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Biomedical subjects

C Veyret

Publications and source records attributed to C Veyret.

At least 37 records · Page 2Linked to original sources
PubMed1993

[Reversal of portal blood flow in cirrhosis. Clinical, endoscopic and ultrasound endoscopic correlations in 72 patients].

From January to December 1991, the portal venous system was evaluated by Doppler ultrasonography in 72 patients with liver cirrhosis. The objectives of this study were to evaluate the prevalence of spontaneous reversal of blood flow in the portal vein and to assess the relationship between Doppler ultrasound investigation and clinical, biochemical, endoscopic (70 patients), and endosonographic (44 patients) features. Reversed flow was quite frequent (alternating: 17%, permanent: 22%) and its prevalence did not differ in relation to age, sex, serum gammaglobulin concentration and Child-Pugh class. In patients with reversed portal venous flow, the prevalence of hepatic encephalopathy was higher (39% vs 13.5%, P < 0.05), but the prevalence of esophageal or gastric varices was not related to that pattern. Endosonography detected gastric wall abnormalities in a higher proportion of patients with reversed portal flow than in patients without it (P < 0.05). This study suggests that reversal of flow in the portal vein could play a role in the development of the gastric wall abnormalities in liver cirrhosis, which are detected by endosonography but not by endoscopy.

Adult↗
PubMed1992

[Anatomical limits of endonasal ethmoidectomy].

Constant anatomic boundaries of the lateral mass of the ethnoid are described, based on data from microdissections, endoscopic examinations, computed tomography imaging and histology in 12 subjects. As with surgical progression, identification of these boundaries follows the lateral orbital and superior craniofrontal surfaces. The "starred groove formation", ethmoidal roof lamina and ethmoidosphenoidal recesses are the safety beacons for endonasal ethmoidectomy under endoscopic control.

Endoscopy↗
PubMed1992

[A case of congenital pulmonary varices].

Pulmonary varices are rare disorders (only 72 published cases), and are most often congenital in origin, asymptomatic and have a benign outcome. In some cases the appearance of varices is favoured by pulmonary venous hypertension which is most often related to mitral valve disease, or it is associated with other vascular or bronchial malformations. We present a new case of isolated pulmonary varices occurring in an asymptomatic young woman aged 20. The pulmonary radiological abnormality was confirmed using computed tomography which showed that the abnormality was both of vascular origin and of venous composition. Digital subtraction angiography during the venous phased confirmed the diagnosis. There was no associated cardiomyopathy, nor any bronchial or vascular malformation. No surgical intervention was taken, nor was there any clinical or radiological change observed during follow-up over one year. The diagnosis of pulmonary varices is an important one to make, particularly to avoid an unnecessary thoracotomy, but there should always be a systemic search for associated anomalies.

Adult↗
PubMed1990

Assessment of estrogenic recruitment before chemotherapy in advanced breast cancer: preliminary results of a double-blind randomized study of the EORTC Breast Cancer Cooperative Group.

We investigated whether estrogenic recruitment could enhance the antitumor effect of chemotherapy in 165 patients with advanced breast cancer, presumably sensitive to hormonal treatments (ER + and/or PgR + lesions). The therapeutic regimen consisted of: (a) estrogenic suppression by aminoglutethimide 1 g/day + hydrocortisone 40 mg/day; surgical castration in premenopausal patients only; (b) FAC (5FU 500 mg/m2; ADM 50 mg/m2; CPA 500 mg/m2) for 3 weeks; (c) following randomization, exactly 24 h prior to chemotherapy, patients had to take 1 tablet of either placebo (PL) or 50 microgram ethinylestradiol (EE2). Tolerance, responses, time to progression and median survival were identical in both groups. Thus, EE2 before chemotherapy did not contribute to the efficacy of this particular therapeutic regimen, which yielded an overall response rate of 64%. We conclude that the validity of the hormonal recruitment concept has not yet been established in clinical practice, so that this approach remains experimental.

Aminoglutethimide↗
PubMed1990

[Comparative study of the data of fine-needle aspiration biopsy and echographic aspects of hepatic tumors as a function of the circumstances of discovery. Apropos of 206 patients].

