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We describe the case of a patient who swallowed a small fish bone and felt it lodge in her pharynx, but failed to seek medical attention in a timely manner. One week later, no foreign body was found in the hypopharynx or larynx, but a small purulent cyst was present in the epiglottic vallecula. A computed tomography scan showed a high-density area on the lingual surface of the epiglottis, which was considered to represent an embedded fish bone. A week later, the patient’s discomfort had subsided, and flexible videoendoscopy showed that the purulent cyst in the epiglottic vallecula had disappeared. We surmise that the purulent cyst had ruptured spontaneously and the foreign body had been discharged. This represents an example of how an impacted small foreign body may be spontaneously discharged from the body.

A quantum random walk optimization model and algorithm in network cluster server traffic control and task scheduling is proposed. In order to solve the problem of server load balancing, we research and discuss the distribution theory of energy field in quantum mechanics and apply it to data clustering. We introduce the method of random walk and illuminate what the quantum random walk is. Here, we mainly research the standard model of one-dimensional quantum random walk. For the data clustering problem of high dimensional space, we can decompose one m-dimensional quantum random walk into m one-dimensional quantum random walk. In the end of the paper, we compare the quantum random walk optimization method with GA (genetic algorithm), ACO (ant colony optimization), and SAA (simulated annealing algorithm). In the same time, we prove its validity and rationality by the experiment of analog and simulation.

A quantum optimization scheme in network cluster server task scheduling is proposed. We explore and research the distribution theory of energy field in quantum mechanics; specially, we apply it to data clustering. We compare the quantum optimization method with genetic algorithm (GA), ant colony optimization (ACO), simulated annealing algorithm (SAA). At the same time, we prove its validity and rationality by analog simulation and experiment. [ABSTRACT FROM AUTHOR]

Objective: To systematically review the literature regarding the effectiveness and adverse reaction of epidermal growth factor receptor-monoclonal antibodies (RGFR-mAbs) in improving the prognosis of R/M HNSCC so as to develop evidence-based recommendations for treatment., Methods: Comprehensively searches were performed for the databases of CBM, PubMed, Embase and Cochrane to identify the published studies on the effect of RGFR-mAbs in recurrent and/or metastatic head and neck squamous carcinoma (R/M HNSCC) patients. Primary outcomes included overall survival (OS), progression-free survival (PFS) and overall response rate (ORR). And secondary outcomes included such severe adverse events (grade III-IV) as neutropenia, anemia, thrombocytopenia, skin reactions, hypokalemia, vomiting and hypomagnesemia, etc., Results: A meta-analysis was conducted for 5 randomized controlled trials involving a total of 1 615 patients. Pooled data suggested the efficacies of EGFR-mAbs in R/M HNSCC patients. And adding EGFR-mAbs to conventional therapy led to significantly improved efficacies for R/M HNSCC (ORR: RR=1.61, 95% CI: 1.34-1.92, P<0.001; PFS: HR=0.68, 95% CI: 0.61-0.76, P<0.001; OS: HR=0.84, 95% CI: 0.75-0.95, P=0.004). Adverse events were comparable between EGFR-mAbs and control groups, except for increased incidence in skin reactions, hypomagnesemia, anorexia, exsiccosis and thrombogenesis., Conclusions: Existing randomized controlled trials support the efficacies of EGFR-mAbs for R/M HNSCC. During Mabs therapy, skin reactions and hypomagnesemia should be closely monitored.

Objective: To perform a Meta-analysis of all randomized controlled trials that compared the efficacy and adverse events profile of Mabs for LA HNSCC., Method: Several databases were searched, including CBM, PUBMED, EMBASE, and CENTRAL. Primary outcomes included overall response rate (ORR), overall survival (OS), progression-free survival (PFS). Secondary outcomes included serious adverse events, such as grade 3-4 skin reaction, dysphagia, mucositis, and nausea/vomiting. The results were expressed as relative ratio (RR) or hazard rate (HR) with their corresponding 95% CI., Result: The final analysis included 10 trials. The primary analyses indicated that Mabs did not improve ORR and PFS, except OS for locoregionally advanced (LA) HNSCC [ORR 1.21, 95% CI (0.97 - 1.49); PFS 0.87, 95% CI (0.75 - 1.01); OS 0.82, 95% CI (0.71 - 0.95)]. Analysis of adverse effects demonstrated that grade 3 - 4 skin reaction ERR 1.87, 95% CI (1.11 - 3.16)] was statistically significantly associated with Mabs except dysphagia ERR 0. 95, 95% CI (0.75 - 1.19)], Mucositis ERR 1.03, 95% CI (0.67 - 1.57)], and nausea/vomiting ERR 1.15, 95% CI (0.71 - 1.86)]., Conclusion: Anti-EGFR Mabs may be satisfactory for improving OS of LA HNSCC. During the Mabs therapy, skin reaction should be much more monitored.

