Quistes del colédoco en adultos: Estudio de dos casos y revisión de la literatura / Chole dochal cysts in adults: study of two cases and literature review

La finalidad de este trabajo en la rareza de la entidad clínica y tratar de determinar la incidencia en nuestro principal centro hospitalario. Hasta el momento el total de la causistica en nuestro país no sobrepasa los 30 casos, y en una revisión que comprende 12 años (1980-1992) a nivel de nuestro centro (H.U.L.A) solo se reportaron dos casos. Presentamos dos casos de quistes del colédoco en dos adultos de sexo femenino con edades respectivas 20 y 22 años, portadoras de quistes del colédoco tipo I, las cuales mostraron la triada clásica de dolor en hipocondrio derecho, ictericia y masa intraabdominal, planteándose como tratamiento la exeresis de los quistes y hepaticoyeyunostomía en Y de Roux, observándose evolución satisfactoria

role of colored duplex sonography in detection of deep vein thrombosis of lower extremity

Color doppler U.S. imaging was used to evaluate 110 patients with suspected lower extremity venous thrombosis. They were complaining of pain, tenderness and swelling. Occlusive and non occlusive venous thrombi were detected in 52 patients [47 percent] either in external iliac, femoral, popliteal or leg veins. The veins lower limbs were examined by a combination of B-mode Duplex sonography with color flow mapping which can give very accurate information about patency of veins and their blood flow. It can visualize venous thrombi which are partially or totally occluding the venous lumen. Compressibility of the veins under pressure and augmentation of venous blood flow with muscle compression were very accurate signs about the patency of lower limb veins. Out of 52 patients with deep vein thrombosis, 6 patients had external iliac vein thrombosis, 21 patients had femoral vein thrombosis, 18 patients had popliteal vein thrombosis and 7 patients had thrombosis of leg veins. Duplex ultrasound has demonstrated its utility and efficacy in the diagnosis and follow-up of deep vein thrombosis of the lower extremity beside its availability for repeated follow up examinations

Acquisition of skills required for use of doppler ultrasound and the assessment of varicose veins

Doppler ultrasound is a useful adjunct to clinical examination for varicose veins. A simple study demonstrated that some one inexperienced in the use of the Doppler ultrasound can rapidly acquire sufficient expertise to use the instrument efficiently

Doppler study of the uterine artery in patients using IUD

Doppler flow study of the uterine artery using transvaginal sonography was done on 68 patients including 44 using IUD and 24 normal females not using any method of contraception. Both the pulsatility [PI] and resistance [RI] indices were significantly lower in patients with IUD induced bleeding as compared to those without abnormal vaginal bleeding complaint or in women not using any method of contraception. On the other hand, no significant variations in PI and RI levels were found with the duration of IUD induced bleeding or with the duration of IUD application in patients using the device. Also, no significant changes in blood flow indices were demonstrated between patients using the device and without abnormal vaginal bleeding and the control group. These preliminary results suggest that some women are more prone to develop IUD induced bleeding than others. Transvaginal Doppler study of the uterine artery may be a helpful technique to identify such group of patients

Correlación histopatológica de los hallazgos al tacto rectal y al ultrasonido prostático / Hystopathologic correlation between prostatic digital examination and transrectal ultrasound

Se presentan los resultados obtenidos en 138 pacientes que fueron estudiados desde el punto de vista prostático, practicándoseles el Tacto Rectal (TR), Ultrasonido Transrectal (USTR) y estudio histopatológico a través de biopsia guiada con USTR y Resección Transuretral (RTU). Se tabulan los hallazgos encontrados con estos procedimientos, encontrando una superioridad del USTR que presenta ausencia de falsos negativos, mientras que el TR tiene 15 casos. Esto hace que la sensibilidad y el valor de predicción negativo del USTR sea superior al TR. Existe un alto número de falsos positivos en el USTR, el cual se hace menos evidente en el último grupo de pacientes tratados, hecho que consideramos está en relación con la mayor experiencia del autor

Evaluation of arteriovenous fistula[AVF] by using doppler-sonography.

Dopplerosonography was used to evaluate the long term function of arteriovenous fistulas created in 60 patients with chronic renal failure. The fistulas were: 16 at the cubital fossa [side to side], 44 at the distal forearm [18 side to side, 18 end to side and 8 end to end], the diameter of the brachial artery feeding the fistula, ranged between 0.5- 0.8 mm. The flow volumes were calculated, they were 480, 310, 300, 140 ml/m respectively. Follow-up these patients showed that a mean flow volume between 300- 500 ml/m is quite enough for hemodialysis and flow volume less than 200 ml is insufficient for long term hemodialysis. Doppler sonograph is a simple, rapid and cheap method, and its use during creation of arterio-venous fistula can determine its efficiency in long term hemodialysis in patients with chronic renal failure