A female patient with a dark red mass in the of preauricular area for over 3 months was hospitalized. Enhanced CT scan and ultrasonography showed that the mass had clear boundaries and was rich in blood supply. The patient was misdiagnosed as preauricular hemangioma, then the mass was removed as a benign tumor and found irrelevant to parot, SMA(+), Vim(+), S-100(+), indicating myoepithelial carcinoma. So a radical excision was performed to get negative incised margin. The patient didn't undergo postoperative chemotherapy but demonstrated no evidence of recurrence over a 12-month follow-up.
Adult ; Ear Neoplasms ; Female ; Follow-Up Studies ; Humans ; Myoepithelioma

Objective To study the therapeutic effect of pingyangmycin local injection under suspension microlaryngoscopy for treatment of laryngopharyngeal and laryngeal hemangioma. Methods The total of 44 cases of patients with laryngopharyngeal or laryngeal hemangioma were randomly divided into the experimental group ( n=22 ) and the control group (n=22). They were treated with bleomycin 5 mg or pingyangmycin 4-8 mg injection under suspension microlaryngoscopy in the hemangioma, respectively. If the treatments were not curative, repeated one more times in intermittent 15 d, but not more than 3 times. Therapeutic effect and adverse effect were recorded and analyzed. Results The total effective rate (95. 4%)in the experimental group was significantly better than that (59. 1%) in the control group (P<0. 05),and side reaction in two groups showed no significant variation. Conclusion Pingyangmycin local injection for treating laryngopharyngeal and laryngeal hemangioma is effective, less adverse reaction.

Objective To investigate the relationship of uteroglobin gene polymorphism to the sus-ceptibility to, clinical type and pathological type of Henoch-Schsnlein purpura (HSP) and Henoch-Schonlein purpura nephritis (HSPN). Methods Totally, 118 patients with clinically diagnosed HSP, including 80 cases of HSPN and 38 cases without renal involvement were recruited in this study together with 100 normal human healthy controls. Genomic DNA was isolated from peripheral blood leucocytes of all subjects. The uteroglobin G38A polymorphism was determined by PCR-restriction fragment length polymorphism (RFLP). Results The frequencies of genotypes 38GG, 38GA and 38AA in normal human controls did not differ from those in patients with HSP, patients with HSP but without nephritis, patients with HSPN, patients with HSP and joint involvement, patients with HSP and gastrointestinal involvement (all P > 0.05). Also, no sig-nificant difference was observed between patients with HSPN and patients with HSP but without nephritis (P > 0.05). Furthermore, the frequency of genotypes 38GG, 38GA and 38AA had no significant correlation to the clinical phenotype of HSP, the occurrence of gross hematuria and nephrotie syndrome or the degree of renal damage (all P > 0.05). A significant increase was observed in the frequency of genotype 38AA in patients with HSP with elevated serum IgE compared with those with normal serum lgE (58.82% vs 8.43%, χ2 = 21.946, P < 0.05, OR = 15.51, 95% CI range: 4.93% - 48.84%), whereas the frequency of genotype 38GG was significantly increased in patients with HSPN and hypertension than in those with HSPN but without hypertension (75.68% vs 18.60%, χ2 = 26.172, P < 0.05, OR = 13.61, 95% CI range: 5.01% -37.01%). Conclusions The uteroglobin G38A polymorphism seems unrelated to the susceptibility to and degree of renal damage in patients with HSP and HSPN. The genotype 38AA may be associated with elevated level of serum IgE In patients with HSP, while genotype 38GG is associated with a high incidence of hyper-tension in patients with HSPN.