This study was carried out in order to compare the accuracy of ultrasound and ultrasonically guided fine-needle aspiration biopsy in screening for tumoral hepatic syndrome in 206 patients. According to their different clinical presentations, patients were divided into 4 groups: 1: Documented cancer, 2: Hepatic cirrhosis, 3: Fortuitous ultrasonic detection, 4: Clinical hepatic tumor. Cytologic findings were divided into 4 types: benign, primary malignant tumor, secondary malignant tumor (with or without etiologic orientation) non significant result. The ultrasonic and cytologic results were retrospectively compared to definitive diagnosis which was known in 199 patients. No early or delayed complications related to fine-needle aspiration biopsy were recorded. Ultrasonic imaging globally suggested the final diagnosis in 116 patients (diagnostic precision: 58.2 percent) while the cytologic result corresponded to final diagnosis in 183 patients (diagnostic precision: 92.5 percent). Improved results by fine-needle aspiration biopsy with regard to ultrasound was recorded in each group, particularly in group 3; its diagnostic sensitivity was 92 percent for malignant lesions with 100 percent specificity and an excellent value in discriminating between their primitive or secondary nature. Fine-needle aspiration biopsy gave an exact etiologic orientation in half of cases with metastasis and helped to discover the primitive tumor in some patients when this was not known previously. We conclude that fine-needle aspiration biopsy is a simple, moderately invasive and accurate procedure in the diagnosis of hepatic lesions. As ultrasound alone is not suggestive, especially in the case of a fortuitous ultrasonic detection, fine-needle aspiration biopsy improves diagnostic precision.(ABSTRACT TRUNCATED AT 250 WORDS)

Adult↗
PubMed1989

[Value of ultrasound-guided cytopuncture in the diagnosis of hepatocellular carcinoma].

Ultrasonically guided fine needle aspiration biopsy cytologies (external diameter inferior to 1 mm) were carried out in 28 patients with proved hepatocellular carcinoma. In all cases, the diagnosis of malignant involvement of the liver was firmly established by cytological examination. A correct diagnosis of hepatocellular carcinoma was made in 26 of 28 patients (sensitivity = 93%). The specificity of the procedure was 100%. No complications were observed. The present study shows that fine needle aspiration biopsy under ultrasound guidance is a safe and accurate diagnostic procedure in hepatocellular carcinoma even associated with cirrhosis.

Aged↗
PubMed1989

[Macroangiopathy of a kidney graft caused by cyclosporin A].

We report a case of renal macroangiopathy occurring after transplantation in a 50-year-old woman who received a cadaveric kidney and who was immunosuppressed with cyclosporin A. Accelerated hypertension at 3 months led to renal angiography which revealed diffuse narrowing of the two main renal arteries and their intrarenal branches. The patient returned to regular haemodialysis four months post-transplantation. These angiographic cyclosporin A-ascribed findings are similar to those recently reported by Sawaya.

Cyclosporins↗
PubMed1988

[Echographic detection of hepatocellular carcinoma in patients hospitalized for cirrhosis].

This study was carried out in order to assess the accuracy of ultrasound in a) screening for hepatocellular carcinoma in patients hospitalized for cirrhosis and b) determining the possibility of hepatic resection. From January 1983 to January 1987, 492 patients with cirrhosis were investigated for hepatocellular carcinoma using clinical examination, serum alphafetoprotein measurement and ultrasound study. Four hundred and thirty-seven patients had alcohol-related cirrhosis (88.8 p. 100); ascites was found in 280 cases (56.9 p.100). Ultrasonography-guided aspiration cytology was performed whenever a tumor was found. Four hundred and nineteen patients underwent ultrasonography and alpha-fetoprotein chemistry. The diagnosis of hepatocellular carcinoma was confirmed in 66 of 419 patients (15.8 p. 100). Sixty of the 88 patients diagnosed as having tumor on ultrasound were found to have hepatocellular carcinoma. In 6 out of 66 patients (9.1 p. 100), the tumor was not identified by ultrasonography but the level of alphafetoprotein was high (greater than 1,000 ng/ml). Sixteen cancers (24.2 p. 100) were diagnosed by ultrasonography only. All patients were men with alcohol-related cirrhosis, their ages ranging from 52 to 82 years. The results of ultrasound investigation were: 8 solitary tumors, 5 multicentric tumors, 3 diffuse tumors. Only 2 of the 16 tumors were resectable. We conclude that ultrasound is an accurate procedure in the diagnosis of hepatocellular carcinoma associated with cirrhosis. However, in hospitalized patients, the value of screening for hepatocarcinoma is small because liver resection is often impossible due to the wide spread tumor involvement or advanced liver cirrhosis at the time of diagnosis. On the other hand, screening should be performed in patients with compensated cirrhosis.

Adult↗
PubMed1987

Inflammatory breast cancer. Determination of prognostic factors by univariate and multivariate analysis.

