ObjectiveTo evaluate characteristic imaging findings of tumor attenuation in 4-phase CT between renal oncocytoma ( RO ) and clear-cell renal ceil carcinoma ( ccRCC ) of small tumor size (≤Scm).Methods Fifty-six patients with histologically confirmed renal masses (11ROs and 45 ccRCCs) were included in this study.Heterogeneous enhancement was found all tumors during the corticomedullary phase (CMP).The CT values of the normal renal cortex,the relatively high enhanced region and the relatively less-enhanced region of the tumor were measured in each phase.Statistical comparison was carried out by Chi-square test or Mann-Whitney test.ResultsIn CMP,the CT value of the relatively high enhanced region in RO [ 163.0 HU ( 141.0—178.0 HU) ] was significantly lower than that in ccRCC [ 194.0 HU ( 166.5—235.0 HU) ; Z = -2.847,P =0.004].Compared CMP with the excretory phase,the attenuation of the relatively highly enhanced region in RO [70.0 HU (41.0—86.0 HU)] were significantly lower than that in ccRCC [87.0 HU (65.0—126.5 HU) ] (Z= -2.032,P =0.042).In the excretory phase,9 of 11 ROs had a further enhancement with its relatively less-enhanced region which was significantly higher than that in ccRCC (21/45 ; x2 = 4.391,P = 0.036).ConclusionsIn CMP,the CT value of the relatively high enhanced region in RO was significantly lower than that in ccRCC.Compared with ccRCC,in the excretory phase,the RO had less attenuation of the relatively highly enhanced region with homogeneous density.

No abstract available.
Female ; Mammaplasty*

Objective To evaluate the right ventricular function using volumetric pulmonary artery catheter (VPAC) in patients undergoing off-pump coronary artery bypass grafting (CABG) .Methods Thirty-two patients (18 males, 14 females) aged 45-63 yrs weighing 58-74 kg undergoing CABG were studied. Their cardiac functions were graded according to NYHA classification as Ⅰ or Ⅱ. Radial artery was cannulated before induction of anesthesia for BP monitoring. Anesthesia was induced with midazolam 0.03-0.05 mg?kg-1, fentanyl 10-15 ?g?kg-1 and pipecuronium 0.1-0.15 mg?kg-1 and maintained with 1.0-1.5% isoflurane. The probe (7 MHz) of the transesophageal echocardiography (TEE, Sonos 2500, HP) was placed in esophagus after tracheal intubation for measurement of both right and left ventricular end-diastolic, end-systolic volume and ejection fraction (LVEDV, LVESV, LVEF, RVEDV, RVESV, RVEF). VPAC (type 774HF75, Edwards Life Science Co) was placed via right internal jugular vein for measurement of RVEDV, RVESV and RVEF. 6% HAES 10 ml?kg-1 was infused over 10 min. The cardiovascular parameters mentioned above were measured before and immediately after 6% HAES infusion using both TEE and VPAC, and compared.Results The RVEDV and RVESV (measured by TEE and VPAC) and LVEDV, LVESV (by TEE) were significantly increased after HAES infusion as compared with the baseline values (P

Objective:To explore the change of the behaviour, cognition and emotion of the public in Beijing during different prevalence of SARS Method: "Questionnaire on SARS" was designed by authors Through e-mails or websites, 473 valid copies were collected in Beijing Result:Facing with SARS, the public in Beijing faced high pressure from the environment They concerned with the information on SARS very much, and adopted more self-protection behaviours, such as wearing masks, paying more attention on personal hygiene Some people also showed irrational behaviours, such as storing cashes and food, taking the temperature too much times within one day and so on As for the cognition, people thought they should adjust themselves psychologically in order to overcome SARS related problems without being panic When the SARS cases increasing, physical and psychological stricture made people feel more nervous, panic, helpless, angry and pessimistic, as well as less excited, calm and numb The cognition, behaviour and the emotion of Beijing's public varied along with the situation in Beijing and in China

0.05);After one month,thrombus could not be seen in the ovaries of all four groups.No injury could be seen in all kinds of cells in the four groups. Conclusion:Rabbit ovarian angiogenesis was not affected by low power ultrasound.