Objective To investigate the feasibility and plan quality of the image-guided volumetric modulated arc therapy (VMAT) based voluntary deep exhale breath-holding technique in the stereotactic ablative body radiotherapy (SABR) for liver tumors.Methods Fifteen patients with liver tumors were involved in this study.All patients were immobilized with voluntary deep exhale breath hold (vDEBH) combined with real-time position management (RPM) respiratory gating system.Treatment was planned using VMAT with 2 modified partial arc and re-planned using intensity modulated radiation therapy (IMRT) technique for comparison.Dosimetric parameters were calculated for plan quality assessment.Quality assurance studies included absolute dose and multiple planar dose verifications,total monitor units and delivery time analysis.Daily cone beam computed tomography imaging was used to verify the motions.Results There were no significant dosimetric differences between VMAT and conventional IMRT plans (P ＞0.05).Both techniques were able to minimize doses to organs at risk including normal liver,kidneys,spinal cord,and stomach.However,the average monitor units with VMAT were significantly lower 28.1％ than those with IMRT(t =3.064,P ＜0.05).The average beam-on time in VMAT plans was 31.6％ shorter than that in IMRT plans(t =2.278,P ＜ 0.05).Conclusions The utilization of VMAT in the treatment planning of SABR for liver tumors under breath control mode has better dosimetrics.In comparison to conventional IMRT plans,VMAT plans have higher efficiency and feasibility.

Objective To study the effect of hyperbaric oxygen on cognitive dysfunction in patients with leukoaraiosis (LA). Methods 48 cases of moderate or severe LA with cognitive dysfunction were divided into 2 groups: the experimental group accepted hyperbaric oxygen (HBO) besides routine therapy, while the control group accepted routine therapy only. Both groups were assessed with Montreal cognition assessment (MoCA). Results The scores of MoCA in patients in the experimental group improved after treatment（P<0.05）, and was more than that of the control group（P<0.05）. Conclusion HBO can improve the cognitive function in patients with LA.

Objective To explore the characteristics of cognitive function in patients with leukoaraiosis(LA)at different extent.Methods The cognitive function of 66 patients with different extent of LA and 49 healthy controls were measured using the MoCA scale,and the relationship between the cognitive function and the extent of LA was evaluated.Results The LA was more severe,the cognitive function of patients was more poor.The cognitive function of patients with type Ⅳ LA significantly decreased than the patients with type Ⅰ LA and the controls,especially in the language,memory,visuoconstructional and executive functions(P<0.05).While the function of naming,attention,abstraction and orientation showed no significant difference between the patients with LA and the controls(P>0.05).Conclusion Moderate and severe LA may cause impairment of cognitive function.

OBJECTIVE: To evaluate the position and shape of inserted electrode arrays by plain X-ray during cochlear implantation. METHOD: Cochlear view of implanted electrode arrays by plain X-ray were observed during operation in 54 patients received cochlear implant. RESULT: The image in cochlear view could provide the information about position and shape of inserted electrode arrays. The spiral-shape electrode arrays without distortion and folding were found in 52 cases. The complete insertion of intracochlear electrode in these patients were confirmed by surgery. Of 54 cases, the other 2 cases showed improper position and C-shape of intracochlear electrodes, one was partial insertion and the other was bending inside the cochlea. The bending electrode array was reinserted immediately during operation. CONCLUSION Routine plain X-ray after inserted electrode during operation was a best way of knowing the shape and depth of the electrode array, especial for the difficult cochlear implantation, and also could avoided anesthetization again.
Adolescent ; Child ; Child, Preschool ; Cochlea ; diagnostic imaging ; Cochlear Implantation ; methods ; Cochlear Implants ; Electrodes, Implanted ; Female ; Humans ; Infant ; Male ; Radiography ; X-Rays ; Young Adult

Objective To analyze the radiation dose to contra-lateral breasts and estimate the incidence risk of contra-lateral breast cancer for women undergone unilateral breast cancer radiotherapy.Methods The radiation doses of contra-lateral breasts for 49 patients were counted and analyzed in a hospital,and the risk of contra-lateral breast cancer in different age groups that induced by radiotherapy was estimated based on BEIR Ⅶ model combined with the Chinese lifetime table.Results The prescribed doses for the patients were all 50 Gy.The mean dose to contra-lateral breasts ranged from 0.14 Gy to 3.59 Gy,with an average of (1.21 ±0.89) Gy,and the maximum point dose varied from 0.98 Gy to 45.27 Gy,with the average of (17.42 ±13.20) Gy.Both the maximum point dose and the mean dose obviously varied among the patients,and their correlation was significant (R =0.527,P =0.000).Furthermore,no significant differences of the mean dose was found among the ages (P ＞ 0.05).The lifetime attribute risks of contra-lateral breast cancer were estimated to be 2 449,1 857,994,446,173 and 55 for per 100 thousand women corresponding to the ages of 35,40,50,60,70 and 80,respectively.Conclusions In the radiotherapy for unilateral breast cancer,the dose delivered to the contra-lateral breast is about 1 Gy order of magnitude,the risk of contra-lateral breast cancer cannot be ignored for young women.Therefore,the irradiation dose of contra-lateral breasts should be controlled as less as possible in planning the treatment.

