Single-Cell Squamous Carcinoma: An Underreported High-Risk Variant

Area of Science:

• Oncology
• Dermatology
• Pathology

Background:

• Increasing interest in diagnostic and treatment guidelines for high-risk squamous cell carcinoma (SCC).
• Single-cell SCC is a recognized high-risk subtype but remains poorly understood and underreported.
• Limited data exists on the specific characteristics and clinical behavior of single-cell SCC.

Purpose of the Study:

• To review and synthesize the current literature on single-cell SCC.
• To highlight the challenges in diagnosing and managing this rare SCC variant.
• To identify areas for future research and clinical practice improvement.

Main Methods:

• Comprehensive literature review of single-cell squamous cell carcinoma.
• Analysis of reported cases and associated clinical data.
• Evaluation of diagnostic modalities and prognostic factors.

Main Results:

• Fewer than 100 cases of single-cell SCC reported in the literature.
• Studies suggest an increased risk of metastasis compared to non-single-cell SCC.
• Confounding factors like tumor size and depth, and difficulty in detection, complicate risk assessment; independent risk status is unclear.
• Immunostaining aids in improved tumor cell detection.

Conclusions:

• Single-cell SCC is an underreported variant with apparent aggressive behavior.
• More research is essential to elucidate its tumor biology, behavior, and to enhance patient outcomes.
• Complete tumor excision, potentially aided by immunostaining, and multidisciplinary care are recommended based on current knowledge.