Pulmonary Adenocarcinoma

Allison Zwingenberger

University of California Davis

Publication Date: 2010-09-01

History

13 year old male castrated DSH feline that presented for a 3 week history of a productive cough.

3 images

There is a well defined soft tissue mass surrounding the tracheal carina and visible in the caudal portion of the left cranial lung lobe on the DV projection. There is volume loss of the caudal portion of the left cranial lung lobe associated with minimal mediastinal shift. On the right lateral projection, a lobar sign is present between the caudal portion of the left cranial and left caudal lung lobes. In the remainder of the pulmonary parenchyma, there is a moderate bronchial pattern. There is an ill defined soft tissue nodule in the 9th intercostal space on the right side. The cardiovascular structures are within normal limits.

Soft tissue mass in the perihilar region associated with atelectasis of the caudal portion of the left cranial lung lobe and ill defined soft tissue nodule in the right caudal lung lobe. These findings are suggestive of primary pulmonary neoplasia with pulmonary metastasis or hilar lymphadenopathy, with secondary compression of the bronchus and collapse of the left cranial lung lobe.

A fine needle aspirate of the larger mass was performed with ultrasound guidance.