Wednesday, August 4, 2021

Secondary tracheo-innominate artery fistula after tracheal incision: a case study

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Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi. 2021 Jul 7;56(7):767-769. doi: 10.3760/cma.j.cn115330-20200824-00689.

NO ABSTRACT

PMID:34344108 | DOI:10.3760/cma.j.cn115330-20200824-00689

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Xanthomas with bilateral carotid artery involvements: a case report

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Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi. 2021 Jul 7;56(7):769-771. doi: 10.3760/cma.j.cn115330-20201116-00872.

NO ABSTRACT

PMID:34344109 | DOI:10.3760/cma.j.cn115330-20201116-00872

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Clinical management strategies of pulsatile tinnitus with transverse sinus stenosis

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Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi. 2021 Jul 7;56(7):704-712. doi: 10.3760/cma.j.cn115330-20200820-00686.

ABSTRACT

Objective: To study the clinical diagnosis and treatment strategies for vein-related pulsatile tinnitus patients with transverse sinus stenosis. Methods: The clinical data of patients with vein-related pulsatile tinnitus, from January 2015 to August 2019, were collected,whose digital subtraction angiography showing transverse sinus stenosis. Taking December 2019 as the last follow-up time, we analyzed the clinical characteristics, CT angiography and digital subtraction angiography results, lumbar puncture pressure and cerebrospinal fluid composition, and other auxiliary examination results (pure tone audiometry, fundus examination of papilledema, carotid ultrasonography, bone density screening, endocrinous test), as well as tinnitus handicap inventory, treatment options and follow-up results. Re sults: 83 patients were enrolled with female of 89.2% (74/83) and male of 10.8%(9/83); 65.1% (54/83) with right tinnitus, 31.3% (26/83) with left tinnitus, and 3.6% (3/83) with bilateral tinnitus; 67.5% (56/83) with right dominant sinus, 19.3% (16/83) with left dominant sinus, 13.3% (11/83) with bilateral equalization; Bilateral and ipsilateral stenosis accounted for 55.4% and 44.6% respectively; BMI was overweight or obese in 41 cases (49.4%, 41/83). Patients with tinnitus handicap inventory level three or above accounted for 79.5% (66/83). Eventually, 33 patients chose conservative observation (39.8%, 33/83), 40 patients (48.2%), 8 patients (9.6%) and 2 patients (2.4%) received sigmoid sinus-related surgery, interventional surgery, or emissary vein occlusion respectively. The mean follow-up time of 74 patients was 26.2 months. The data of 48 surgery patients showed that the pressure differences of venous sinus among the recurrent patients were more obvious; Interventional surg ery with simultaneous stenting placement was effective. Tinnitus did not decrease in two patients with emissary vein occlusion. Analysis of 26 patients with lumbar puncture revealed eight cases of normal cranial pressure and 18 cases of high cranial pressure. The sinus pressure difference between the two groups was different (P=0.025), but the difference of age of onset, concomitant symptoms, BMI, proportion of empty sella or papilledema was not statistically significant (P>0.05). Conclusions: The evaluation of patients with vein-related pulsatile tinnitus requires a standardized procedure. Papilledema cannot be used as a sensitive indicator in patients with early intracranial hypertension. Venous sinus pressure difference may be one of the indicators of intracranial hypertension, and the lumbar puncture is the gold standard for the diagnosis. Weight loss can be used as a conservative treatment during the observation period. Significant sinus stenosis is a ri sk factor for recurrence in patients undergoing sigmoid sinus surgery. Interventional stenting is an effective treatment for tinnitus secondary to transverse sinus stenosis.

PMID:34344096 | DOI:10.3760/cma.j.cn115330-20200820-00686

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Endoscopic lateral neck dissection via the breast and transoral approaches for papillary thyroid carcinoma: a report of 10 cases

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Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi. 2021 Jul 7;56(7):751-754. doi: 10.3760/cma.j.cn115330-20201015-00805.

