Frequency of malignant solid tumors in children.

Area of Science:

• Pediatric Oncology
• Surgical Pathology
• Cancer Epidemiology

Background:

• Malignant solid tumors represent a significant health concern in children.
• Understanding the frequency and types of these tumors is crucial for diagnosis and treatment.
• Data on pediatric cancer epidemiology varies geographically.

Purpose of the Study:

• To determine the incidence of malignant solid tumors in pediatric patients under 15 years of age.
• To identify the most common types of pediatric malignant solid tumors.
• To compare findings with existing literature from Pakistan.

Main Methods:

• Retrospective analysis of pediatric malignant solid tumor cases diagnosed over two years.
• Histopathological evaluation using Hematoxylin and Eosin (H&E) staining.
• Immunohistochemical analysis with a panel of antibodies for undifferentiated tumors.

Main Results:

• Lymphoma was the most frequent pediatric malignant solid tumor (26.1%).
• Central nervous system tumors were the second most common (16.6%).
• Other significant tumors included osteosarcoma (7.5%), rhabdomyosarcoma (6.7%), and neuroblastoma (5.1%).

Conclusions:

• Lymphoma is the predominant malignant solid tumor in children.
• The observed frequency of childhood central nervous system tumors is high compared to other Pakistani studies.
• Further research is needed to understand regional variations in pediatric cancer incidence.