Table 2.
Ultrasonographical, treatment and histopathological features of 13 cases of feline hyperaldosteronism*
| Case no. | Adrenal ultrasonography | AC pathology | Surgery† | Outcome | Survival† |
| 1 | R 3×1 cm hypoechoic; L not seen | R C | N | Good response to K, spiron and amlo but no return of vision. Euthanasia due to severe chronic renal failure. | Euthanasia d304 |
| 2 | nd | L A | N | K, spiron and amlo but BP remained high with no return of vision. Euthanasia due to severe chronic renal failure. | Euthanasia d984 |
| 3 | R enlarged and hypoechoic, not measured; L not seen | R A | Y on d70 | Good response to K, spiron and amlo before surgery. Healthy at time of writing. | Alive at d1803 |
| 4 | R 2.1×1.7 cm hypoechoic; L not seen | R A | Y on d40 | Good response to K, spiron and amlo before surgery. Healthy at time of writing. | Alive at d1278 |
| 5 | R enlarged and hypoechoic, not measured; L not seen | R C | Y on d20 | Good response to K and spiron before surgery. Euthanasia due to anorexia and cranial abdominal mass but PME not performed. | Euthanasia d1065 |
| 6 | R adrenal not seen; L enlarged but not measured | L A | Y on d75 | Good response to K, spiron and amlo before surgery. On treatment for chronic renal failure. | Alive at d500 |
| 7 | nd | Bilat A | N | Good initial response to K, spiron and amlo but lack of owner compliance for treatment after 7 days. Euthanasia due to severe weakness. | Euthanasia d50 |
| 8 | R 2×2 cm hypoechoic; L N | R C | Y on d14 | Good response to K and spiron before surgery. Healthy at time of writing | Alive at d431 |
| 9 | R 3.5×2.5 cm adhered to liver and CVC; L N | Bilat A | Y on d13 | Good response to K and spiron before surgery. Euthanasia due to severe H+ at surgery. | Euthanasia d13 |
| 10 | R enlarged and compressing dorsal suface CVC, not measured; L N | R A | Y on d149 | Good response to K and spiron before surgery. Euthanasia due to severe H+ immediately post surgery. | Euthanasia d149 |
| 11 | R enlarged but not measured; LN | R C | Y on d183 | Good response to K and spiron before surgery. Euthanasia due to severe H+ immediately post surgery. | Euthanasia d183 |
| 12 | R adrenal N; L 2×2 cm hypoechoic | L C | Y on d30 | Good response to K, spiron and amlo before surgery. Healthy at time of writing | Alive at d240 |
| 13 | R not identified; L 1×1 cm hypoechoic | L C | Y on d30 | Good response to K, spiron, amlo and carbimazole before surgery, although BP remained high. Did well after surgery but generalised sepsis developed 14 days after surgery leading to euthanasia. | Euthanasia d44 |
*
L=left; R=right; cm=centimeters; CVC=caudal vena cava; AC=adrenocortical; C=carcinoma; A=adenoma; Bilat=bilateral; N=no; Y=yes; d=days; K=potassium supplementation; spiron=spironolactone; amlo=amlodipine; H+=haemorrhage; nd=not done.
†
Value given refers to number of days after initial presentation.