Gallbladder Neuroendocrine Neoplasms in Dogs and Humans.

Area of Science:

• Veterinary Oncology
• Comparative Pathology
• Oncology

Background:

• Gallbladder neuroendocrine neoplasms (GB NENs) represent a rare group of tumors affecting both humans and canines.
• Understanding the similarities and differences between human and canine GB NENs is crucial for advancing research and treatment.
• The scarcity of human cases necessitates the exploration of relevant animal models.

Purpose of the Study:

• To conduct a comprehensive review of the existing literature on canine gallbladder neuroendocrine neoplasms.
• To perform an interspecies comparison of GB NENs in dogs and humans, focusing on demographics, clinical features, pathophysiology, and treatment outcomes.
• To evaluate the potential of dogs as a spontaneous model for studying human GB NENs.

Main Methods:

• Systematic literature review of canine GB NEN cases.
• Comparative analysis of epidemiological data, clinical presentations, and diagnostic findings.
• Review of pathobiological characteristics and therapeutic strategies reported in both species.
• Assessment of treatment response and survival data.

Main Results:

• Canine GB NENs share similarities with human counterparts in terms of rarity and histological classification.
• Demographic and clinical presentations show some overlap, but distinct differences exist.
• Pathobiological features and responses to therapies like surgery and chemotherapy warrant further investigation for comparative relevance.
• Limited data exists on specific therapeutic responses in canine GB NENs.

Conclusions:

• Dogs represent a potentially valuable spontaneous model for human gallbladder neuroendocrine neoplasms due to shared biological characteristics.
• Further research is needed to fully elucidate the comparative pathobiology and optimize therapeutic strategies for both species.
• Interspecies comparison can provide insights into disease mechanisms and inform the development of novel treatments for rare GB NENs.