We herein report a case of Killian-Jamieson diverticulum mimicking a thyroid tumor. Killian-Jamieson diverticulum is a rare form of hypopharyngeal pulsion diverticulum resulting from herniation of mucosa and submucosa through an area of weakened musculture [1]. The diverticulum is caudal to that of the more common Zenker’s diverticulum [2]. These hypopharyngeal diverticula that cause dysphagia ...

Insecticides are contributing to global insect declines, thereby creating demand understand the mechanisms underlying reduced fitness. In eusocial Hymenoptera, inclusive fitness depends on successful mating of male sexuals (drones) and efficient collaborative brood care by female workers. Therefore, sublethal insecticide effects sperm glands used in larval feeding (hypopharyngeal (HPG)) would p...

BACKGROUND This study evaluated cervical lymph node metastases at level IIb in cases of hypopharyngeal cancer and analyzed the possibility of preservation of level IIb during neck dissection. METHODS In total, 34 patients (51 neck sides) with hypopharyngeal cancer that underwent neck dissection from April 2008 to April 2011 were retrospectively analyzed. We evaluated the distribution of metas...

Introduction: Advanced laryngeal and hypopharyngeal cancers are aggressive tumors with a poor prognosis. Multiple lymph node metastases often occur in the neck as well as in the upper mediastinum and thus upper mediastinal dissection is crucial to improving the cure rate. However, excessive mediastinal dissection can increase postoperative morbidity and mortality making it important to employ t...

Transesophageal echocardiography (TEE) is considered relatively safe but semi-invasive. The hypopharyngeal and esophageal injury is infrequent complication of TEE but could be serious, even life-threatening. We present a case of a 74-year-old man who experienced a deep neck infection secondary to hypopharyngeal injury following TEE. The diagnosis was made because of the subcutaneous emphysema d...

The present study aimed to investigate whether the inhibition of cluster of differentiation (CD)44 expression reduces the tumorigenicity of CD44+ cancer stem cells in hypopharyngeal cancer. To assess this, effective recombinant CD44 short hairpin RNA-expressing lentiviruses were produced. Lentivirus-mediated RNA interference (RNAi) was then used to knockdown CD44 gene expression in the hypophar...