DNA-based subtypes and antimicrobial susceptibility profiles of Haemophilus influenzae and Haemophilus parainfluenzae isolated from different tonsillar sites of children undergoing tonsillectomy and/or adenoidectomy.

We did a comparative analysis between DNA-based subtypes and antimicrobial susceptibility profiles on Haemophilus influenzae and Haemophilus parainfluenzae, isolated from multiple tonsillar sites per individual from patients with chronic recurrent tonsillitis and/or tonsillar idiopathic hypertrophy and undergoing tonsillectomy and/or adenoidectomy. A total of eighty-eight Haemophilus isolates were obtained aseptically from the surface and core of tonsils and/or adenoids of 32 out of 60 patients and identified at the species level by the X and V factors and the API NH Kit. The H.

Prevalence of nodal metastases in the submuscular recess (level IIb) during selective neck dissection.

Objectives: To determine the prevalence of nodal metastases in the submuscular recess (SMR) in patients undergoing selective neck dissection (SND) and to identify potential risk factors for the presence of metastatic disease in the SMR.

Design: Prospective cohort study.

Setting: Academic tertiary care referral center.