Comparison of 3 in Vivo Microscopic Imaging Techniques for the Diagnosis of Pigmented Tumors (Micro3)

Comparison of 3 in Vivo Microscopic Imaging Techniques for the Diagnosis of Pigmented Tumors. Monocentric Retrospective Study of 170 Tumors

Reflectance confocal microscopy (RCM) is the reference in vivo imaging technique for identifying malignant melanocytic tumors prior to surgical excision. However, it is not widely used due to its high cost and highly technical and time-consuming nature.

In addition to RCM, we currently use 2 less expensive dermatoscopes that also allow in vivo diagnosis: super-high magnification dermoscopy (D400) and Fluorescence-Advanced videodermatoscopy (FAV).

Study Overview

• Status: Completed
• Conditions: Melanoma; Nevus; Lentigo; Basal Cell Carcinoma; Seborrheic Keratosis; Lentigo Maligna
• Intervention / Treatment: Diagnostic test: Fluorescence-Advanced videodermatoscopy; Diagnostic test: Reflectance confocal microscopy; Diagnostic test: Super-high magnification dermoscopy

Detailed Description

Several studies have demonstrated their interest in the in vivo diagnosis of melanocytic tumors, but without any comparison between these methods.

In our current practice, many patients have benefited from these 3 imaging modalities for benign and malignant lesions.

Therefore, our aim is to analyze these images and compare their performance in the diagnosis of benign and malignant pigmented lesions.

• Study Type: Observational
• Enrollment (Actual): 161

Contacts and Locations

Study Locations

• France
  • Saint Etienne, France, 42000
    • CHU de Saint Etienne

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: Child; Adult; Older Adult
• Accepts Healthy Volunteers: No

• Sampling Method: Non-Probability Sample

Study Population

Patients with a pigmented skin lesion of more than 3mm diameter which have benefited systematically of all 3 imaging techniques at the same time, followed by either a surgical excision or annual imaging monitoring.

Description

Inclusion Criteria:

• Patients with a pigmented skin lesion of more than 3mm diameter which have benefited systematically of all 3 imaging techniques at the same time, followed by either a surgical excision or annual imaging monitoring.

Exclusion Criteria:

• Bad quality images
• Insufficient number of images
• Uncertain diagnosis given by the pathologist
• Refusal

Study Plan

How is the study designed?

Number of groups / cohorts

1

Cohorts and Interventions

Group / Cohort

Intervention / Treatment

Patients with a pigmented skin lesion; Patients with a pigmented skin lesion of more than 3mm diameter which have benefited systematically of all 3 imaging techniques at the same time, followed by either a surgical excision or annual imaging monitoring.

Diagnostic test: Fluorescence-Advanced videodermatoscopy; Datas collected : Presence or absence of atypical roundish cell, dendritic cell, atypical nests, points, folliculotropism, blue homogenous zone, regular honeycomb pattern. Between 10 and 60 images taken by a hand-held camera set directly on the skin lesion, with an oily interface.; Diagnostic test: Reflectance confocal microscopy; Datas collected : Presence or absence of atypical roundish cell, dendritic cell, atypical nests, points, folliculotropism, blue homogenous zone, regular honeycomb pattern. Between 10 and 60 images taken by a hand-held camera set directly on the skin lesion, with an oily interface.; Diagnostic test: Super-high magnification dermoscopy; Datas collected : Presence or absence of atypical roundish cell, dendritic cell, atypical nests, points, folliculotropism, blue homogenous zone, regular honeycomb pattern. Between 10 and 60 images taken by a hand-held camera set directly on the skin lesion, with an oily interface.

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
To analyse the picture to assess the relevance of each technique for the diagnostic of malignant and benign pigmented lesions.	The nature of the tumor is diagnosed by an imaging technique if we can find on the images the main characteristics belonging to a certain tumor. After this we can calculate the sensitivity, specificity of each technique.	Day 1

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Comparison of different imaging techniques	To compare the performance of combination of 2 techniques to assess if the performance is better than 1 technique alone.	Day 1

Collaborators and Investigators

• Sponsor: Centre Hospitalier Universitaire de Saint Etienne
• Investigators: Principal Investigator: Jean-Luc PERROT, MD PhD, CHU SAINT-ETIENNE

Study record dates

Study Major Dates

• Study Start (Actual): November 2, 2022
• Primary Completion (Actual): May 1, 2023
• Study Completion (Actual): May 1, 2023

Study Registration Dates

• First Submitted: September 14, 2023
• First Submitted That Met QC Criteria: September 14, 2023
• First Posted (Actual): September 21, 2023

Study Record Updates

• Last Update Posted (Actual): September 21, 2023
• Last Update Submitted That Met QC Criteria: September 14, 2023
• Last Verified: August 1, 2023

More Information

Terms related to this study

• Keywords: Reflectance confocal microscopy; Melanoma diagnosis; Diagnosis Imaging; Fluorescence-Advanced videodermatoscopy; Super-high magnification dermoscopy
• Additional Relevant MeSH Terms: Skin Diseases; Neoplasms by Histologic Type; Neoplasms; Carcinoma; Neoplasms, Glandular and Epithelial; Neuroectodermal Tumors; Neoplasms, Germ Cell and Embryonal; Neoplasms, Nerve Tissue; Neuroendocrine Tumors; Nevi and Melanomas; Hyperpigmentation; Pigmentation Disorders; Neoplasms, Basal Cell; Melanosis; Melanoma; Keratosis; Lentigo; Hutchinson's Melanotic Freckle; Carcinoma, Basal Cell; Keratosis, Seborrheic
• Other Study ID Numbers: IRBN1142023/CHUSTE

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: NO

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No