ABSTRACT

Objective: To investigate the feasibility of endoscopic lateral neck dissection via the breast and transoral approaches (ELNDBTOA) for papillary thyroid carcinoma (PTC). Methods: From February 2015 to April 2019, 10 patients with PTC (cN1b) including 1 male and 9 females aged from 22 to 53 years old received ELNDBTOA in the General Surgery Department of Zhongshan Hospital, Xiamen University. Total thyroidectomy, the central lymph node dissection and the selective neck dissection (levels Ⅱ, Ⅲ and Ⅳ) were performed endoscopically via the breast approach, and then the residual lymph nodes were dissected via transoral approach. The medical records, operation time, blood loss, complications and postoperative follow-up outcomes were analyzed retrospectively. SPSS 22.0 software package was used for statistical processing of clinical data of patients. Results: All cases were successfully treated with ELNDBTOA without transfer to open surgery. The average operative time was (362.5±79.7) min, the blood loss was (23.0±14.9) ml, and the postoperative hospital stay was (5.1±1.3) days. The mean number of harvested cervical lymph nodes were (34.2±25.8), and the mean number of positive lymph nodes were (6.5±4.9). Lymph nodes were dissected by the further dissection via oral approach in 6 patients and a total of 9 lateral lymph nodes were havested from 2 of the 6 patients, with 3 positive lymph nodes. Two patients had transient skin numbness in the mandibular area and recovered within two weeks. One patient developed transient hypoparathyroidism and recovered within two months. No secondary bleeding, recurrent laryngeal nerve paralysis, chylous leakage, neck infection, permanent hypoparathyroidism or other complications were observed. The follow-up time was from 16 to 66 mon ths with a median of 42.5 months, no tumor recurrence or metastasis occurred, and also no obvious deformity, abnormal sensation or movement in the chest, neck and mouth was observed. Conclusions: ELNBTOA is safe and feasible, with good cosmetic outcome.

PMID:34344103 | DOI:10.3760/cma.j.cn115330-20201015-00805

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Study on changes of voice characteristics after adenotonsillectomy or adenoidectomy in children

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Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi. 2021 Jul 7;56(7):724-729. doi: 10.3760/cma.j.cn115330-20200813-00672.

ABSTRACT

Objective: To study voice changes in children after adenotonsillectomy or adenoidectomy and the relationship with the vocal tract structure. Methods: Fifty patients were recruited in this study prospectively, aged from 4 to 12 years old with the median age of 6. They were underwent adenotonsillectomy or adenoidectomy in Beijing Tongren Hospital, Capital Medical University from July 2019 to August 2020. In the cases, there are 31 males and 19 females. Thirty-six patients underwent adenotonsillectomy and 14 patients underwent adenoidectomy alone. Twenty-two children (13 males, 9 females) with Ⅰ degree of bilateral tonsils without adenoid hypertrophy and no snoring were selected as normal controls. Adenoid and tonsil sizes were evaluated. Subjective changes of voice were recorded after surgery. More over, voice data including fundamental frequency(F0), jitter, shimmer, noise to harmonic ratio(NHR), maximum phonation time(MPT), formant frequencies(F1-F5) and bandwidths(B1-B5) of vowel/a/and/i/were analyzed before, 3 days and 1 month after surgery respectively.SPSS 23.0 was used for statistical analysis. Results: Thirty-six patients(72.0%,36/50) complained of postoperative voice changes. The incidence was inversely correlated with age. In children aged 4-6, 7-9, and 10-12, the incidence was 83.3%(25/30), 63.6%(7/11) and 44.4%(4/9) respectively. Voice changes appeared more common in children underwent adenotonsillectomy(77.8%,28/36) than in those underwent adenoidectomy alone(57.1%,8/14), but there was no statistical difference. After operation, for vowel/a/, MPT(Z=2.18,P=0.041) and F2(t=2.13,P=0.040) increased, B2(Z=2.04,P=0.041) and B4(Z=2.00,P=0.046) decreased. For vowel/i/, F2(t=2.035,P=0.050) and F4( t=4.44,P=0.0001) increased, B2(Z=2.36,P=0.019) decreased. Other acoustic parameters were not significantly different from those before surgery. The F2(r=-0.392, P =0.032) of vowel/a/and F2(r=-0.279, P=0.048) and F4 (r=-0.401, P =0.028) of vowel/i/after adenotonsillectomy were significantly higher than those of adenoidectomy alone. Half of patients with postopertive voice changes can recover spontaneously 1 month after surgery. Conclusions: Voice changes in children underwent adenotonsillectomy or adenoidectomy might be related to their changes in formants and bandwidths. The effect of adenotonsillectomy on voice was more significant compared with that of adenoidectomy alone. The acoustic parameters did not change significantly after surgery except MPT.

