Prognostic scoring models in parotid gland carcinoma.

BACKGROUND: The aim was to identify prognostic factors and test three prognostic scoring models that predicted the risk of recurrence in patients with parotid gland carcinoma. METHODS: All Danish patients with parotid gland carcinoma, treated with curative intent, from 1990 to 2015 (n = 726) were included. Potential prognostic factors were evaluated using Cox regression and competing risk analyses. The concordance of each prognostic model was estimated using Harrel's C index. RESULTS: The study population consisted of 344 men and 382 women, with a median age of 63 years. Age above 60 years, high grade histology, T3/T4 tumor, regional lymph node metastases, and involved surgical margins were all associated with a significant reduction in recurrence-free survival. The prognostic model that agreed best with actual outcomes had a C-index of 0.76. CONCLUSION: Prognostic scoring models may improve individualized follow-up strategies after curatively intended treatment for patients with parotid gland carcinoma.

Surgical treatment of the neck in patients with salivary gland carcinoma.

BACKGROUND: Elective neck dissection (END) in patients with salivary gland carcinoma is controversial and there are no universally accepted guidelines. METHODS: Patients were identified from the Danish Head and Neck Cancer Group. Between 2006 and 2015, 259 patients with primary salivary gland carcinoma were treated with END. Variables potentially associated with regional metastases were analyzed using logistic regression. Neck recurrence-free survival was calculated using the Kaplan-Meier method. RESULTS: Occult metastases were found in 36 of the patients treated with END (14%) and were particularly frequent among patients with T3/T4 tumors and high-grade histology tumors. In multivariate analyses, high-grade histology and vascular invasion were associated with occult metastases. CONCLUSION: We recommend END of levels II and III for patients with high-grade or unknown histological grade tumors, and for T3/T4 tumors. Levels I, II, and III should be included in END in patients with submandibular, sublingual, or minor salivary gland carcinomas.

Fusobacterium necrophorum: most prevalent pathogen in peritonsillar abscess in Denmark.

BACKGROUND: Group A streptococci are commonly regarded as the most prevalent cause of acute bacterial tonsillitis and peritonsillar abscess (PTA). However, the majority of PTA aspirates also contain strains of anaerobes, and accumulating evidence indicates that Fusobacterium necrophorum (FN) could be involved in acute tonsillitis. The purpose of the present study was to describe the epidemiology and bacteriology of PTA in Denmark, with particular emphasis on correlations between microbiological, clinical, and laboratory data. METHODS: A retrospective study on all patients with PTA admitted to the ear, nose, and throat department at Aarhus University Hospitals from January 2001 through December 2006 was conducted. RESULTS: In total, 847 patients were included in the study. The mean annual incidence of PTA was 41 cases/100,000 population. FN was the most frequently detected bacteria (in 23% of cultures), followed by group A streptococci (in 17%) and groups C and G streptococci (counted together, in 5%). Of the 191 FN isolates detected, 155 (81%) grew as pure culture. Patients infected with FN were significantly younger than patients infected with other strains of bacteria (P < .001). Patients with FN exhibited significantly higher neutrophil counts (P < .001) and C-reactive protein values (P = .01) than did patients infected with other bacteria. CONCLUSIONS: To our knowledge, this study is the first report of FN being the most prevalent pathogen in PTA patients. The significantly higher neutrophil counts and C-reactive protein values strongly indicate the pathogenic importance of FN in PTA. The widespread reliance on rapid streptococcal antigen test in general practice to appoint patients for antibiotics and the highest PTA incidence ever reported raise concern that highly virulent bacteria may be left initially untreated.