Purpose:To evaluate the different dose distribution created by three different plans on a nasopharyngeal carcinoma case with simultaneous integrated boost intensity modulated radiation therapy (SIB-IMRT). Methods:we designed three different SIB-IMRT plans on a nasopharyngeal carcinoma case, one was from anterior direction of the head, 5 non-equally spaced fields, another was from posterior direction of the head, 5 non-equally spaced fields also, third was 5 equally spaced fields around the head. Each plan had its dose distribution to the target and main critical structures.Results:No significant difference of dose distribution to the target when comparing the previous three different IMRT plans. However, dose to the parotids delivered from 5-equally spacd was obviously lower than the other plans, dose to the optic chiasm was much lower created by the plan designed from the posterior direction of the head with 5 non-equally spacea field.Conclusions:For a nasopharyngeal carcinoma case, there is no significant difference of dose distribution to the target compared with three different 5-beam orientation SIB-IMRT plans. To protect parotids, we recommend designing a plan with equal beam direction around the head. When the target is very close to the optic chiasm, plauning from posterior direction of the head should be better.

Objective: To investigate the effect of Sirolimus on vein graft neointima hyperplasia via oral administration compared with local delivery, and find out an effective and safe way to provide support for clinical application. Methods: A rabbit external jugular vein-to-common carotid artery model was established. Twenty-four healthy rabbits were divided into 4 groups at random: blank-control group, F-127 control group, group 3 that received locally applied slow-releasing Sirolimus with F-127, group 4 that received oral Sirolimus (the commercial name Rapamune). The ratio of intima to medium thickness and re-stenosis rate (ratio of lumina to lumina plus intima area) were measured, PCNA positive cells by immunohistochemical staining were detected to indicate the degree of cell proliferation, and apoptosis cells detected by TUNEL. Results: Compared with blank-control group, neointima hyperplasia was inhibited significantly in group 3 and group 4 intima thickness were (90.11?10.99)?m versus (29.38?10.45) ?m, (18.29?9.03)?m, respectively. Re-stenosis rate was reduced (lumina area/ total area ratio were 0. 58?0.11 versus 0.80?0.16, 0.77?0.16, respectively). Proliferation of VSMC was inhibited (cell proliferation indexes were 31.03%?6.80% versus 20.32%?9.19%, 16.22%?5.85%, respectively) and cell apoptosis level raised (cell apoptosis indexes were 16.27%?6.49% versus 33.39%? 7.05%, 33.42%?7.11%, respectively). There was no significant difference between group 3 and group 4. Conclusion: Both locally applied slow-releasing Sirolimus and oral Rapamune could inhibit vein graft neointima hyperplasia; Administration via local delivery was preferred for little side-effect on the whole body. This conclusion provides support for clinical application.

Adult ; Female ; Hemoperfusion ; Humans ; Male ; Neurotoxicity Syndromes ; etiology ; therapy ; Organophosphate Poisoning ; Pesticides ; poisoning ; Retrospective Studies ; Treatment Outcome

Adult ; Chromium Alloys ; adverse effects ; Crowns ; adverse effects ; Female ; Foreign Bodies ; etiology ; Foreign-Body Reaction ; Gingiva ; surgery ; Gingival Hyperplasia ; etiology ; surgery ; Gingivectomy ; Humans ; Metal Ceramic Alloys ; adverse effects

Objective To discuss the advance and experience of postoperative management in multivisceral transplantation(MVT).Methods Five patients with abdominal multiple organs malig- nances were subjected to multivisceral transplantation.The excised specimens included the liver,pan- creas,duodenum,stomach,spleen,mesentery and all of the involved lymph nodes.The transplanted organs were liver,pancreas,duodenum and parts of intestine.Patients were monitored and sustained stably in breath,hemodynamics and homoeostasis.The coagulation was also monitored and kept in balance.The intensive immunosuppressive protocol,including steroid,tacrolimus,mycophenolate mofetil and Zenapax,was used to prevent the acute rejection.The endocrine and exocrine of pancreas were tested,color Doppler examination was done every day,and Somatostatin was used to prevent pancreatitis.Drugs to bacteria,fungus and virus infection were prophylactically used.Results All patients waked up with 4-6 h after operation and began recovering with 3-7 days.Dynamic examina- tions revealed that the functions of grafted liver,pancreas and duodenum were satisfactory.No com- plications of acute rejection,pancreatitis,bleeding and thrombosis occurred.Conclusion Many ques- tions in postoperative management related to multivisceral transplantation are devoted to study.Nice experience of management to organ transplantation,detailed monitoring and prophylactically medica- tions are safeguards to steady recovering and further prognosis.