PMID:34344099 | DOI:10.3760/cma.j.cn115330-20200813-00672

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Meta‐analysis on continuous nerve monitoring in thyroidectomies

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Abstract

In the last decade, the introduction of continuous intraoperative recurrent laryngeal nerve (RLN) monitoring (C-IONM) has enabled the operator to verify the functional integrity of the vagus nerve–recurrent laryngeal nerve (VN-RLN) axis in real-time. We aim to present the current evidence on C-IONM utility for thyroid surgery by conducting the first meta-analysis on this technique. A systematic review of literature was conducted by two independent reviewers via Ovid in the Medline, EMBASE, and Cochrane reviews databases. The search was limited to human subject research in peer-reviewed articles of all languages published between Jan 1946 and April 2020. Medical subject headings (MeSH) terms utilized were thyroid surgery, thyroidectomies, recurrent laryngeal nerve, vagal nerve, monitor, and stimulation. Thirty-eight papers were identified from Ovid, another six papers were identified by hand-search. A random effect meta-analysis was performed with assessment of heterogeneity usin g the I 2 value. A total of 23 papers that investigated the use of continuous vagal nerve monitoring during thyroid surgery were identified. The proportion of nerves at risk (NAR) with temporary RLN paralysis postoperation was 2.26% (95% CI: 1.6–2.9, I 2 = 37). The proportion of NAR with permanent RLN palsy postoperation was 0.05% (95% CI: 0.08–0.2, I 2 = 0). In this meta-analysis, there is one case of temporary vagal nerve paralysis secondary to VN electrode dislodgement, and a case of hemodynamic instability manifested in bradycardia and hypotension in the initial phase of surgery shortly after calibration. C-IONM is a safe and effective means by which RLN paralyses in thyroid surgery can be reduced.

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PD‐L1 is upregulated via BRD2 in head and neck squamous cell carcinoma models of acquired cetuximab resistance

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Abstract

Background

Tumor models resistant to EGFR tyrosine kinase inhibitors or cisplatin express higher levels of the immune checkpoint molecule PD-L1. We sought to determine whether PD-L1 expression is elevated in head and neck squamous cell carcinoma (HNSCC) models of acquired cetuximab resistance and whether the expression is regulated by bromodomain and extraterminal domain (BET) proteins.

Methods

Expression of PD-L1 was assessed in HNSCC cell line models of acquired cetuximab resistance. Proteolysis targeting chimera (PROTAC)- and RNAi-mediated targeting were used to assess the role of BET proteins.

Results

Cetuximab-resistant HNSCC cells expressed elevated PD-L1 compared to cetuximab-sensitive controls. Treatment with the BET inhibitor JQ1, the BET PROTAC MZ1, or RNAi-mediated knockdown of BRD2 decreased PD-L1 expression. Knockdown of BRD2 also reduced the elevated levels of PD-L1 seen in a model of acquired cisplatin resistance.

Conclusions

PD-L1 is significantly elevated in HNSCC models of acquired cetuximab and cisplatin resistance where BRD2 is the primary regulator.

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Suturing of the Arachnoid Membrane for Reconstruction of the Cisterna Magna: Technical Considerations

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World Neurosurg. 2021 Jul 31:S1878-8750(21)01138-4. doi: 10.1016/j.wneu.2021.07.129. Online ahead of print.

ABSTRACT

BACKGROUND: Postoperative cerebrospinal fluid (CSF) fistula following cranial or spinal surgery is associated with increased morbidity and mortality. To prevent CSF fistulas, various techniques have been described.

OBJECTIVE: To describe the arachnoid membrane continuous-running-suture technique in cisterna magna reconstruction for preventing postoperative CSF leakage.