Objective: To investigate the clinicopathologic features and associated risk factors for bilateral neck node metastasis (BNM) in head and neck squamous cell carcinoma (HNSCC)., Methods: Two hundred eighty-six cases with HNSCC were retrospectively studied, including 83 cases of oral tongue cancers, 101 cases of hypopharyngeal cancers and 102 cases of supraglottic laryngeal cancers. All patients had unilateral or bilateral cervical lymph node metastasis confirmed by postoperative pathologic examinations. The following factors were evaluated to determine the risk for BNM in HNSCC: T staging, size, location, trans-midline condition, growth pattern, pathologic grading and infiltration of primary tumors; N staging; the size, number and extracapsular spread (ECS) of ipsilateral metastatic nodes; the number of involved levels on the ipsilateral neck. Chi-square test and logistic regression test were used for statistical analysis., Results: BNM was found in 86 (30.1%) of 286 patients with HNSCC, including 52 (18.2%) cases of contralateral occult neck node metastasis. The incidence of BNM was 35.6% (36/101) in hypopharyngeal cancer, 31.4% (32/102) in supraglottic laryngeal cancer and 21.7% (18/83) in oral tongue cancer, respectively. N staging, the number and ECS of ipsilateral metastatic nodes, and the number of involved levels on the ipsilateral neck were important factors contributing to BNM. Multiple logistic regression analysis revealed that midline passing of primary tumor was associated with BNM in oral tongue cancer. The midline passing and ECS of ipsilateral metastatic node were key factors for BNM in hypopharyngeal and supraglottic laryngeal cancers. T staging, size and midline passing of primary tumor were closely related to BNM in oral tongue cancer. T staging and midline passing were associated with BNM in hypopharyngeal cancer. Midline passing was an important factor related to BNM in supraglottic laryngeal cancer., Conclusion: Midline passing of primary tumor is the most important factor determining BNM in hypopharyngeal, supraglottic laryngeal and oral tongue cancers, whereas ECS of ipsilateral metastatic node is the most important factor impacting BNM in hypopharyngeal and supraglottic laryngeal cancers.

Objective: To evaluate the clinical application value of nasal airway obstruction objectively and quantificationally by acoustic rhinometry (AR) in children with adenoid hypertrophy., Method: Thirty patients with adenoid hypertrophy were examined with AR and questionnaire at preoperative and eight weeks after surgery. The values of AR were compared with those of 27 normal controls., Result: There were significant differences between preoperative and postoperative in NAR and NPV (P < 0.01), no significant difference was observed between preoperative and postoperative in MCSA (P > 0.05); There were significant differences in NAR, NPV, MCSA between the patient group and the control group (P < 0.01); There were significant differences between postoperative and the control group in NPV and MCSA (P < 0.01), no significant difference was observed between postoperative and the control group in TNAR (P > 0.05); There was negative correlation between MCSA and symptom scores (r = -0. 519, P < 0.05). No significant correlation was observed between NAR and NPV and symptom scores (P > 0.05)., Conclusion: Acoustic rhinometry was an objective and quantitative method for evaluating nasal airway in children with adenoid hypertrophy. In interpretation the relationships of the results of acoustic rhinometry reflection measurements and subjective symptoms, MCSA should be the main reference.

Objective: To take an objective phonation assessment for the patients who have taken the tracheo-esophageal (TE) shunt procedure after total laryngectomy., Method: Twenty-four patients after TE shunt procedure were selected as TE group. Esophageal speakers after total laryngectomy and normal subjects were considered as controls. All the subjects of three groups took part in the voice acoustic assessment and MPT measurement. Twenty TE speakers took part in intra-tracheal pressure measurement. TE speakers and esophageal speakers participated in the electronic laryngoscope examination., Result: There were no significant differences between TE group and esophageal group in every acoustic parameters, but there were very remarkable differences between TE group and normal subjects in jitter, shimmer, harmonics to noise ratio and normalized noise energy. The pressure of TE speakers for comfortable /a/ is (2.86 +/- 0.69) kPa. The pharyno-esophageal segment vibrated regularly in most alaryngeal speakers and shapes of neo-glottis of most alaryngeal speakers were circular., Conclusion: Acoustic parameters of TE speakers were similar to those of esophageal speakers, but the tone of TE speakers was more similar to the normal controls. Speaking of the patients after the TE shunt procedure is laborsaving.