Hepatocellular carcinoma in a young dog

Area of Science:

• Veterinary Medicine
• Canine Oncology
• Hepatology

Background:

• Elevated serum liver enzymes in dogs can indicate underlying hepatic disease.
• Hepatocellular carcinoma (HCC) is a primary liver tumor in dogs, typically diagnosed in older animals.
• Early detection and diagnosis are crucial for effective treatment of canine liver disease.

Purpose of the Study:

• To report a rare case of hepatocellular carcinoma (HCC) in a very young dog.
• To highlight the importance of diagnostic imaging and histopathology in identifying liver masses.
• To contribute to the understanding of the age distribution of HCC in canines.

Main Methods:

• Diagnostic evaluation of a 25-month-old Chihuahua with incidental high serum liver enzymes.
• Abdominal ultrasonography and computed tomography (CT) to characterize the liver mass.
• Surgical resection of the hepatic mass.
• Histopathological examination of the resected tissue for definitive diagnosis.

Main Results:

• Imaging revealed a mass in the left hepatic medial lobe.
• Histopathology confirmed the diagnosis of hepatocellular carcinoma (HCC).
• The dog was asymptomatic at the time of diagnosis.

Conclusions:

• Hepatocellular carcinoma (HCC) can occur in very young dogs, challenging typical age-related assumptions.
• Diagnostic imaging and histopathology are essential for diagnosing liver masses in dogs, regardless of age.
• This case represents the youngest documented instance of HCC in a dog, expanding the known spectrum of this disease.