Lawrence Edward Kass

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BACKGROUND Needle localization breast biopsy (NLBB) is the standard for removal of breast lesions after vacuum assisted core biopsy (VACB). Disadvantages include a miss rate of 0% to 22%, a positive margin rate of approximately 50%, and vasovagal reactions (approximately 20%). We hypothesized that clip migration after VACB is clinically significant and may(More)
Using the high resolution technique of isoelectric focusing in polyacrylamide gel, isoenzymatic components could be discerned in acid phosphatase extracted from normal human lymphocytes, granulocytes, monocytes, and platelets. For each cell type, distinctive isoenzymatic patterns of acid phosphatase activity could be observed. These studies provide further(More)
  • L Kass
  • American journal of clinical pathology
  • 1977
Utilizing a unique ability of homocysteine to form a yellow-brown precipitate with nickel chloride, a cytochemical test was developed in an effort to identify this amino acid. Among a variety of types of anemias studied, bright yellow-colored erythrocytes and erythroid precursors were found only in marrows from patients who had untreated pernicious anemia(More)
Using the high resolution technique of isoelectric focusing in polyacrylamide gel, isoenzymatic components of acid phosphatase were detected in cell-free extracts prepared from different cytologic types of leukemic blasts in adults. Results indicate that for different cytologic types, different characteristic patterns of acid phosphatase isoenzyme could be(More)
Isolated fallopian tube torsion is a rare entity that most frequently occurs during the menstruating years, but has also been reported in premenopausal and postmenopausal women. Diagnosis of this condition is often delayed because of the rarity of its occurrence and prolonged investigations to rule out more common causes of acute abdominal pain. A case of a(More)
Society has a right to expect that all physicians possess basic knowledge of emergency care and the skills to manage acute problems. Competency in the care of acutely ill and injured patients is one of the fundamental exit goals of most medical schools as mandated by the Liaison Committee on Medical Education. Several groups have called for strengthening(More)
The Sysmex R-3000 (TOA Medical Electronics, Kobe, Japan) evaluates maturation of reticulocytes by quantitating the fraction of reticulocytes within low-, middle-, and high-fluorescence intensity regions. We defined the immature reticulocyte fraction (IRF) as the sum of the fraction of high-fluorescence intensity regions plus the fraction of(More)
To evaluate the recently published Utstein algorithm (Ann Emerg Med 1991;20:861), the authors conducted a retrospective review of all advanced life support (ALS) trip sheets and hospital records of patients with prehospital cardiac arrests between January 1988 and December 1989. Telephone follow-up was used to determine 1-year survival rates. Of 713 arrests(More)