Mitotic Activity in Juvenile Benign Nevi

Area of Science:

• Dermatopathology
• Pediatric Pathology
• Oncology

Background:

• Melanocytic nevi require histological evaluation to rule out malignancy.
• Mitotic figures are key indicators in assessing lesion malignancy.
• Limited data exists on mitotic activity in benign juvenile nevi.

Purpose of the Study:

• To investigate the presence and rate of mitotic figures in benign melanocytic nevi in children.
• To establish age-related patterns of mitotic activity in juvenile nevi.

Main Methods:

• Histological examination of 114 benign melanocytic nevi from children aged 0-15 years.
• Counting mitoses in two hematoxylin and eosin-stained tissue sections per case.
• Calculating the proportion of cases with mitotic activity and the average mitotic rate per age group.

Main Results:

• At least one mitosis was observed in 40.4% of the evaluated juvenile nevi.
• A decreasing trend in mitotic rate was noted with increasing age in children.
• Mitotic activity was more prevalent in younger children compared to older children.

Conclusions:

• Mitotic figures are frequently present in benign melanocytic nevi of children.
• The significance of mitotic figures in juvenile nevi requires careful interpretation to avoid overdiagnosis of malignancy.
• Age-specific data on mitotic activity is essential for accurate histopathological assessment in pediatric dermatology.