[Acrospiroma (clinico-morphological characteristics and histogenesis)]

Area of Science:

• Dermatopathology
• Surgical Oncology

Context:

• Acrospiromas are rare skin tumors.
• Understanding their malignant potential and histogenesis is crucial for effective treatment.

Purpose:

• To present the clinico-morphological characteristics of acrospiromas.
• To identify diagnostic features of malignant acrospiromas.
• To elucidate the histogenetic origin of acrospiromas.

Summary:

• Analysis of 105 surgically removed acrospiromas over 10 years.
• Six cases identified as malignant acrospiromas, showing a propensity for recurrence.
• Detailed discussion of diagnostic features: tumor development within cysts, presence of squamous and clear cells (glycogen-rich), and sweat gland duct-like structures.
• Electron microscopy supports a histogenetic link to sweat gland duct elements.

Impact:

• Improved diagnostic accuracy for malignant acrospiromas.
• Enhanced understanding of acrospiroma histogenesis, linking them to clear-cell hydradenoma.
• Informs clinical management strategies for recurrent tumors.