Table 3.
Thoracic radiographic features of 21 cases of lower respiratory tract infection
| Case | Infection | Radiographic features | ||||||
|---|---|---|---|---|---|---|---|---|
| Bronchial | Alveolar | Interstitial | Nodular | Cardiovascular | Pleural | Comments | ||
| 1 | mycoplasma | Severe | Improved after treatment. | |||||
| 2 | mycoplasma | Moderate | ||||||
| 3 | mycoplasma | Moderate | Mild, focal, R cranial lobe | 15 mm nodule in L cranial lobe | Changes persisted for 10 months. No radiographs after clinical cure. | |||
| 4 | mycoplasma | Moderate | Severe, focal, R cranial lobe | Moderate | Bronchointerstitial pattern resolved with treatment. R cranial lobe consolidation persisted. | |||
| 5 | mycoplasma | Moderate (diffuse) to severe (lobar) | Alveolar pattern resolved with treatment. Residual mild bronchial pattern. | |||||
| 6 | myoplasma | Moderate | Mild to severe multifocal. Consolidation cranial part of L cranial lobe | Improved with treatment to mild alveolar pattern but mild broncho-interstitial pattern developed 19 months later. | ||||
| 7 | mycoplasma | Moderate | Severe multifocal | Mild | 5 mm nodule in R cranial lobe | |||
| 8 | mycoplasma | Severe | Lobar sign R middle lobe | Severe | ||||
| 9 | mycoplasma | Severe | Lobar sign R middle lobe | Severe | Air trapping, overinflation evident. | |||
| 10 | mycoplasma | Severe diffuse | Alveolar pattern improved with treatment but severe bronchial pattern then evident. | |||||
| 11 | mycoplasma | Mild | Mild, focal, dorsocaudal margins of caudal lobes | Caudal lobar pulmonary artery dilation and tortuosity | Alveolar pattern resolved with treatment. Vascular changes increased in severity. | |||
| 12 | mycoplasma, Bordetella bronchiseptica | Mild | Mild | |||||
| 13 | mycoplasma, Pasteurella multocida | Severe | Cardiomegaly | Bronchial pattern improved after treatment. | ||||
| 14 | Pasteurella sp., unidentified Gram negative bacterium | Moderate | ||||||
| 15 | Pasteurella sp., mixed anaerobes | Severe | Mild diffuse | Mild broncho-interstitial pattern five months prior to this. | ||||
| 16 | Salmonella typhimurium, Aelurostrongylus abstrusus | Severe diffuse | Severe pneumo-thorax | Improved with treatment to severe interstitial and moderate bronchial pattern one month later. | ||||
| 17 | Salmonella typhimurium, Pseudomonas sp., Aelurostrongylus abstrusus | Severe | Patchy R middle lung lobe atelectasis | |||||
| 18 * | Cryptococcus neoformans | Moderate | Two focal nodules, 3–5 mm diameter | Nodules resolved with treatment. | ||||
| 19 * | Eucoleus aerophilus | Severe | ||||||
| 20 | Mycobacterium thermoresistibile | Severe diffuse | ||||||
| 21 | Toxoplasma gondii | Moderate | Mild | Six to ten nodules, 2–5 mm diameter | ||||
Abbreviations: R=right; L=left.
*
Cases 18 and 19 were from the same cat on two different occasions.