5.11.20
Publication Date: 2020-05-11
History
4 year old staffordshire terrier. Male. History of ocular,cutaneous lesions.
3 images
Findings
Orthogonal radiographs of the thorax and abdomen.
There is large (approximately 10cm x 12cm), ill-defined, ovoid, soft tissue opaque mass within the right caudal lung lobe.
There are numerous variably sized, but overall large, well-defined, soft tissue opaque nodules and masses throughout all remaining lung lobes (measuring up to 5 cm in diameter).
The cardiovascular structures are partially obscured due to the pulmonary pathology but are overall normal.
Diagnosis
Right caudal lung lobe large pulmonary mass with numerous additional variably sized nodules and small masses throughout the remaining lungs. This may represent a primary pulmonary neoplasia with intra-pulmonary metastasis (such as carcinoma) or multiple cannonball metastases (such as from melanoma, or other unknown primary carcinoma).
Fungal pneumonia with numerous granulomas is considered unlikely given the history but cannot entirely be ruled out.
Discussion
FNAs of the pulmonary mass, subcutaneous nodule and of a splenic nodule found on ultrasound came back as: malignant neoplasia with a poorly differentiated mast cells being the primary differential. The patient was put on palliative care as the extent of the disease made the prognosis very poor.
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