Adolescent ; Bone Marrow Transplantation ; Child ; Child, Preschool ; Female ; Humans ; Infant ; Male ; Thalassemia ; surgery ; Transplantation Chimera

Background and Purpose:It has been proved that CD117 may be used as an immunology marker for diagnosis of leukemia of myeloid origin.The relationship between CD117 expression and effect of chemotherapy on the patients with Acute Nonlymphoblastic Leukemia(ANLL) remains unclear.This study is to investigate the relationship between CD117 expression and the response of patients with ANLL to chemotherapy.Methods:Flow cytometery(FCM) was used to detect the positive rate and the levels of CD117 expression of the bone marrow mononuclear cell(BMMNC) from 38 patients with acute lymphoblastic leukemia(ALL) and 81 patients with ANLL,respectively.All-trans Retinoic Acid(ATRA) was taken to treat M_(3) type of ANLL and protocol DA and/or HA was used to treat the other types.ANLL was divided into two groups: positive(+) and negative(-) expression of CD117.At the same time we compared the difference of rates of complete remission(CR) between CD117(+) and CD117(-) groups from ANLL after chemotherapy.Results:Positive percentage of expression of CD117 in ALL and ANLL groups were 13% and 70% respectively(P=0.000).Positive levels of CD117 decreased successively as follows: M_(3)/ M_(1)、M_(2)/ M_(6) / M_(4)、M_(5).CR rates of CD117(+) and CD117(-) groups of ANLL after chemotherapy were 51%(29/57) and 67%(16/24)(P=0.192),respectively.Conclusions:CD117 may serve as an immunology marker for the diagnosis of ANLL,but positive or negative expression of CD117 in ANLL was not associated with the response of the patients with ANLL to chemotherapy.

Objective:To study expressions of CD117 and CD34 in the patients with acute promyelocytic leukemia(APL,M3) and in M1-M2 subtype from FAB classification for acute leukemia(AL).The focus of the study would be laid on the clinical significance of CD117/CD34 co-expression in the patients of M3 subtype.Methods:Researched cases of acute nonlymphoblastic leukemia(ANLL) were divided into two groups:M1-M2 subtype and M3 subtype.Flow cytometery(FCM) was used to detect the rates of positive expression of CD117 and CD34 on bone marrow mononuclear cell(BMMNC) in 54 patients of M3 and 63 patients of M1-M2 subtype respectively.Meanwhile,we compared the differences between the rates of expression of CD117 and CD 34.And,the rates of CD117/CD34 co-expression in patients of M1-M2 subtype and M3 subtype were studied.Results:Our results revealed that the positive rates of CD117 expression in M1-M2 subtype and M3 subtype were 71.4%(45/63) and 66.7%(36/54) respectively(P=0.58).The positive rates of CD34 expression in M1-M2 subtype and M3 subtype were 66.7%(42/63) and 11.1%(6/54) respectively(P=0.000).The positive rates of CD117/CD34 co-expression in M1-M2 subtype and M3 subtype were 71.1%(45/63) and 7.4%(4/54) respectively(P=0.000).Conclusion:CD117 may be used as immunology marker for leukemia of myeloid origin.CD34 had lower expression in M3 subtype than in M1-M2 subtype.The positive rate of CD117/CD34 co-expression in M3 subtype was significantly lower than that in M1-M2 subtype,which can help for diagnosis of M3 subtype and help differentiate M3 subtype from M1-M2 subtype as well.

Purpose To explore the multislice spiral CT (MSCT) features of renal chromophobe carcinoma, and to improve the understanding and diagnosis of the disease. Materials and Methods MSCT features of 17 patients with renal chromophobe carcinoma confirmed by surgical pathology were retrospectively analyzed, plain MSCT and multi-phase dynamic contrast-enhanced scan were applied to these patients. Results Single substantive round or oval-shaped soft tissue mass was demonstrated in 17 cases. The lesions were all uniform density on plain MSCT, and mild to moderate homogeneous enhancement in 11 cases on enhanced MSCT, including 9 cases with significant enhancement above the renal medulla and below the renal cortex, and 2 cases with similar enhancement to renal medulla in corticomedullary phase. On nephrographic phase the lesion showed significant lower density than renal medulla. Heterogeneous enhancement presented in 6 cased, including 1 case with small necrosis and 1 case with stellate scar lesion in low-density. Conclusion Renal chromophobe carcinoma demonstrates a round solid mass of uniform density on plain MSCT, and mild to moderate homogeneous and heterogeneous, which can provide the reference value for preoperative diagnosis.

0.05). Regarding to the grade of irradiation mucositis, the majority of patients in the treatment group were at stage Ⅰ-Ⅱ,while those in the control at stage Ⅲ-Ⅳ(P0.05).No adverse drug reaction was observed in both groups during irradiation process.Conclusion:Actovegin can postpone the development of irradiation oropharyngeal mucositis and decrease the incidence of gradeⅢ and Ⅳmucositis.