Synchronous occurrence of extramedullary plasmacytoma and squamous cell carcinoma in situ in the larynx: a case report

Extramedullary plasmacytoma of the larynx is rare, especially when coexisted with squamous cell carcinoma in situ. We report a 56-year-old woman with hoarseness for 6 months and dysphonia for a week. Fiberoptic laryngoscopic examination showed a red, smooth-surface swelling in the submucous region of the left ventricle and ventricular band of the larynx. The patient underwent vertical laryngectomy and modified left neck dissection. Postoperative pathologic examination revealed coexisting plasmacytoma and carcinoma in situ. Bone marrow biopsy and systemic radiogram showed no positive findings. The hepatic and renal functions were normal. Monoclonal immunoglobulin light chain of type kappa was detected in urine. Hence, a laryngeal extramedullary plasmacytoma with carcinoma in situ was diagnosed. No recurrence or progression was observed during a 2-year follow-up. Here, we discussed the risk factors, diagnosis, and therapy for this rare disease.

Scheduling a Bounded Parallel-Batching Machine with Incompatible Job Families and Rejection

We study a scheduling problem with incompatible job families and rejection on a parallel-batching machine,where the objective is to minimize the makespan of all accepted jobs plus the total penalty of all rejected jobs.We provide a polynomial-time algorithm for the case where all jobs have identical release dates and a pseudo-polynomial-time algorithm for the case where the number of distinct release dates is fixed.We also present a 2-approximation algorithm and a polynomial-time approximation scheme for the general problem.

芒针恢刺治疗髂胫束摩擦综合征-随机临床试验

Objective:to observe the clinical effect of acupuncture by mángzhen huid(relaxing needling with sharp long needle) on iliotibial band friction syndrome(ITBS).Design:this was a two-arm randomized controlled trial with blinding of participants,outcome assessment and statistician.Setting:acupuncture-Moxibustion,Tuina and Orthopedics Department and the Orthopedics Department of Shanghai the Sixth People’s Hospital,June 2018 to January 2021.Participants:a total of 64 patients with iliotibial band friction syndrome(ITBS).Interventions:with a 1:1 ratio the patients were randomly assigned to either the conventional acupuncture group(CA,n=32) or the Relaxing Needling with Sharp Long Needle group(RNSLN,n=32).The CA group was treated by applying acupuncture at Jūliáo(居髎GB 29),Fēngshì(风市GB 31),Liángqiū(梁丘ST34),Yánglingquán(阳陵泉GB 34),and Ashi points(阿是穴)of the affected side,and the RNSLN group was treated by applying relaxing needling with sharp long needle at GB 29,ST 34,and Ashi points of the affected side.Both groups were treated once every other day,10 times as one course of treatment.Outcome measures:the treatment effect was evaluated after one course of treatment by comparing their KSS scores and VAS scores,as well as overall response rate.Results:Sixty-four patients were included in the final data analysis.There was no difference in KSS and VAS scores between the two groups before treatment(P>0.05).After treatment,the KSS score of the two groups was higher than that before treatment,the VAS score of the two groups was lower than that before treatment(P<0.05).The KSS score of the RNSLN group was higher than that of the CA group,and the VAS score of the RNSLN group was lower than that of the CA group(P<0.05).The overall response rate of the RNSLN group was 93.75%,higher than 75% of the control group(P<0.05).Each group has 1case of subcutaneous bleeding as adverse event.Conclusion:Relaxing Needling with Sharp Long Needle could be more beneficial for iliotibial band friction syndrome(ITBS) compared with conventional acupuncture,and more evidence is required for its effectiveness before introducing the approach widely to clinical practice.