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Biomedical subjects

T G Lee

Publications and source records attributed to T G Lee.

At least 91 records · Page 5Linked to original sources
PubMed1977

Intravenous renal angiography revisited.

A non-catheter technique to visualize the renal arteries during conventional excretory urography is re-emphasized. By rapid injection of the contrast agent and immediate filming satisfactory visualization can be obtained in many cases. This technique is useful in the evaluation of vascular impressions and other urographic findings when intra-arterial catheter examination is not indicated.

Angiography↗
PubMed1977

Ultrasonic diagnosis of the bladder as a symptomatic pelvic mass.

Diagnostic ultrasound for pelvic masses is now a well established modality. Its ability to distinguish between fluid-filled and solid lesions is important in the diagnostic study of pelvic masses. Two cases are presented of bladder distension causing clinical symptoms suggesting pathology outside the urinary tract, which when finally evaluated by ultrasound proved bladder distension as the etiology of the symptoms.

Diagnosis, Differential↗
PubMed1977

Antenatal ultrasonic demonstration of fetal bowel.

Although ultrasound evaluation of the adult gastrointestinal tract is largely impossible because of bowel gas, the fetal bowel is fluid-filled and therefore not subject to this limitation. In our experience, the fetal bowel pattern can be recognized and antenatal abnormalities detected.

Adolescent↗
PubMed1977

Prenatal fetal abdominal ultrasonography and diagnosis.

Despite the advent of gray scale recording, the feasibility and advantages of antenatal fetal ultrasound diagnosis have not received sufficient attention. This paper describes ultrasound fetal abdominal anatomy and illustrates prenatal diagnosis based on anatomical landmarks.

Adolescent↗
PubMed1977

Ultrasound diagnosis of common bile duct dilatation.

The use of ultrasound in the differential diagnosis of obstructive jaundice has been previously reported. Although common bile duct dilatation has been demonstrated, criteria for its accurate identification have not been stressed. This report describes findings and relationships helpful in recognition of a dilated common bile duct. It is important to identify this structure, since it could otherwise be confused with surrounding vessels.

Adenocarcinoma↗
PubMed1977

Ultrasonic aortography: unexpected findings.

In a series of 125 patients examined ultrasonically for suspected abdominal aortic aneurysms, 15 patients (12%) had intraabdominal abnormalities unrelated to the aorta. In 12 of these patients, a retroperitoneal malignancy clinically mimicked an aneurysm. In the remaining three, other abnormalities were discovered in addition to an aneurysm. In one patient, a large uterine myoma was visualized; in another, large retroperitoneal lymph nodes subsequently proved to be lymphoma; in the third, enlarged lymph nodes in association with a carcinoma of the colon were discovered. Because of the high incidence of unsuspected findings, ultrasonography should become an essential part of the evaluation of this group of patients.

Aged↗
PubMed1977

Obstructive jaundice after bone marrow transplantation.

Jaundice after bone marrow transplantation is usually a consequence of graft versus host disease. Reported is a patient who presented with obstructive jaundice several months after a successful marrow allograft. Despite a benign bone marrow examination, abdominal ultrasound, upper gastrointestinal series, and endoscopic biopsy were utilized to diagnose recurrent leukemia at the pancreatic head and descending duodenum. The entities of graft versus host disease as related to jaundice, and gastrointestinal leukemia, in the presence of a "remission" bone marrow, are reviewed.

Biopsy↗
PubMed1976

Posterior fossa cyst:prenatal diagnosis by ultrasound.

Ultrasound imaging of congenital anomalies in utero is feasible. Fetal intracranial details of a posterior fossa cyst were demonstrated by sonography. To our knowledge, an ultrasonic antenatal diagnosis of a posterior fossa cyst has not yet been reported.

Adult↗
PubMed1976

Complications of endoscopic retrograde cholangiopancreatography (ERCP). A study of 10,000 cases.

Of 402 United States owners of side-viewing duodenoscopes surveyed, 222 (55%) responded, reporting 10,435 endoscopic retrograde cholangiopancreatograms. Procedure failed occurred in 30%, complications in 3%, and death in 0.2%. Complications included pancreatitis, cholangitis, pancreatic sepsis, instrumental injury to the gastrointestinal tract, and drug reactions. Pancreatitis was associated with injection into the pancreatic duct, sepsis with injection into an obstructed duct or pseudocyst, and injury with abnormal gastroduodenal anatomy. Experienced workers had a 15% incidence of complications, whereas inexperience gave 4 times the failures (62%) and twice the complications (7%). The causes of complications and their prevention are discussed.

Cholangiography↗
PubMed1976

Ultrasound diagnosis of nonobstetric disease during pregnancy.

The use of ultrasound in obstetrics is well established; however, its use in nonobstetric disease during pregnancy has not been emphasized. A diagnostic work-up during pregnancy is complicated by the fact that many of the usual tests require radiation to the fetus. This paper presents 3 cases in which ultrasonic scanning contributed to the diagnosis of nonobstetric disease during pregnancy. Postitive findings included enlarged edematous pancreas, gallstones, and splenomegaly. In 1 case, the finding of a normal gallbladder was helpful. When usual diagnostic procedures such as oral cholecystogram, retrograde endoscopic pancreatography, and nuclear medicine scans are perhaps contraindicated during pregnancy, the ultrasound scan is the diagnostic test of choice.

Adult↗
PubMed1975

Ultrasound B-scanning with a gray scale video hard copy unit.

A gray scale hard copy unit has been adapted to an ultrasound B-scanner equipped with a video gray scale system and a conventional hard copier and a Polaroid camera. Comparative recordings were made of all three methods. The new hard copy unit produced a better gray scale image than Polaroid film, with reduction of cost and elimination of the problems inherent in Polaroid film.

Photography↗
PubMed1975

Small bowel biopsy by coaxial catheter. A simple, rapid technique.

A new small intestinal biopsy technique was developed and evaluated: it involves the rapid replacement of a simple duodenal tube using a controllable spring guide and fluoroscopy. A suction biopsy catheter was then passed coaxially through the tube as often as needed for sampling, after which other diagnostic studies were done with the same intubation. In clinical trials totaling 31 biopsies in 15 adult patients, the method proved safe and effective. Currently, the time required to intubate the ligament of Treitz and obtain two biopsies is usually less than 15 minutes.

Adult↗