Objective To evaluate the effect of pretreatment with calcipotriol on protoporphyrin Ⅸ (PpIX) content in the normal epithelium of nude mice after topical application of aminolevulinic acid (ALA).Methods A total of 36 BALB/C nude mice were randomly and equally divided into 2 groups:calcipotriol + ALA group topically pretreated with calcipotriol ointment for 3 days followed by topical application of ALA,and ALA group topically treated with ALA alone.At 2,3,4,5,6 and 7 hours after ALA application,3 mice in each group were sacrificed separately,and skin tissues were obtained from the experimental region in the back of mice.A fluorospectrophotometer was used to detect the PpIX content in the normal epithelial tissue of the nude mice,and an inverted fluorescence phase-contrast microscope to observe the fluorescence intensity and distribution of PpIX in the frozen sections of epithelial tissues.Results During 2-8 hours after topical application of ALA,the content of PpIX in the skin tissues of nude mice in the two groups gradually increased over time.Correlation analysis revealed no correlations between the PpIX content in the ALA group and the treatment duration (r =0.451,P =0.369),while the PpIX content in the calcipotriol + ALA group was strongly correlated with the treatment duration (r =0.913,P =0.011).The PpIX content in the ALA group reached a peak at 5 hours [(461.24 ± 43.45) ng/g tissues],while the PpIX content in the calcipotriol + ALA group peaked at 6 hours [(668.88 ± 42.46) ng/g tissues].At 2,3,4,5,6 and 7 hours after ALA application,the PpIX content was significantly higher in the calcipotriol + ALA group than in the ALA group (P ＜ 0.05 or 0.01).Frozen-section examination showed that PpIX was diffusely distributed in the epidermis and dermis of the nude mice,and the fluorescence intensity of PpIX was higher in the calcipotriol + ALA group than in the ALA group at 5,6 and 7 hours after ALA application.Conclusion Pretreatment with calcipotriol can increase the content of PpIX in the normal epidermis and dermis of nude mice after topical application of ALA,which provides a theoretical basis for the clinical application of calcipotriol as a local synergist of ALA-PDT.

Objective To explore the dosimetric characteristics of single photon emission computed tomography(SPECT)combined with bone marrow sparing intensity modulated radiotherapy in patients with cervical cancer.Methods Twenty patients with cervical cancer after hysterectomy were performed on 99Tc thiocolloid SPECT bone marrow imaging to determine the active bone marrow in the pelvis.SPECT image combined with the simulation CT was used as the primary planning data set.Two plans for bone marrow sparing modulated radiotherapy were generated according to the bone marrow volume defined by SPECT and outline of the pelvis(SPECT-IMRT planning and BMS-IMRT planning).Furthermore,the target section and the dosimetric distribution in organs at risk(bone marrow,small intestine,rectum and bladder)in the two plannings were compared.The prescribed dose to the PTV was 45 Gy.Results The volume of the bone marrow in SPECT-IMRT planning and BMS-IMRT planning was(238.15 ±36.82)and(1 100.61 ±109.92)cm3,respectively(t＝33.273,P＜0.05).The average bone marrow volume of SPECT-IMRT planning in high-dose radiation region(V30,V40and V45)was decreased by 6.9％,5.7％and 2.6％respectively compared with BMS-IMRT planning(t ＝3.540,3.4261,3.448,P＜0.05),but there was no statistical significant difference between the two plannings in the dose volume of low-dose radiation(V10and V20,P＞0.05).The PTV coverage rate and exposure dose of other organs at risk(small intestine,rectum and bladder)in the two plannings were not significantly different(P＞0.05).Conclusions SPECT bone marrow imaging could clearly show the range of active bone marrow on CT scan images.Compared with BMS-IMRT,SPECT-IMRT could further reduce the dose volume of high-dose radiation(V30,V40and V45).Yet the clinical significance of this advantage also needs to be confirmed by large-scale clinical studies.