Atlas of Mohs and Frozen Section Cutaneous Pathology Instruction Manual

1. Introduction

This manual provides guidance for utilizing the Atlas of Mohs and Frozen Section Cutaneous Pathology, Second Edition. It serves as a practical guide for microscopic analysis, diagnosis, and discrimination of common and problematic cutaneous neoplasms, particularly relevant for the Mohs surgical procedure.

The atlas details common and uncommon cutaneous neoplasms, offering a reference for established practitioners and a review for those in training. It incorporates new frozen section specimens, current diagnostic guidelines, and advancements in tissue staining.

Figure 1.1: Front cover of the Atlas, displaying the title, edition, and editors.

2. About the Editors

• Michael B. Morgan, MD: Managing Director, Carepath Diagnostics; Professor of Pathology, University of South Florida College of Medicine; Director of Dermatopathology, Dermatology Solutions Group.
• James M. Spencer, MD, MS: Spencer Dermatology and Surgery Center; Associate Professor of Clinical Dermatology, Mount Sinai School of Medicine.
• John R. Hamill, Jr., MD: Founder and Director, Gulf Coast Dermatology; Clinical Professor, University of South Florida; Director, Advance Dermatological Surgery, James A. Haley Veterans Hospital.
• Rebecca Thornhill, MD: Greenville Health System, University of South Carolina.

3. Navigating the Atlas

The atlas is organized into chapters covering various dermatologic entities. Each chapter provides detailed information and high-resolution figures to aid in diagnosis.

3.1. Key Features

• Diagnosis of basic and routine dermatologic entities.
• Diagnosis and distinction of rare and/or deadly neoplasms (e.g., dermatofibrosarcoma protuberans, Merkel cell carcinoma).
• Discussion of techniques including immunohistochemistry.

4. Operating and Interpretation

This section outlines the recommended approach for interpreting the frozen sections and applying the diagnostic guidelines presented in the atlas.

4.1. Microscopic Analysis

Focus on the high-resolution figures provided. Compare observed specimens with the detailed images and descriptions to identify key pathological features.

4.2. Diagnostic Guidelines

Utilize the most current diagnostic guidelines discussed within each chapter. Pay attention to the nuances that distinguish similar conditions.

5. Troubleshooting Guide

A dedicated chapter within the atlas provides a troubleshooting guide for quality control of the frozen section technique. This section addresses common issues encountered during preparation and interpretation.

5.1. Common Issues Addressed

• Artifacts in frozen sections.
• Challenges in distinguishing specific cell types.
• Optimizing staining techniques for clarity.

6. Self-Study Tools

An additional chapter is included with self-study tools. Readers can test their knowledge using various images presented in a multiple-choice answer format, followed by a discussion of the correct answer.

7. Specifications