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H C Burrell

Publications and source records attributed to H C Burrell.

22 records · Page 2Linked to original sources
PubMed1996

Screening interval breast cancers: mammographic features and prognosis factors.

PURPOSE: To review the mammographic features of screening interval breast cancers and to compare the tumor size, histologic grade, and lymph node involvement with those in screening-detected and unscreened symptomatic cancers. MATERIALS AND METHODS: Screening mammography was performed in 72,773 women aged 50-64 years. Ninety interval cancers were identified in 89 women. The mammographic and histopathologic features of these cancers were analyzed. RESULTS: At review of the screening mammograms, interval cancers were classified into four groups: 51 true-positive, 20 false-negative, seven mammographically occult, and 12 unclassified. The most common missed abnormality in the false-negative cases was architectural distortion. Interval cancers were larger, of higher grade, and more likely to have lymph node involvement than screening-detected tumors and were of similar size, histologic grade, and stage of lymph node involvement as symptomatic tumors. CONCLUSION: Prognosis in interval cancers is similar to that in symptomatic, unscreened tumors and statistically significantly worse than that in screening-detected cancers.

Breast Neoplasms↗
PubMed1994

Significant plain film findings in sigmoid volvulus.

The aim of this study was to evaluate the plain abdominal radiographs of patients thought clinically to have a sigmoid volvulus. Strict diagnostic criteria based on the findings at barium enema and/or surgery were applied to establish or refute a diagnosis of sigmoid volvulus. The presenting plain abdominal radiographs were assessed for 10 radiological signs considered valuable in the diagnosis of sigmoid volvulus. Of the 17 patients with a volvulus, 88% had 6 or more signs, and in the 5 patients without a volvulus, 80% had 4 signs or less. Five signs achieved significance in differentiating between the groups. Three signs, apex of the loop under the left hemi-diaphragm, inferior convergence on the left and the left flank overlap sign, were 100% specific as well as being highly sensitive. The signs which were least specific were a distended ahaustral sigmoid loop and an air fluid ratio greater than 2:1.

Colon, Sigmoid↗