Chondrosarcoma of the hyoid bone – Report of a case and a literature review of the suitable treatment strategy

Publication date: Available online 18 October 2016
Source:Auris Nasus Larynx
Author(s): Daisuke Maki, Taisuke Mori, Masanori Teshima, Kenya Kobayashi, Fumihiko Matsumoto, Akihiro Sakai, Kenji Okami, Seiichi Yoshimoto
Chondrosarcoma is a rare malignant tumor occurring in the trunk and long bones. We present an extremely rare case of chondrosarcoma of the hyoid bone with clinical and pathological correlation and a literature review. We searched all cases of the hyoid chondrosarcoma in PubMed (MEDLINE) between 1990 and 2015. Eighteen cases were analyzed, including the present case. Most of them were low grade type. In 12 cases where intraoperative findings were recorded, no adhesion to the surrounding tissue was observed. Chondrosarcoma of the hyoid bone is usually low grade type, and there may be no invasion to the adjacent structures even if invasion is suspected by imaging findings. In order to preserve swallowing and laryngeal function, total hyoidectomy without laryngectomy should be indicated according to the intraoperative findings. Needle biopsy is an effective diagnostic technique, but open biopsy should be avoided to prevent the dissemination. To the best of our knowledge, this is the first presentation of hyoid bone chondrosarcoma with the investigation of intraoperative findings and pre-operative diagnostic modality.



http://ift.tt/2f0NMnQ

Congenital nasal cavity stenosis in children with craniosyntosis: A report of 4 rare cases

Publication date: Available online 25 October 2016
Source:Auris Nasus Larynx
Author(s): Yew Toong Liew, Siew Shuin Soo, Anna Marie Nathan, Anura Michelle Manuel
Congenital bony nasal stenosis (CBNS) is a very rare but life-threatening cause of airway obstruction in neonates and infants. This review aims to assess the presentation and early airway management of 4 new cases of craniosynostosis with bilateral nasal cavity stenosis. Patients were treated with endoscopic endonasal widening of the nasal cavity and stenting. All patients were extubated well post-operatively with resolution of symptoms. They remained asymptomatic with stents in situ for at least 6 months with no complications reported.Minimally invasive endoscopic endonasal widening of the nasal cavity with stenting is an effective and safe way of addressing nasal cavity stenosis.



http://ift.tt/2fi2mv1

Editorial Board

Publication date: November 2016
Source:Journal of Oral Biosciences, Volume 58, Issue 4





http://ift.tt/2eYZD6k

Evaluation of a new mouse model for studying dental pulpal responses to GaAlAs laser irradiation

Publication date: Available online 27 October 2016
Source:Journal of Oral Biosciences
Author(s): Shiori Sugawara, Yoshimi Shigetani, Shinichi Kenmotsu, Takashi Okiji, Hayato Ohshima
ObjectivesThe molecular mechanisms regulating pulpal responses to GaAlAs laser irradiation remain to be clarified. This study aimed to assess the feasibility of a mouse model for studying pulpal responses to GaAlAs laser irradiation.MethodsMaxillary first molars of 5-week-old ICR mice were irradiated at an output power of 1.0W for 180s, and samples were collected at intervals of 0, 1, 3, 5, 7, 10, and 14 days. The demineralized paraffin sections were processed for hematoxylin and eosin staining, immunohistochemistry for nestin (a marker for odontoblast differentiation) and Ki67 (a marker for cell proliferation), and a terminal deoxynucleotidyl transferase dUTP nick end labeling (TUNEL) assay.ResultsThe intense nestin immunoreactivity in the odontoblast layer of the mesial pulp was weakened immediately after irradiation and was almost lost on Days 1–3, although the extent of pulpal damage was variable among individual animals. At around Day 1, numerous TUNEL-positive cells appeared in the degenerative zone and gradually decreased in number by Day 14. Active cell proliferation occurred in the mesial pulp during Days 5–10. Nestin-positive odontoblast-like cells appeared along the pulp-dentin border by Day 10, resulting in tertiary dentin formation on Day 14.ConclusionsThe current output energy induced apoptosis in the affected dental pulp, followed by active cell proliferation, resulting in tertiary dentin formation. This is the first report regarding laser irradiation of teeth in an in vivo mouse model. This model could enable further understanding of the function of certain proteins, including transcriptional factors.



http://ift.tt/2eYZKyJ

Comparing performance of Bonfils fiberscope and GlideScope videolaryngoscope for awake intubation

The recent article by Nassar et al [1] comparing performance of Bonfils fiberscope and GlideScope videolaryngoscope for awake intubation in the morbidly obese patients with expected difficult airways was of great interest to us. They showed that Bonfils fiberscope was more tolerated by patients with statistical difference, whereas GlideScope videolaryngoscope provided shorter intubation time and less intubation attempts but without statistical significance. Given that the airway management of morbidly obese patients often presents a unique challenge to the anesthesiologists, their findings have potential implications.

http://ift.tt/2eZ1nMK

Sudden cardiorespiratory collapse associated with Takotsubo cardiomyopathy upon transferring a patient to the operation bed

Here, we report a case of cardiopulmonary collapse associated with Takotsubo cardiomyopathy after moving a patient to the operation bed.

http://ift.tt/2eH5ChP

Rapid-sequence intubation of a patient with difficult airway using a double-lumen endotracheal tube with the Pentax-AWS Airwayscope and a soft-tipped tube exchanger

Rapid-sequence intubation of a double-lumen tube is difficult, especially in patients with difficult airway [1]. Here we report successful rapid-sequence intubation of a patient with difficult airway using a double-lumen endotracheal tube (DLT) with the Pentax-AWS Airwayscope (AWS) (HOYA, Tokyo, Japan) videolaryngoscope equipped with a newly developed Intlock for DLT (ITL-LL) (HOYA), combined with a soft-tipped tube exchange catheter (TE-Soft) (Cook Medical, IN, USA).

http://ift.tt/2eYUpaM