试验. Br J Dermatol 2019. [DOI: 10.1111/bjd.18191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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8
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Räsänen J, Neittaanmäki N, Ylitalo L, Hagman J, Rissanen P, Ylianttila L, Salmivuori M, Snellman E, Grönroos M. DL‐PDT for AK: multicentre trial comparing BF‐200 ALA with MAL. Br J Dermatol 2019. [DOI: 10.1111/bjd.18181] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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9
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Räsänen J, Neittaanmäki N, Ylitalo L, Hagman J, Rissanen P, Ylianttila L, Salmivuori M, Snellman E, Grönroos M. 5‐aminolaevulinic acid nanoemulsion is more effective than methyl‐5‐aminolaevulinate in daylight photodynamic therapy for actinic keratosis: a nonsponsored randomized double‐blind multicentre trial. Br J Dermatol 2019; 181:265-274. [DOI: 10.1111/bjd.17311] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/04/2018] [Indexed: 01/05/2023]
Affiliation(s)
- J.E. Räsänen
- Department of Dermatology Joint Authority for Päijät‐Häme Health and Wellbeing Lahti Finland
- Department of Dermatology Faculty of Medicine and Life Sciences Tampere University Hospital and University of Tampere Tampere Finland
| | - N. Neittaanmäki
- Departments of Pathology and Dermatology Institutes of Biomedicine and Clinical Sciences Sahlgrenska Academy University of Gothenburg Gothenburg Sweden
| | - L. Ylitalo
- Department of Dermatology Faculty of Medicine and Life Sciences Tampere University Hospital and University of Tampere Tampere Finland
| | - J. Hagman
- Department of Dermatology Vaasa Central Hospital Vaasa Finland
- Department of Dermatology Faculty of Medicine University of Turku Turku Finland
| | - P. Rissanen
- Faculty of Social Sciences (Health Sciences) University of Tampere Tampere Finland
| | - L. Ylianttila
- Radiation and Nuclear Safety Authority of Finland (STUK) Helsinki Finland
| | - M. Salmivuori
- Department of Dermatology Joint Authority for Päijät‐Häme Health and Wellbeing Lahti Finland
| | - E. Snellman
- Department of Dermatology Faculty of Medicine and Life Sciences Tampere University Hospital and University of Tampere Tampere Finland
| | - M. Grönroos
- Department of Dermatology Joint Authority for Päijät‐Häme Health and Wellbeing Lahti Finland
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Salmivuori M, Neittaanmäki N, Pölönen I, Jeskanen L, Snellman E, Grönroos M. Hyperspectral imaging system in the delineation of Ill-defined basal cell carcinomas: a pilot study. J Eur Acad Dermatol Venereol 2018; 33:71-78. [PMID: 29846972 DOI: 10.1111/jdv.15102] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2018] [Accepted: 05/23/2018] [Indexed: 01/02/2023]
Abstract
BACKGROUND Basal cell carcinoma (BCC) is the most common skin cancer in the Caucasian population. Eighty per cent of BCCs are located on the head and neck area. Clinically ill-defined BCCs often represent histologically aggressive subtypes, and they can have subtle subclinical extensions leading to recurrence and the need for re-excisions. OBJECTIVES The aim of this pilot study was to test the feasibility of a hyperspectral imaging system (HIS) in vivo in delineating the preoperatively lateral margins of ill-defined BCCs on the head and neck area. METHODS Ill-defined BCCs were assessed clinically with a dermatoscope, photographed and imaged with HIS. This was followed by surgical procedures where the BCCs were excised at the clinical border and the marginal strip separately. HIS, with a 12-cm2 field of view and fast data processing, records a hyperspectral graph for every pixel in the imaged area, thus creating a data cube. With automated computational modelling, the spectral data are converted into localization maps showing the tumour borders. Interpretation of these maps was compared to the histologically verified tumour borders. RESULTS Sixteen BCCs were included. Of these cases, 10 of 16 were the aggressive subtype of BCC and 6 of 16 were nodular, superficial or a mixed type. HIS delineated the lesions more accurately in 12 of 16 of the BCCs compared to the clinical evaluation (4 of 16 wider and 8 of 16 smaller by HIS). In 2 of 16 cases, the HIS-delineated lesion was wider without histopathological confirmation. In 2 of 16 cases, HIS did not detect the histopathologically confirmed subclinical extension. CONCLUSIONS HIS has the potential to be an easy and fast aid in the preoperative delineation of ill-defined BCCs, but further adjustment and larger studies are warranted for an optimal outcome.
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Affiliation(s)
- M Salmivuori
- Department of Dermatology and Allergology, Joint Authority for Päijät-Häme Health and Wellbeing, Lahti, Finland.,Department of Dermatology, Tampere University and Tampere University Hospital, Tampere, Finland
| | - N Neittaanmäki
- Departments of Pathology and Dermatology, Institutes of Biomedicine and Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - I Pölönen
- Faculty of Mathematical Information Technology, University of Jyväskylä, Jyväskylä, Finland
| | - L Jeskanen
- Department of Dermatology and Allergology, Helsinki University Central Hospital, Helsinki, Finland
| | - E Snellman
- Department of Dermatology and Allergology, Joint Authority for Päijät-Häme Health and Wellbeing, Lahti, Finland.,Department of Dermatology, Tampere University and Tampere University Hospital, Tampere, Finland
| | - M Grönroos
- Department of Dermatology and Allergology, Joint Authority for Päijät-Häme Health and Wellbeing, Lahti, Finland
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Neittaanmäki N, Salmivuori M, Pölönen I, Jeskanen L, Ranki A, Saksela O, Snellman E, Grönroos M. Hyperspectral imaging in detecting dermal invasion in lentigo maligna melanoma. Br J Dermatol 2017; 177:1742-1744. [DOI: 10.1111/bjd.15267] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- N. Neittaanmäki
- Department of Clinical Pathology; Sahlgrenska University Hospital; Institute of Biomedicine at the Sahlgrenska Academy; University of Gothenburg; Gothenburg Sweden
| | - M. Salmivuori
- Department of Dermatology and Allergology; Päijät-Häme Social and Health Care Group; Lahti Finland
| | - I. Pölönen
- Department of Mathematical Information Technology; University of Jyväskylä; Jyväskylä Finland
| | - L. Jeskanen
- Departments of Dermatology and Allergology; University of Helsinki and Helsinki University Hospital; Helsinki Finland
| | - A. Ranki
- Departments of Dermatology and Allergology; University of Helsinki and Helsinki University Hospital; Helsinki Finland
| | - O. Saksela
- Departments of Dermatology and Allergology; University of Helsinki and Helsinki University Hospital; Helsinki Finland
| | - E. Snellman
- Department of Dermatology; University of Tampere and Tampere University Hospital; Tampere Finland
| | - M. Grönroos
- Department of Dermatology and Allergology; Päijät-Häme Social and Health Care Group; Lahti Finland
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