简介:Yamen(GV15)Location:0.5cundirectlyabovethemidpointoftheposteriorhairline.
简介:Headandneckcancers(HNCs)areaggressivetumorsthattypicallydemonstrateahighglycolyticrate,whichresultsinresistancetocytotoxictherapyandpoorprognosis.Duetotheirlocationthesetumorsspecificallyimpairfoodintakeandqualityoflife,sothatpreventionofweightlossthroughnutritionsupportbecomesanimportanttreatmentgoal.Dietaryrestrictionofcarbohydrates(CHOs)andtheirreplacementwithfat,mostlyinformofaketogenicdiet(KD),havebeensuggestedtoaccommodateforboththealteredtumorcellmetabolismandcancer-associatedweightloss.Inthisreview,IpresentthreespecificrationalesforCHOrestrictionandnutritionalketosisassupportivetreatmentoptionsfortheHNCpatient.Theseare(1)targetingtheoriginandspecificaspectsoftumorglycolysis;(2)protectingnormaltissuefrombutsensitizingtumortissuetoradiation-andchemotherapyinducedcellkill;(3)supportingbodyandmusclemassmaintenance.WhilemostofthesebenefitsofCHOrestrictionapplytocanceringeneral,specificaspectsofimplementationarediscussedinrelationtoHNCpatients.WhileCHOrestrictionseemsfeasibleinHNCpatientstheavailableevidenceindicatesthatitsrolemayextendbeyondfightingmalnutritiontofightingHNCitself.
简介:ThereisnoaccurateanalyticalapproachfortheacousticperformancepredictionofHelmholtzresonatorwithconicalneck,whichhasbroadbandacousticattenuationperformanceinthelowfrequencyrange.Topredicttheacousticperformanceoftheresonatoraccurately,ageneraltheorymodelbasedontheone-dimensionalanalysisapproachwithacousticlengthcorrectionsisdeveloped.Thesegmentationmethodisusedtocalculatetheacousticparametersforsoundpropagationinconicaltubes.Andthen,anapproximateformulaisdeducedtogiveaccuratecorrectionlengthsforconicaltubeswithdifierentgeometries.Thedeviationsoftheresonancefrequencybetweenthetransmissionlossresultsobtainedbythegeneraltheorywithacousticlengthscorrectionandtheresultsfromthefiniteelementmethodandexperimentsarelessthan2Hz,whichismuchbetterthantheresultsfromone-dimensionalapproachwithoutcorrections.Theresultsshowthatthemethodofacousticlengthcorrectionfortheconicalneckgreatlyimprovedtheaccuracyoftheone-dimensionalanalysisapproach,anditwillbequickandaccuratetopredictthesoundattenuationpropertyofHelmholtzresonatorwithconicalneck.
简介:摘要本文报道1例Van Neck-Odelberg病。患儿男,11岁。骨盆平片示右侧坐骨耻骨连接处局部膨隆,周围见硬化边。CT平扫示骨质不连续,T1WI呈低信号,T2WI呈高信号,DWI示病变内水分子扩散受限。超声表现为病灶似骨皮质回声,内无彩色血流信号。患儿经保守治疗后症状消失。
简介:AbstractLeopard attacks on humans are reported most often from the Indian subcontinent. The bite wounds are complex injuries infected with polymicrobial inoculum and may present as punctures, abrasions, lacerations or avulsions. The presentation and acceptable treatment of these injuries vary according to the wound. We hereby describe the clinical presentation and treatment of a male victim with leopard bite injuries on the head and neck region. As bite injuries are commonly found on and around the face, maxillofacial surgeons should be familiar with the therapy. Through thorough clinical and radiological examination, it is essential to prevent missing any hidden injuries, which can easily turn lethal. To benefit the rural population, more health facilities need to be established in remote areas.
简介:AbstractObjective:Management of postoperative pain after head and neck cancer surgery is a complex issue, requiring a careful balance of analgesic properties and side effects. The objective of this review is to discuss the efficacy and safety of multimodal analgesia (MMA) for these patients.Methods:Pubmed, Cochrane, Embase, Scopus, and clinicaltrials.gov were systematically searched for all comparative studies of patients receiving MMA (nonsteroidal anti-inflammatory drugs (NSAIDs), acetaminophen, anticonvulsants, local anesthetics, and corticosteroids) for head and neck cancer surgeries. The primary outcome was additional postoperative opioid usage, and secondary outcomes included subjective pain scores, complications, adverse effects, and 30-day outcomes.Results:A total of five studies representing 592 patients (MMA, n = 275; non-MMA, n = 317) met inclusion criteria. The most commonly used agents were gabapentin, NSAIDs, and acetaminophen (n = 221), NSAIDs (n = 221), followed by corticosteroids (n = 35), dextromethorphan (n = 40), and local nerve block (n= 19). Four studies described a significant decrease in overall postoperative narcotic usage with two studies reporting a significant decrease in hospital time. Subjective pain scores widely varied with two studies reporting reduced pain at postoperative day 3. There were no differences in surgical outcomes, medical complications, adverse effects, or 30-day mortality and readmission rates.Conclusion:MMA is an increasingly popular strategy that may reduce dependence on opioids for the treatment of postoperative pain. A variety of regimens and protocols are available for providers to utilize in the appropriate head and neck cancer patient.
简介:AbstractObjective:Few reports have described intracranial hemangiomas and structural brain and/or arterial anomalies in patients with infantile hemangiomas. This study was performed to examine the magnetic resonance imaging findings of intracranial abnormalities in a group of infants with hemangiomas in the head and neck regions.Methods:We reviewed our hemangioma treatment center database from January 2010 to July 2018 to assess the prevalence of intracranial abnormalities in infants with hemangiomas in the head and neck regions. Clinical and electronic magnetic resonance imaging data were also retrieved from the patients’ medical charts.Results:Of 436 patients with infantile hemangiomas in the head and neck regions, 23 (5%) had intracranial abnormalities, including 20 (23%) with segmental hemangiomas and 3 (1 %) with focal hemangiomas. In total, 14 patients had intracranial hemangiomas located within the ventricle and cisterns or ipsilateral lesions involving the extradural space. Eight patients had intracranial structural abnormalities, such as cerebellar dysplasia, Dandy-Walker malformation, and hydrocephalus. Five patients had intracranial arterial anomalies, and three patients had arteriovenous malformations.Conclusions:These findings support the hypothesis that intracranial hemangiomas are commonly associated with segmental infantile hemangiomas in the head and neck regions.
简介:AbstractPapillary thyroid carcinoma (PTC) has a high propensity for regional metastases, however, the impact of such metastases on the outcome of the patients is minimal. The central compartment of the neck is considered the first and the most common echelon of metastases from thyroid carcinoma. Physical examination along with ultrasonography are the gold standard pre-operative evaluation of patients with PTC. Ultrasonography is highly sensitive in evaluating lateral neck nodes, however, its value in evaluating the central compartment is limited, resulting in a relatively high rate of occult metastases in this compartment. The main potential complications of para-tracheal neck dissection (PTND) are recurrent laryngeal nerve paralysis and hypocalcemia and these may be higher in patients undergoing PTND compared to thyroidectomy alone. New histological data is available showing no evidence of lymph nodes in the central compartment above a level parallel to the inferior border of the cricoid cartilage. These findings support withholding dissection of the upper para-tracheal region routinely as a part of PTND in patients with well-differentiated thyroid cancer. By doing that, the complications may be lower and identical to thyroidectomy alone, thus may abolish arguments against more common use of elective PTND in patients with thyroid carcinoma.