Results of the Study of 32 Dogs with Carcinoma: Characteristics of the Study Group and the Computed Tomographic Pattern
In this research article, we describe CT findings in lungs in a group of 32 dogs with lung carcinoma. We present analysis of CT scans with contrast medium and without it. Materials and methods. We used two types of CT scaners: one-slice CT Picker PQ 6000 and sixteen-slice CT Siemens Somatom Emotion 16. Morphological confirmation of the diagnosis: biopsy - 16 (50 %), thorax surgery - 9 (28.1 %), autopsy - 7 (21.9 %). Results. Median age of dogs 10,8±0,38y, 26 (86.7 %) older than 10y. Small breeds - 10 (31.3 %), middle and large breeds - 22 (68.7 %). Adenocarcinoma - 17 (53.1 %), undifferentiated carcinoma - 15 (46.9 %). Secondary pneumonia - 14 (43.8 %). Tumors in caudal lobes - 22 (68.8 %). The structure of lesions: cystic - 3 (9.4 %), cystic-solitary - 6 (18.8 %), solitary-cystic - 7 (21.9 %), solitary - 16 (50 %). Cavity with gas - 3 (9.4 %), tumor mineralization - 5 (15.6 %), bronchial structure - 15 (46.9 %) of all tumors$ 1 nodule (3.1 %) had enhanced accumulation of the contrast medium, bullaes - 4 (12.5 %), lung metastasis - 13 (40.6 %), metastasis in mediastinal lymph nodes - 3 (9.4 %), spleen metastasis - 2 (6.3 %), liver metastasis - 4 (12.5 %), metastasis in vertebral column - 1 (3.1 %), metastasis in pleural space - 2 (6.3 %), adrenal gland metastasis - 2 (6.3 %). Total 16 dogs had metastases in different organs. Free fluid in pleural space - 1 (3.1 %), pneumothorax - 1 (3.1 %), pneumonia - 5 (15.6 %). Conclusions. Large and middle breed dogs were predisposed, but there were no predispositions for any specific breeds. There was no sex predisposition. The dogs older than ten years had predisposition. Caudal lung lobes had predisposition for tumors. Metastases were founded in 50 % of cases. Secondary inflammation, necrosis and pneumonia were diagnosed in 43.8 %. Basically CT picture of lung carcinomas were present by solitary or solitary-cystic nodules (71.9 %).