Between January 1977 and June 1983, 64 consecutive patients were treated for unilateral inflammatory nonmetastatic breast cancer. Our protocol included three or four courses of induction chemotherapy, then locoregional irradiation therapy with Co-60, followed by maintenance chemotherapy only if induction chemotherapy had proven effective. Eight patients with a residual tumor after radiotherapy underwent a modified radical mastectomy. Actuarial 3-year overall survival for the whole group was 38%, and the median disease-free survival time was 19 months. The effect of 17 factors on overall survival or disease-free survival was analyzed. With univariate analysis, eight factors were found to affect overall survival or disease-free survival: extent of initial erythema, size of initial edema, lymph node involvement, erythema present at the end of initial chemotherapy, erythema present at the end of radiotherapy, tumor size at the end of induction chemotherapy, residual breast tumor at the end of maintenance chemotherapy, and performance of a radical mastectomy. Age at diagnosis, menopausal status, type of chemotherapy, and date of appearance of inflammatory signs did not influence prognosis. Multivariate analysis using the Cox proportional hazard model isolated three bad prognosis factors: erythema involving the whole breast at initial diagnosis, erythema present at the end of initial chemotherapy, and lymph node involvement.

Actuarial Analysis↗
PubMed1986

Adjuvant tamoxifen in postmenopausal breast cancer: preliminary results of a randomized trial.

Between May 1978 and March 1982, 179 postmenopausal women with operable breast cancer were randomized to receive either adjuvant tamoxifen, 40 mg daily for three years (TAM group), or no further treatment (controls). The difference in five-year survival rates (61% in the control group, 72% in the TAM group) was not statistically significant. However, there was a significant improvement in disease-free survival in the TAM group (61%) relative to the controls (44%) (p = 0.008). In estrogen receptor positive patients, tamoxifen improved both the disease-free rate (47% controls, 80% with tamoxifen) and the survival rate (63% to 83%). Similar results were observed in progesterone receptor positive patients. In patients that were estrogen receptor negative, tamoxifen modified neither the survival rate nor the disease-free interval.

Breast Neoplasms↗
PubMed1986

[Rapidly growing breast cancer: results of a retrospective analysis with a study of prognostic factors].

Between January 1977 and December 1982, 66 consecutive patients have been treated for unilateral, rapidly progressing, non metastatic breast cancer. They were divided into three groups: Group A (n = 10): tumor whom volume had increased during the 2 months before diagnosis; Group B (n = 30): inflammatory signs (erythema, skin oedema, elevated local temperature) involving less than one half of the breast; Group C (n = 26): inflammatory signs involving more than one half of the breast. All patients where managed similarly: 3 to 4 courses of chemotherapy (CMF: n = 24; AVCF: n = 42), then loco regional irradiation therapy with cobalt 60, followed by maintenance chemotherapy, only if the first chemotherapy had proved effective (CMF: n = 13; AVCF: n = 27). Nine patients with residual tumor after radiotherapy underwent mastectomy with axillary dissection. The actuarial 5 years survival for the whole group is 29%, and respectively 49%, 38% and 9% for the groups A, B and C. The median disease free intervals are 43, 29 and 12 months respectively. Fifteen prognostic factors likely to influence overall survival or disease free survival were evaluated. With univariate analysis, 8 factors were found to be of individual prognostic value: extent of initial erythema, erythema present after initial chemotherapy, erythema present after radiotherapy, non menopaused status, tumor diameter greater than 10 cms, residual breast tumor (clinical or radiographic) after maintenance chemotherapy, supra clavicular adenopathy (N3). Age at the diagnosis, type of chemotherapy, or performance of a radical mastectomy did not influence the prognosis. Multivariate analysis using the Cox-model isolated 3 factors of bad prognosis: erythema involving the whole breast at initial diagnosis, erythema present at the end of initial chemotherapy, N3.

Adult↗
PubMed1981

[Progression and severity of arterial hypertension in aged subjects (12 cases].

We analyzed retrospectively 12 patients, aged from 63 to 73 years, with renovascular hypertension due to unilateral or bilateral atheromatous lesions (4 out of 12). Malignant or accelerated hypertension with multiple visceral involvement was frequent (8 out of 12). The proximal lesions (stenosis) of the renal arteries were rapidly progressive, leading to complete thrombosis in 8 cases. Five patients received medical treatment only, but 2 worsened their GFR and 2 had a poor blood pressure control. Of the 5 patients who underwent renal surgery 2 had nephrectomy, 2 had an aorto-renal bypass and 1 a bypass plus nephrectomy; 2 of them recovered a normal GFR, but 2 died in the post-operative period. Three patients had selective embolization of a renal artery, but only one was definitely improved. So far, the treatment of such cases still is very difficult.

Aged↗
PubMed1979

[Sarcoma of the right superior pulmonary vein: physiopathological study of the progressive stenosis in a lobar vein (author's transl)].

A part from the interest aroused by the exceptional nature of this case of sarcoma of the right superior pulmonary vein, it enabled definition of the angiographic appearances of the affection of the vein. Physiopathological examinations, including vascular redistribution, development of a systemic collateral circulation, and the reflux of hematosed blood into the pulmonary trunk, were able to establish the diagnosis in vivo.

Collateral Circulation↗