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Multiplex Immunohistochemical Analysis of the Spatial Immune Cell Landscape of the Tumor Microenvironment
Published on: August 18, 2023
Data set for pathology reporting of cutaneous invasive melanoma: recommendations from the international collaboration
Richard A Scolyer1, Meagan J Judge, Alan Evans
1*Melanoma Institute Australia Disciplines of †Pathology **Surgery, Sydney Medical School, The University of Sydney Departments of ‡Tissue Pathology and Diagnostic Oncology ††Melanoma and Surgical Oncology, Royal Prince Alfred Hospital §Royal College of Pathologists of Australasia, Sydney, NSW ¶¶Royal Adelaide Hospital and Flinders University, Adelaide, SA, Australia ∥Department of Pathology, Ninewells Hospital and Medical School, Dundee, Scotland ¶Cedars-Sinai Medical Center, Los Angeles, CA #Departments of Pathology and Dermatology, University of Texas-MD Anderson Cancer Center, Houston, TX ‡‡Department of Pathology and Laboratory Medicine, University of Calgary, Calgary, AB ∥∥Department of Pathology, Capital District Health Authority and Dalhousie University, Halifax, NS, Canada §§Royal Victoria Hospital, Belfast, UK.
Abstract:
An accurate and complete pathology report is critical for the optimal management of cutaneous melanoma patients. Protocols for the pathologic reporting of melanoma have been independently developed by the Royal College of Pathologists of Australasia (RCPA), Royal College of Pathologists (United Kingdom) (RCPath), and College of American Pathologists (CAP). In this study, data sets, checklists, and structured reporting protocols for pathologic examination and reporting of cutaneous melanoma were analyzed by an international panel of melanoma pathologists and clinicians with the aim of developing a common, internationally agreed upon, evidence-based data set. The International Collaboration on Cancer Reporting cutaneous melanoma expert review panel analyzed the existing RCPA, RCPath, and CAP data sets to develop a protocol containing "required" (mandatory/core) and "recommended" (nonmandatory/noncore) elements. Required elements were defined as those that had agreed evidentiary support at National Health and Medical Research Council level III-2 level of evidence or above and that were unanimously agreed upon by the review panel to be essential for the clinical management, staging, or assessment of the prognosis of melanoma or fundamental for pathologic diagnosis. Recommended elements were those considered to be clinically important and recommended for good practice but with lesser degrees of supportive evidence. Sixteen core/required data elements for cutaneous melanoma pathology reports were defined (with an additional 4 core/required elements for specimens received with lymph nodes). Eighteen additional data elements with a lesser level of evidentiary support were included in the recommended data set. Consensus response values (permitted responses) were formulated for each data item. Development and agreement of this evidence-based protocol at an international level was accomplished in a timely and efficient manner, and the processes described herein may facilitate the development of protocols for other tumor types. Widespread utilization of an internationally agreed upon, structured pathology data set for melanoma will lead not only to improved patient management but is a prerequisite for research and for international benchmarking in health care.

