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Update on Cutaneous Soft Tissue Tumors.

Josephine K Dermawan¹, Jennifer S Ko², Steven D Billings²

¹Soft Tissue and Bone Pathology Section, Department of Pathology, Cleveland Clinic, 9500 Euclid Avenue, L25, Cleveland, OH 44195, USA.

Surgical Pathology Clinics

|May 23, 2021

Summary

This summary is machine-generated.

This article reviews emerging skin soft tissue tumors, detailing their unique features and diagnostic methods. Accurate diagnosis relies on understanding morphology, immunophenotypes, and molecular testing for these rare neoplasms.

Keywords:

CIC-rearranged sarcoma EWSR1-SMAD3-rearranged fibroblastic tumor Epithelioid fibrous histiocytoma NTRK-rearranged spindle cell neoplasm Superficial CD34-positive fibroblastic tumor

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Area of Science:

Dermatopathology
Oncology
Soft Tissue Neoplasms

Background:

Cutaneous soft tissue neoplasms present diverse clinical and histologic features.
Accurate diagnosis of rare neoplasms is challenging.
Emerging entities require updated diagnostic criteria.

Purpose of the Study:

To review recently described and emerging cutaneous soft tissue neoplasms.
To highlight distinguishing morphologic and immunophenotypic features.
To discuss novel diagnostic tests for accurate classification.

Main Methods:

Review of recent literature on cutaneous soft tissue neoplasms.
Analysis of morphologic and immunophenotypic characteristics.
Discussion of molecular and immunohistochemical diagnostic techniques.

Main Results:

Detailed description of entities including EWSR1-SMAD3-rearranged fibroblastic tumor, superficial CD34-positive fibroblastic tumor, epithelioid fibrous histiocytoma, CIC-rearranged sarcomas, and NTRK-rearranged spindle cell tumors.
Emphasis on differential diagnosis based on key features.
Importance of advanced molecular and immunophenotypic testing highlighted.

Conclusions:

Accurate diagnosis of emerging cutaneous neoplasms requires a comprehensive approach.
Understanding specific molecular alterations is crucial for targeted therapy.
Continued research is needed to further characterize these rare tumors.