Bilateral, single-session, laparoscopic adrenalectomy was associated with favorable outcomes in a cohort of dogs

Makayla Farrell Department of Clinical Studies, Ontario Veterinary College, University of Guelph, Guelph, ON, Canada

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Ameet Singh Department of Clinical Studies, Ontario Veterinary College, University of Guelph, Guelph, ON, Canada

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Philipp D. Mayhew Department of Surgical and Radiological Sciences, School of Veterinary Medicine, University of California-Davis, Davis, CA

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Felipe Lillo-Araya Escuela de Medicina Veterinaria, Facultad Ciencias de la Vida, Universidad Andres Bello, Santiago, Chile

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Federico Massari Clinica Veterinaria Nervianese, Nerviano, Italy

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Danielle Richardson Department of Clinical Studies, Ontario Veterinary College, University of Guelph, Guelph, ON, Canada

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Allison J. Collier Department of Clinical Studies, Ontario Veterinary College, University of Guelph, Guelph, ON, Canada

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Abstract

OBJECTIVE

To report perioperative characteristics and outcome following bilateral, single-session, laparoscopic adrenalectomy (BSSLA) in dogs.

ANIMALS

Client-owned dogs (n = 6).

CLINICAL PRESENTATION AND PROCEDURES

Medical records were reviewed and perioperative data collected, including preoperative diagnostic imaging, operative details, complications, and need for conversion to open laparotomy. Bilateral, single-session, laparoscopic adrenalectomy was performed on the right or left side with a standard 3- or 4-portal transperitoneal technique. The dog was repositioned to contralateral recumbency, and laparoscopic adrenalectomy was repeated. Follow-up information was collected by telephone interviews with the owners and/or referring veterinarian.

RESULTS

Median age and weight of dogs were 126 months and 14.75 kg, respectively. Contrast-enhanced CT (CECT) was performed in all dogs. Median maximal tumor diameter was 2.6 and 2.3 cm for the right and left-sided tumors, respectively. Median surgical and anesthesia times were 158 and 240 minutes, respectively. Conversion to open laparotomy was performed in 1 dog following renal vein laceration during initial adrenalectomy. Left adrenalectomy and ureteronephrectomy were performed, and the right adrenal tumor was left in situ. Cardiac arrest occurred in 1 dog following initial adrenalectomy (left); however, the dog was resuscitated successfully, and contralateral laparoscopic adrenalectomy was performed without complication. All dogs survived to hospital discharge. Follow-up ranged from 60 to 730 days (median, 264 days) for dogs that successfully underwent BSSLA.

CLINICAL RELEVANCE

BSSLA was associated with favorable outcomes in this cohort of dogs. Laparoscopy may be considered in dogs with bilateral, modestly sized, noninvasive adrenal tumors.

Abstract

OBJECTIVE

To report perioperative characteristics and outcome following bilateral, single-session, laparoscopic adrenalectomy (BSSLA) in dogs.

ANIMALS

Client-owned dogs (n = 6).

CLINICAL PRESENTATION AND PROCEDURES

Medical records were reviewed and perioperative data collected, including preoperative diagnostic imaging, operative details, complications, and need for conversion to open laparotomy. Bilateral, single-session, laparoscopic adrenalectomy was performed on the right or left side with a standard 3- or 4-portal transperitoneal technique. The dog was repositioned to contralateral recumbency, and laparoscopic adrenalectomy was repeated. Follow-up information was collected by telephone interviews with the owners and/or referring veterinarian.

RESULTS

Median age and weight of dogs were 126 months and 14.75 kg, respectively. Contrast-enhanced CT (CECT) was performed in all dogs. Median maximal tumor diameter was 2.6 and 2.3 cm for the right and left-sided tumors, respectively. Median surgical and anesthesia times were 158 and 240 minutes, respectively. Conversion to open laparotomy was performed in 1 dog following renal vein laceration during initial adrenalectomy. Left adrenalectomy and ureteronephrectomy were performed, and the right adrenal tumor was left in situ. Cardiac arrest occurred in 1 dog following initial adrenalectomy (left); however, the dog was resuscitated successfully, and contralateral laparoscopic adrenalectomy was performed without complication. All dogs survived to hospital discharge. Follow-up ranged from 60 to 730 days (median, 264 days) for dogs that successfully underwent BSSLA.

CLINICAL RELEVANCE

BSSLA was associated with favorable outcomes in this cohort of dogs. Laparoscopy may be considered in dogs with bilateral, modestly sized, noninvasive adrenal tumors.

Contributor Notes

Corresponding author: Dr. Singh (amsingh@uoguelph.ca)
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