Selective deep lobe parotidectomy is a safe option for benign deep lobe parotid tumoursSelective surgery shows low complication rates for deep lobe parotid tumors

The British journal of oral & maxillofacial surgery Published September 8, 2026 Study authors: Burridge I, Marwat M, Manoharan V, Abdi M, Ghouri Z, Le Blevec L, Zaheen J, Zafar A, Vaishnavi Lal J… PubMed ↗ DOI ↗ Editorial oversight: Dr. Lars van Dijk, PhD · Surgical, Procedural & Diagnostic

AI-generated summary of the cited source, checked by automated accuracy review. How we work

Key Takeaway

Note that selective deep lobe parotidectomy is a safe option for benign deep lobe tumours with low recurrence rates.

This meta-analysis evaluates the safety and outcomes of selective deep lobe parotidectomy in patients with benign deep lobe parotid tumours, including 225 cases of pleomorphic adenoma. The analysis synthesizes data from a sample of 299 patients to determine the incidence of surgical complications and recurrence rates.

Key findings indicate that the procedure is associated with low rates of serious complications. Reported rates include auricular numbness at 36.7%, temporary facial weakness at 24.2%, and contour deformity at 11.8%. Other complications were less frequent, including permanent facial weakness at 3.0%, haematoma at 3.1%, seroma at 2.7%, Frey's syndrome at 1.1%, and infection at 0.8%. The recurrence rate was reported at 0.8%.

The authors note that while the procedure appears safe, the evidence is limited by the lack of larger prospective comparative studies with long-term follow-up. Clinical application is currently supported by the low complication and recurrence rates observed in the analyzed cohort. However, the lack of longitudinal comparative data means the long-term outcomes of selective deep lobe parotidectomy compared to other techniques remain less certain.

When a person develops a benign tumor deep within the parotid gland, the primary goal of surgery is to remove the growth while protecting nearby nerves and tissues. This type of tumor, known as a pleomorphic adenoma, requires careful handling to avoid lasting complications.

A review of 299 patients undergoing a specific procedure called selective deep lobe parotidectomy shows that this approach is a safe option. While some patients experienced temporary facial weakness (24.2%) or ear numbness (36.7%), the rate of permanent facial weakness was much lower at 3.0%. Other issues like infection (0.8%) and recurrence of the tumor (0.8%) were very rare.

While these results suggest the procedure is effective, the data comes from a meta-analysis of existing cases. Because the evidence is based on gathered reports rather than a long-term follow-up study, doctors note that larger, prospective studies are still needed to confirm these safety levels over many years.

What this means for you:

Selective deep lobe parotidectomy is a safe surgical option with low rates of tumor recurrence and permanent damage.

Common questions

What are the risks of surgery for a deep lobe parotid tumor?

Patients may experience several side effects. These include temporary facial weakness (24.2%), ear numbness (36.7%), and contour deformity (11.8%). Less common issues include permanent facial weakness (3.0%), Frey's syndrome (1.1%), infection (0.8%), and small collections of blood or fluid called hematoma (3.1%) or seroma (2.7%).

How often does the tumor come back after surgery?

The data shows a very low recurrence rate of 0.8% for patients who underwent a selective deep lobe parotidectomy. This suggests the procedure is effective at removing the tumor.

Is this surgery safe for patients with these tumors?

Yes, the findings indicate that selective deep lobe parotidectomy is a safe option for these tumors. It is associated with low complication rates and low recurrence rates, though more long-term studies are needed to confirm these findings.

Study Details

Study typeMeta analysis

Sample sizen = 299

EvidenceLevel 1

PublishedSep 2026

PMID42248740

View Original Abstract ↓

Deep lobe parotid tumours are difficult to remove due to their location and proximity to the facial nerve. Total parotidectomy is standard but has high complication rates. Selective deep lobe parotidectomy preserves the superficial lobe and may reduce morbidity. This study is the first systematic review and meta-analysis of selective deep lobe parotidectomy outcomes. A PRISMA-based systematic review and meta-analysis was performed. Databases searched on 23 August 2025 included MEDLINE, Embase, CINAHL, PubMed, Google Scholar, and CENTRAL. Eligible studies reported outcomes of selective deep lobe parotidectomy. Data were analysed with a random-effects model, and risk of bias was assessed using the Newcastle-Ottawa Scale. Eight studies (299 patients) met the study criteria. All tumours were benign. Pleomorphic adenoma accounted for 225 cases (75.3%); other benign histologies were less commonly found. No malignancies were reported. Temporary facial weakness occurred in 24.2%, permanent weakness in 3.0%, Frey's syndrome 1.1%, infection 0.8%, contour deformity 11.8%, haematoma 3.1%, seroma 2.7%, auricular numbness 36.7%, and recurrence 0.8%. Heterogeneity was low. Selective deep lobe parotidectomy is a safe option for benign deep lobe tumours with low complication and recurrence rates. Larger prospective comparative studies with long-term follow up are required.

Selective deep lobe parotidectomy is a safe option for benign deep lobe parotid tumoursSelective surgery shows low complication rates for deep lobe parotid tumors

Common questions

Study Details

Global GJB2 mutation prevalence in nonsyndromic hearing impairment

One in four people with hearing loss carries a specific gene mutation

Clinical research that matters. Delivered to your inbox.

Selective deep lobe parotidectomy is a safe option for benign deep lobe parotid tumoursSelective surgery shows low complication rates for deep lobe parotid tumors

Common questions

Study Details

Global GJB2 mutation prevalence in nonsyndromic hearing impairment

One in four people with hearing loss carries a specific gene mutation

Clinical research that matters. Delivered to your inbox.

Related in ENT (Otolaryngology)

From Other Specialties