Multi-institutional study of long-term outcomes of a ventral versus lateral approach for mandibular and sublingual sialoadenectomy in dogs with a unilateral sialocele: 46 cases (1999–2019)

Abstract

OBJECTIVE To compare the long-term outcomes of a ventral versus lateral surgical approach for mandibular and sublingual sialoadenectomy in dogs with a unilateral sialocele. ANIMALS 46 client-owned dogs. PROCEDURES Medical records of dogs that underwent unilateral sialoadenectomy between 1999 and 2019 were retrospectively reviewed, and information was collected regarding signalment, clinical signs, historical treatment, swelling location, diagnostic imaging findings, sialoadenectomy approach, adjunctive treatments, intraoperative complications, hospitalization time, postoperative complications, recurrence, and contralateral sialocele development. RESULTS There were no significant differences in incidences of intraoperative complications, recurrence, or postoperative complications between dogs in which a lateral versus ventral approach was used. Clinically important intraoperative complications included iatrogenic tears in the oral mucosa, ligature slippage from the duct end, hemorrhage, and possible lingual nerve transection. Surgical experience was associated with the likelihood that intraoperative complications would develop. Suspected recurrence was reported in 2 of 26 (8%) dogs that underwent a lateral approach and 2 of 12 (17%) dogs that underwent a ventral approach. Hospitalization time was significantly shorter with the lateral approach than with the ventral approach. Postoperative complications had a short-term onset and occurred in 4 of 25 (16%) dogs that underwent a lateral approach and 3 of 12 (25%) dogs that underwent a ventral approach. Age and presence of a pharyngeal sialocele were associated with development of postoperative complications. CLINICAL RELEVANCE Long-term outcomes for ventral and lateral approaches to sialoadenectomy were favorable and appeared to be comparable. Further prospective study into potential associations of sialoadenectomy approach, age, and pharyngeal sialoceles on outcome is needed.

Case report: Sepsis secondary to infected protracted parotid sialocele after maxillofacial oncologic surgery in a dog

“…Accordingly, most recurrent sialoceles, which are presumed to be due to remaining glandular tissue and direct saliva extravasation, recur within 3–6 months of initial surgery ( 26 , 27 ). Conversely, a recent article in dogs reported recurrent sialoceles developed at a median of 3 years following sialoadenectomy ( 28 ).…”

“…Accordingly, most recurrent sialoceles, which are presumed to be due to remaining glandular tissue and direct saliva extravasation, recur within 3-6 months of initial surgery (26,27). Conversely, a recent article in dogs reported recurrent sialoceles developed at a median of 3 years following sialoadenectomy (28). Alternatively, protracted iatrogenic sialoceles may occur secondary to post-surgical fibrosis and remodeling causing parotid duct stenosis, duct dilation, and eventual rupture.…”

Técnicas De Sialoadenectomia Para Tratamento De Sialocele Cervical – Revisão Bibliográfica

“…Ela pode comprometer qualquer ducto ou glândula, porém as maiores casuísticas são relacionadas a localidade glandular sublingual e mandibular, seguido de esporádicos casos a respeito da glândula zigomática, ambas com possível uni ou bilateralidade. Geralmente se apresentam clinicamente por uma massa indolor, edemaciada e com hipertermia na região cervical, conjuntamente a sinais relacionados a compressão local do sistema respiratório e digestório, como tosses e roncos, ptialismo, sangramento oral, disfagia, dispnéia, cianose e posteriormente obstrução da faringe pelo excesso de volume regional (SWEETON et. al., 2022).…”

“…al., 2021). Atualmente, em outras pesquisas analíticas, os índices de ambos os métodos se mostraram sem significativa comparação negativa (SWEETON et. al., 2022).…”