Faculty Bibliography

A ureteroinguinal hernia was demonstrated on both a Tc-99m mercaptoacetyltriglycine (MAG3) renal scan and a computed tomographic scan in an 81-year-old man with suspected urinary tract infection and a prior history of transurethral resection of the prostate. Ureteral hernias are relatively rare, although the ureteroinguinal hernia, found in elderly men on the right side, is the most common type. Ureteral hernias may be asymptomatic but can be present in patients with symptoms of obstructive uropathy.

Juvenile granulosa cell tumor (GCT) of the ovary is a rare neoplasm occurring in premenarchal girls and young women. Juvenile GCT that occurs in premenarchal girls usually produces sexual precocity as a consequence of estrogen secretion. Juvenile GCTs are more likely to grow to a relatively large size with a much smaller likelihood of peritoneal spread, unlike their counterpart, epithelial ovarian neoplasms. We report the radiology and pathology of a patient with juvenile GCT and review the literature of this rare tumor.

OBJECTIVE:The purpose of our study was to prospectively determine the incidence and nature of unblinding by authors as to their identities or institutions in their submission of original major manuscripts to two radiology journals with double-blinded peer review policies. MATERIALS AND METHODS/METHODS:The editors of two radiology journals reviewed 880 major original manuscripts submitted to their journals during a 6-month period without knowledge of the identities and institutions of the authors. Each manuscript was inventoried for possible author or institutional unblinding and for the specific types of unblinding violations. RESULTS:Of 880 manuscripts, 300 (34%) contained information that potentially unblinded the identities of the authors, their institutions, or both. The editors correctly identified the authors or institutions in 221 (74%) of the 300 manuscripts, which represented 25% of the total manuscripts. The most frequent unblinding violations were statement of the authors' initials within the manuscript, referencing work "in press," identifying references as the authors' previous work, and revealing the identity of the institution in the figures. CONCLUSION/CONCLUSIONS:Despite explicit instructions to authors, 34% of 880 prospectively evaluated manuscripts submitted to two radiology journals contained information that potentially or definitely unblinded the identities of the authors or their institutions.

Forty outpatients were randomized into two groups of 20. Twenty patients received 1 mg of intravenous glucagon and the other 20 did not. Three radiologists evaluated the bowel using a qualitative score and mean scores for each bowel level were compared. A different radiologist measured the maximal diameter of bowel at seven levels. There were no significant differences in qualitative or quantitative data for the two groups. Intravenous glucagon is therefore not routinely recommended for helical CT of the abdomen.

The combination of computed tomographic (CT) venography and pulmonary angiography (CTVPA) was initially described in 1998 as a single comprehensive noninvasive imaging examination for suspected thromboembolic disease. It allowed the identification of pulmonary embolism as well as deep venous thrombosis (DVT) in the abdomen, pelvis, thighs, and calves. The venographic portion of CTVPA has now been studied by multiple researchers and has been shown to be an accurate imaging study for the thigh veins in comparison with lower extremity sonography. In contrast to sonography, however, CTVPA readily and rapidly permits evaluation of the inferior vena cava, the pelvic veins, the calf veins, and all of the superficial venous system. Complex venous anatomy can be surveyed, an additional sonographic study is not required, and only a few extra minutes and images are required over and above CT pulmonary angiography. A review of 957 recent cases of suspected pulmonary embolism examined with CTVPA revealed an overall 10.5% frequency of DVT, with a nearly equal distribution of thrombosis at the common femoral, superficial femoral, popliteal, and deep calf veins. Although a variety of protocols for CTVPA may be implemented, including a contiguous helical acquisition, obtaining 5- or 10-mm-thick images every 4 cm provides a high degree of accuracy and decreases overall radiation dose.