The American College of Radiology designed a "crash" program to train radiologists to interpret and classify the radiological manifestations of coal workers' pneumoconiosis. This Viewbox Seminar combines two pedagogic techniques, group viewbox study, and a test-teach-test sequence of instruction that compels active participation in the learning process. Weekend scheduling and good location and transportation connections facilitate attendance, making this an excellent way to teach large groups of radiologists certain subtleties of radiology in a short time.

Audiovisual Aids↗

PubMed1975

Superior mediastinal shift in right-lower-lobe collapse: the "upper triangle sign".

In some patients with right-lower-lobe collapse a triangular shadow was seen in the right upper lung field, continuous with the mediastinum and with its apex pointing toward the right hilus. This represents a shift of the upper anterior mediastinum to the right and may be mistaken for right-upper-lobe collapse or an infiltrate by the unwary observer. This finding, which the authors call the "upper triangle sign," occurs frequently enough in cases of significant right-lower-lobe collapse to be a useful diagnostic sign.

Aged↗

PubMed1975

Solitary phalangeal defect in the hand. Report of 2 rare cases.

Two unusual causes of bone defect in the finger are described. In one patient, erosion of the proximal phalanx was caused by a ring that eroded its way through the soft tissue and bone after an injury. In the other, a subungual wart caused a defect on the distal phalanx.

Adolescent↗