Feline Archives - ProtonVet

Pulmonary carcinoma with metastasis in a cat

9-years-old, domestic long-haired cat. Presented for weight loss, decreased appetite, lethargy, with elevated respiration rate and coughing episodes. A thoracic CT-scan was performed.

Description

There is a mass like lesion, with irregular and ill-defined margins affecting the entire right accessory lung lobe and infiltrating the left caudal lung lobe (red arrows). This lesion has soft tissue attenuation, showing a slightly heterogeneous contrast enhancement. The lesion is visible as a consolidated area with presence of multiple air bronchograms embedded within the lesion, causing a mild mass effect over the lobar bronchi of the left caudal lung lobe, which is laterally displaced.

From left to right: pre and post-contrast images

In addition, the right middle and caudal lung lobes (blue and pink arrows respectively) are completely consolidated, with a slightly increased volume and presence of air bronchograms, with similar appearance compared to the previously described lesion. Cranial to this region, there is a subpleural lesion connecting with the right caudal lung lobe, which seems to infiltrate the caudal aspect of the right cranial lung lobe (yellow arrows). These lung lobes have a soft tissue attenuation with a mild and slightly heterogeneous contrast enhancement.

In addition, at the aerated portions of the left caudal lung lobe, there are multiple, variable in size, ill-defined nodular lesions (pink arrows).

There is a moderate/marked enlargement of the tracheobronchial lymph nodes (green arrows), which show a reduced homogeneous contrast enhancement.

Diagnosis

Complete consolidation of the right middle, caudal and accessory lung lobes associated to a mass-like lesion, partially infiltrating as well the left caudal lung lobe and possibly the right cranial lung lobe. These findings are most likely consistent with a neoplastic process (primary pulmonary tumor – carcinoma, among others).
At least 3 small nodules in the left caudal lung lobe, adjacent to the previously described lesion, consistent with metastatic disease, most likely.
Moderate tracheobronchial lymphadenopathy, most likely metastatic.

Presumptive ischemic stroke in a cat

A 10-year-old, female, domestic short hair cat was presented with incoordination. An MRI scan of the head was performed.

Feline Ischemic stroke MRI Neurology

Sacrocaudal intervertebral disc protrusion in a cat

6 years-old, male domestic short hair. Previous history of teeth cleaning one week ago. Now he shows flaccid tail and pain in the lower back and tail area. A spinal CT scan was performed.

CT scan Feline Intervertebral disc protrusion

Mass in right tympanic bulla with nasopharyngeal, periaural soft tissues and intracranial invasion in a cat

1-year-old, male, Blue Russian cat was presented with nasal and otic discharge. The patient has non-regenerative anaemia and is positive for feline leukaemia virus (FeLV). A CT of the head was performed.

CT scan Feline FeLV Lymphoma Neoplasia Tympanic bulla

Lipid pneumonia in a cat

6-years-old, male, DSH cat with chronic coughing, FIV positive. Alveolar lung pattern in ventral lung areas was seen on X-rays. A thoracic CT-scan was performed.

CT scan Feline Pneumonia

Otitis media and interna in a cat

7-year-old female Domestic Short-hair cat, with peripheral vestibular signs, left otitis media was suspected. An MRI of the head was performed.

Domestic Short-hair cat MRI Otitis interna Otitis media peripheral vestibular signs

Intracranial extension of an expansile ear lesion in a cat

9-year-old, female, Maine Coon was presented with recurrence of a peripheral vestibular syndrome. A ventral osteotomy of the left tympanic bulla was previously performed. An MRI of the head was performed.

CT scan Feline Maine Coon peripheral vestibular syndrome

Feline lung patchy alveolar pattern with fibrosing pleuritis, bilateral pleural effusion and pneumothorax

7-years-old, male, DSH cat with pleural effusion of unknown origin. Lung alveolar pattern was seen on the X-rays. A thoracic CT-scan was performed.

bilateral pleural effusion CT scan Feline fibrosing pleuritis pneumothorax

Presumptive lung lobe torsion in a cat

2-year-old male DSH with pleural effusion (chylothorax). Echocardiography did not reveal any abnormalities. An CT of the thorax was performed.

Chylothorax CT scan Feline Lung Lobe Torsion Pleural effusion

Presumptive lung, pleural, renal and costal musculature metastasis of tubular adenocarcinoma in a cat

9 -years-old female domestic short hair. A tubular adenocarcinoma was diagnosed by biopsy in the dorsal aspect of the thoracic region.
A thoracic CT was performed.

CT scan Feline Neoplasia Tubular Adenocarcinoma