Computed Tomographic Findings in Dogs with Presumed Metaphyseal Osteopathy

Area of Science:

• Veterinary Radiology
• Canine Pathology
• Medical Imaging

Background:

• Metaphyseal osteopathy (MO) is a rare systemic disease in young, large-breed dogs.
• Diagnosis typically relies on clinical signs and imaging, with limited Computed Tomography (CT) data available.
• Radiographic findings are established, but CT characteristics require further elucidation.

Purpose of the Study:

• To describe the Computed Tomography (CT) findings in dogs with Metaphyseal Osteopathy (MO).
• To evaluate the utility of CT in diagnosing MO, especially when clinical signs are non-specific.

Main Methods:

• Retrospective review of clinical records and imaging (CT and radiographs) from a veterinary teaching hospital.
• Inclusion criteria: dogs with a presumed MO diagnosis and available CT imaging.
• Analysis of CT lesion characteristics, laterality, symmetry, and affected bones.

Main Results:

• Four dogs met the inclusion criteria, all presenting with pyrexia and other clinical signs.
• CT revealed bilateral, symmetric metaphyseal bands of lysis parallel to the physis with sclerosis.
• Multiple long bones were affected; mandibular involvement was suspected in two cases.

Conclusions:

• CT findings in Metaphyseal Osteopathy (MO) include bilateral, symmetric metaphyseal lysis and sclerosis.
• Understanding these CT features is valuable for prompt diagnosis in young dogs with pyrexia and non-specific signs.
• While radiographs are primary, CT can supplement diagnosis, particularly in complex cases.