Malignant sweat gland tumors: an update

Area of Science:

• Dermatopathology
• Surgical Pathology
• Oncology

Background:

• Sweat gland carcinomas are rare tumors with diverse histological features, posing diagnostic challenges.
• Accurate classification is essential due to potential for significant morbidity and mortality.
• Traditional classification separates tumors into low-grade and high-grade malignant behaviors.

Purpose of the Study:

• To enhance awareness and provide an overview of malignant sweat gland tumors.
• To highlight novel findings and diagnostically challenging entities.
• To discuss morphology, immunohistochemistry, behavior, and differential diagnosis.

Main Methods:

• Review of recent literature on sweat gland carcinomas.
• Emphasis on challenging and underrecognized entities.
• Discussion of diagnostic criteria and immunohistochemical markers.

Main Results:

• Malignant sweat gland tumors exhibit a wide spectrum of histological presentations.
• Several entities present diagnostic difficulties and may be underrecognized.
• Immunohistochemistry plays a vital role in accurate diagnosis and classification.

Conclusions:

• Increased awareness and understanding of sweat gland carcinomas are critical for timely diagnosis.
• Accurate histological classification and immunohistochemical analysis guide patient management.
• Prompt treatment is essential to mitigate morbidity and mortality associated with these rare skin cancers.