ObjectiveTo study the expression of three protein kinase C subforms in renal cell carcinoma.MethodsThe expression of cPKC?,cPKC? Ⅱ and aPKC? in renal cell carcinoma were detected by immunohistochemical method(S-P method) and by in situ hybridization.ResultsPositive rate of cPKC? ?cPKC? Ⅱ and aPKC? was 68.4%,34.2% and 44.7% respectively in renal cell carcinoma.Positive rate of cPKC? in stage T 2～T 4 tumors was 80.9%(17/21) and 52.9%(9/17) in T 1(P 0.05).The positive expression of cPKC? in deadly cases was significantly higher than in survivers (P

The curative effect on 124 cases with multi drug resistant pulmonary tuberculosis from January 1996 to June 1999 was reported.All the cases, with an average history of 5.84 years, were recurrent ones. They included 78 cases of infultative pulmonary tuberculosis,46 cases of chronic fibrocavitative pulmonary tuberculosis. Sputum of all the cases was cultured for Mycobacterium hominis tuberculosis with Kuang`s culture medium and drug susceptibility test was done. As a result, the drug resistant rate to 2 drugs, 3 drugs,4 drugs, 5 drugs and more were 20.16%,25.0%,20.9%,33.72% respectively.The authors added 1～2 kinds of anti TB drugs never used before in each case to KOP (Kanamycin, Ofloxacin, Sodium Aminosalicylate),with a mean 3.3 months treating course. The sputum negative conversion rate was 66.9%,foci absorption rate was 72.6%, cavity close up 50.0% . There wasn′t any serious adverse effect encounted. It suggest that KOP synergetic bacteriocidal to Mycobacterium tuberculosis either inside or outside cells, with fewer side effect, is a good regimen for multi drug tuberculosis treatment.

In order to study the curative effects of L arginine (L Arg) on high altitude pulmonary edema (HAPE),we had treated 10 patients with HAPE by intravenous L Arg at 3700m, and the result was compared with 11 patients who inhaled low concentration nitric oxide (NO) and 24 subjects with routine treatment.The findings were as follows:compared with the routine group, inhaling NO or intravenous L Arg could hasten the disappearance of moist rales and X ray shadow, and shorten the illness time( P 0.05). It suggested that intravenous L Arg is a handy way to treat HAPE, and there is no toxicity. It is worthy of further trial.

To study the surgical management of primary hyperparathyroidism, we analysed 30 patients with primary hyperparathyroidism operated in our hospital from 1981 to 1990. A low collar transverse incision was done in all patients. A single parathyroid adenoma was found in 28 patients,and in 3 cases there were ectopic glands (1 in the mediastinum 2 intrathyroid). The adenoma was removed in all patients.In 1 case there was parathyroid hyperplasia, but only one gland was involved and it was excised. 1 case was diagnosed as parathyroid carcinoma which was located in the tracheo esophageal groove and had invaded the trachea and esophagus. An en bloc resection and tracheostomy were performed. 25 cases were followed up(including 1 case with parathyroid hyperplasia and 1 case with carcinoma) from 8 months to 19 years, there was no recurrence.These results suggest surgical management is the most effective treatment for primary hyperparathyroidism. Removal of the parathyroidoma and unilateral cervical exploration are adequate for the patients with parathyroid adenoma. Bilateral exploration is necessary when parathyroid hyperplasia is found. An en bloc resection is necessary for parathyroid carcinoma.

To observe the regulative effect of electroacupuncture(EA) on plasma levels of some brain gut peptides in dogs, contents of gastric secretin(GT), vasoactive intestinal peptide(VIP), somatostatin(SS) and endothelin(ET) in plasma were simultaneously measured by radioactive immunonassay method in the dogs with or without EA stimulation at different acupoints. The results showed that in the Zusanli(st 36) group, after EA stimulation, an increase was observed in plasma contents of GT and VIP( P