Pulmonary lipoma in a dog.

Area of Science:

• Veterinary Medicine
• Canine Pathology
• Surgical Oncology

Background:

• Pulmonary masses in dogs can have various etiologies, requiring accurate diagnosis and treatment.
• Chronic cough and intrathoracic masses are significant clinical signs in canine patients.
• Benign lung tumors, such as lipomas, are uncommon but should be considered in differential diagnoses.

Observation:

• An eight-year-old German Shorthaired Pointer presented with chronic cough and a detected intrathoracic mass.
• Computed tomography revealed a low-attenuation mass in the right caudal lung lobe, invading principal bronchi.
• Surgical intervention involved right caudal and accessory lung lobectomy.

Findings:

• Histopathological examination confirmed the mass as a pulmonary lipoma, a rare benign tumor.
• Post-operative recovery was successful, with complete resolution of the chronic cough.
• Twelve-month follow-up imaging showed no signs of tumor recurrence or new lesions.

Implications:

• This case represents the first documented instance of a pulmonary lipoma in a canine patient.
• Highlights the importance of considering rare benign tumors in the differential diagnosis of canine lung masses.
• Demonstrates the efficacy of surgical resection for pulmonary lipomas, leading to favorable long-term outcomes.