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Biomedical subjects

J A Becker

Publications and source records attributed to J A Becker.

At least 91 records · Page 5Linked to original sources
PubMed1976

Reticular neovascularity in malignant and inflammatory renal masses.

Experienced angiographers were asked to differentiate malignancy from inflammatory disease on arteriograms of 37 renal masses containing fine reticular neovascularity, as opposed to the coarser, more irregular vessels typical of hypernephroma. The rate of accuracy was only 58%. Distribution of vessels chiefly around the periphery of the mass was associated with a diagnosis of inflammatory disease in all 6 patients with this finding; this was the sole criterion which proved to be helpful in making the distinction. The authors feel that when arteriography reveals reticular neovascularity, differentiation between malignant and inflammatory renal masses may be difficult or impossible and that the term "tumor vascularity" should be avoided in such situations.

Diagnosis, Differential↗
PubMed1976

Arteriography of retroperitoneal lymphoma.

Arteriography was performed in 16 patients with various types of lymphoma involving the retroperitoneal space. The location and extent of the mass could be predicted in 15 cases, based upon displacement of major arteris or kidneys. Most of the studies demonstrated some degree of fine reticular neovascularity and staining within the mass; none showed extreme hypervascularity, coarse or ragged vessels, or pooling of contrast medium during the capillary phase. The differential diagnosis of lesions with this appearance includes metastases, sarcomas, neural tumors, and inflammatory masses. Arteriography may possibly prove to be of value in staging certain patients with lymphoma, although definitive assessment of its role must await further prospective studies.

Adult↗
PubMed1976

Sonographic-radiographic correlations of renal and perirenal infections.

Sonograms of 43 patients with intrinsic and perirenal infectious processes are reviewed. Fourteen had acute pyelonephritis; three, suppurative pyelonephritis; two, focal pyelonephritis; six, renal abscesses; three, infected cysts; six, perinephric abscesses; six, pyonephrosis; and three, chronic pyelonephritis. Sonography had little diagnostic value except for the patients with perinephric abscess. However, it proved valuable as a guide for a percutaneous approach to obtain cells for histologic diagnosis, to obtain fluid to determine chemotherapy, and to perform antegrade pyelography and percutaneous nephrostomy.

Abscess↗
PubMed1975

On the importance of teaching undergraduate radiology.

Radiology is a teaching tool that should be utilized throughout the four years of training of medical students. There are, however, not enough radiologists in academic life to teach radiology and recruit students to the specialty.

Education, Medical, Undergraduate↗
PubMed1975

More effective devices for teaching undergraduate radiology.

Two effective methods of teaching radiology to medical students are described. The Rotating Exhibit and Matching Displays methods allow students to master film facts by themselves and provide contact with the teaching radiologist for discussion of the film findings. Elements of participation, entertainment, variety, and discovery are features of these teaching techniques which supplement self-instructional methods.

Audiovisual Aids↗
PubMed1975

On the evaluation of medical students in radiology.

What a medical student has learned in radiology needs to be evaluated, not only to appraise the student's mastery of the subject but to determine the efficiency of teaching methods. A two-phase written/oral test for all students completing the fourth-year elective is described.

Education, Medical, Undergraduate↗
PubMed1975

Complementary role of sonography and arteriography in management of uterine choriocarcinoma.

Uterine choriocarcinoma develops fairly frequently after passage of a hydatidiform mole and very rarely after normal pregnancy or abortion. The disease is highly curable by chemotherapy, especially if detected early. Histologic examination of uterine curettings is unreliable and the principal indicator of active primary or metastatic disease is the HCG titer. The ability to visualize the tumor is helpful for a variety of reasons. In the past, this has been achieved primarily through arteriography. Our experience with 6 patients suggests that sonography is as sensitive a detector as arteriography and perhaps somewhat more specific. These facts, plus its convenience and repeatability, make ultrasound the method of choice for visualization of intrauterine malignant trophoblastic disease. Arteriography will continue to play an important role where the sonographic findings are equivocal and where local invasion or distant metastases are suspected.

Adult↗