A morphological study of human pineal gland in post-mortem cases

Area of Science:

• Anatomy
• Histology
• Human Morphology

Background:

• The human pineal gland's morphology and age-related changes are crucial for understanding its function.
• Previous studies have indicated variations in pineal gland structure, but comprehensive analysis across a wide age range is limited.

Purpose of the Study:

• To investigate the morphological characteristics of the human pineal gland.
• To analyze age and gender-related variations in pineal gland histology and macroscopic parameters.
• To document microscopic features such as calcification, pigment deposition, and inflammatory changes.

Main Methods:

• Post-mortem collection of 30 human pineal glands (16 male, 11 female) aged 1-80 years.
• Measurement of morphological parameters including weight and transverse diameter.
• Histological processing with Hematoxylin & Eosin (H&E) and Masson Trichrome staining.
• Microscopic examination for capsular delineation, septation, lobulation, calcification, pigment, inflammation, fibrosis, gliosis, and cystic changes.

Main Results:

• Detailed measurements of pineal gland weight and diameter were recorded.
• Histological analysis revealed variations in connective tissue patterns, capsular delineation, septation, and lobulation across different age groups.
• Microscopic examination identified age-related prevalence of calcification, intracellular brown pigment, inflammatory cells, fibrosis, gliosis, and cystic changes.

Conclusions:

• The human pineal gland exhibits significant morphological and histological changes with age.
• These age-related alterations in pineal gland structure may impact its endocrine function.
• Understanding these variations is essential for both anatomical and clinical contexts.