Intraoperative Assessment of Surgical Margins Using Confocal Microscopy in Comparison With Reference Extemporaneous Examination (HISTOBLOC)

August 28, 2026 updated by: Institut de Cancérologie de Lorraine

Intraoperative Assessment of Surgical Margins Using Confocal Microscopy in Comparison With Reference Extemporaneous Examination (Pilot Study)

Study to evaluate the use of confocal microscopy for detecting resection margins in patients undergoing surgery for basal cell carcinoma of skin and squamous Cell Carcinoma of Head and Neck

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Study Type

Interventional

Enrollment (Actual)

42

Phase

  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • France
      • Vandœuvre-lès-Nancy, France, 54500
        • Institut de cancerologie de Lorraine

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  • Adult patient ≥18 years old
  • Squamous cell or basal cell tumor (1 to 4 cm) of mucous or cutaneous origin.
  • Patient whose surgical indication has been validated in a consultation meeting
  • Patients with scheduled surgery
  • WHO< or =2
  • ASA < 3
  • Patient affiliated to the social security system
  • Patient has understood, signed and dated the consent form.

Exclusion Criteria:

  • History of irradiation in the surgical area
  • Women who are pregnant or who are breast-feeding.
  • Persons deprived of their liberty or under guardianship (including curators)

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Other
  • Allocation: N/A
  • Interventional Model: Single Group Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: Microscopy confocal
Other: microscopy confocal (Histolog Scanner)

Surgical margins of tumor samples will be examined by conventional histopathology (H&E) and confocal microscopy (Histolog® scanner, SamanTree Medical, Switzerland).

Depending on the histopathological result obtained between the two methods, the patient may benefit directly from early surgery if the experimental result confirms the presence of positive margins (excluding the learning curve).

A learning curve will be established over the first fifteen surgeries, enabling surgical teams to gain experience and systematize specimen flattening. This learning curve will also enable reference images to be produced. The procedure will be carried out by the surgeon and the pathologist in the operating room during this phase.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Sensitivity and Specificity of Confocal Microscopy Diagnosis Compared to Gold Standard
Time Frame: 1 day

The concordance of intraoperative diagnosis between the two methods will be assessed by the condition of the margins of surgical specimens. Diagnostic accuracy will be measured by the sensitivity and specificity of confocal microscopy, using conventional histology reports from extemporaneous examination as the gold standard.

  • negative margins (absence of tumour cells) ;
  • positive margins (presence of tumour cells).
1 day

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Institut de Cancérologie de Lorraine

Investigators

  • Principal Investigator: GILLES DOLIVET, MD, Institut de cancerologie de Lorraine

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

November 28, 2023

Primary Completion (Actual)

June 21, 2025

Study Completion (Actual)

June 21, 2026

Study Registration Dates

First Submitted

June 27, 2023

First Submitted That Met QC Criteria

July 6, 2023

First Posted (Actual)

July 7, 2023

Study Record Updates

Last Update Posted (Actual)

September 1, 2026

Last Update Submitted That Met QC Criteria

August 28, 2026

Last Verified

August 1, 2026

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • 2023-A00818-37

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

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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