METHODS: After craniotomy and dural opening, the incision of the arachnoid of the cisterna magna was performed using a diamond blade. To prevent the arachnoid from drying out and shrinking during surgery, it was periodically irrigated with warm saline solution. Posterior fossa surgery was performed. While closing the membranes, the arachnoid membrane was closed with the running-suture technique. After the first surgical knot was made in the cranial en d of the arachnoid opening, continuous suturing with a 2-mm distance between the stitches was performed without stretching them. After every 3 stitches, the free end of the thread was pulled gently along the suturing axis, and the edges of the arachnoid were closed. After the arachnoid edges were approximated, the surgical knot was tied. Watertight closure was checked by performing the valsalva maneuver at the end of the surgery.

RESULTS: No CSF leakages were observed after surgery.

CONCLUSION: Arachnoid membrane suturing seems to be safe and effective in preventing postoperative CSF leakage and CSF-related complications. Using continuous running suturing alone, without any sealant, might be effective in cases with untraumatized arachnoid membrane.

PMID:34343681 | DOI:10.1016/j.wneu.2021.07.129

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Trans-hyoid hyoidthyroidpexy: A modified technique for selected cases of obstructive sleep apnea

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Publication date: November–December 2021

Source: American Journal of Otolaryngology, Volume 42, Issue 6

Author(s): Sherif Askar, Ali Awad, Tamer Oraby, Alaa Khazbak

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The role of adjuvant radiation therapy for locoregionally recurrent papillary thyroid carcinoma

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Saudi Med J. 2021 Aug;42(8):832-837. doi: 10.15537/smj.2021.42.8.20210127.

ABSTRACT

OBJECTIVES: To evaluate the role of adjuvant radiation therapy in patients with locoregionally recurrent (rpT4/N1b) papillary thyroid carcinoma (PTC).

METHODS: The medical records of patients with rpT4/N1b PTC who were treated between January 2001 and December 2016 were reviewed. A total of 57 patients were analyzed, of which 24 patients were treated with adjuvant radiation therapy, and 33 pat ients did not receive adjuvant radiation therapy. Survival outcomes were compared between the 2 treatment groups. The primary endpoint was locoregional recurrence-free survival rate.

RESULTS: The median follow-up period for all patients was 10.3 years (range, 2.8-19.2 years). The 15-year locoregional recurrence-free survival rate was 80.5% for those who received adjuvant radiation therapy and 28.1% for those who did not (p<0.001). The 15-year distant metastasis-free survival rate was 48.8% for those who received adjuvant radiation therapy and 33.4% for those who did not (p=0.906). The 15-year overall survival rate was 69.7% for those who received adjuvant radiation therapy and 53.1% for those who did not (p=0.921).

CONCLUSIONS: Adjuvant radiation therapy ensured favorable locoregional recurrence-free survival in patients with rT4/N1b PTC and might contribute to improving patients' quality of life by reducing the need for additional salvage surgery and the economic burden of other salvage treatments, such as surgery or radioactive iodine therapy.

PMID:34344806 | DOI:10.15537/smj.2021.42.8.20210127

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Severe and persistent coronavirus disease 2019 cough resulting in bone flap displacement and pseudomeningocele

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Surg Neurol Int. 2021 Jul 12;12:348. doi: 10.25259/SNI_405_2021. eCollection 2021.

ABSTRACT

BACKGROUND: Cough is one of the most common symptoms of coronavirus disease 2019 (COVID-19) infection. This relatively benign symptom may lead to serious sequelae, especially in postoperative neurosurgical patients.

CASE DESCRIPTION: Here, we report a case of bone flap displacement, pseudomeningocele formation, and consequent cerebrospinal fluid leak in a patient with COVID-19 infection who recently underwent craniotomy for excision of cerebral metastasis. We highlight the pathophysiologic mechanisms of cough that may cause increased intracranial pressure (ICP), leading to the postoperative morbidity.

CONCLUSION: Aside from additional risks to the patient's health and increased treatment costs, these complications also lead to subsequent delays in the management of the underlying disease. Symptomatic treatment of cough is advised to prevent complications resulting from increased ICP.

PMID:34345488 | PMC:PMC8326096 | DOI:10.25259/SNI_405_2021

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