Isolated intracranial Rosai-Dorfman disease: report of two cases and a review of the literature.

Rosai-Dorfman disease (RDD) is a rare but well-recognized idiopathic histioproliferative disease affecting the systemic lymph nodes. It is characterized by an unusual proliferation of histiocytic cells. Intracranial localization is a rare manifestation of RDD.

Right atrial appendage thrombus found in a patient in normal sinus rhythm with normal right ventricular systolic function.

A 79-year-old woman underwent transesophageal echocardiography to evaluate the severity of her mitral regurgitation prior to urgent bypass. Evaluation of the right-sided chambers was notable for a mass in the right atrial appendage (RAA). Surgical excision and pathologic examination proved this to be a thrombus.

Frequency of congenitally bicuspid aortic valves in patients ≥80 years of age undergoing aortic valve replacement for aortic stenosis (with or without aortic regurgitation) and implications for transcatheter aortic valve implantation.

The purpose of the present report was to determine the frequency of a congenitally bicuspid aortic valve in patients ≥80 years of age old with aortic stenosis (AS) severe enough to warrant aortic valve replacement. Transcatheter aortic valve implantation (TAVI) has traditionally been reserved for patients ≥80 years of age with severe AS involving a 3-cuspid aortic valve. Traditionally, AS involving a 2-cuspid aortic valve has been a contraindication to TAVI.

Effect of coronary bypass and valve structure on outcome in isolated valve replacement for aortic stenosis.

Reports differ regarding the effect of concomitant coronary artery bypass grafting (CABG) in patients who undergo aortic valve replacement (AVR) for aortic stenosis (AS), and no reports have described the effect of aortic valve structure in patients who undergo AVR for AS. A total of 871 patients aged 24 to 94 years (mean 70) whose AVR for AS was their first cardiac operation, with or without first concomitant CABG, were included. Patients who underwent mitral valve procedures were excluded.

Aortic medial elastic fiber loss in acute ascending aortic dissection.

The cause of acute aortic dissection continues to be debated. One school of thought suggests that underlying aortic medial cystic necrosis is the common denominator. The purpose of the present study was to determine if there was loss and, if so, how much loss of medial elastic fibers in the ascending aorta in patients with acute aortic dissection with the entrance tear in the ascending aorta.

Effect of body mass index on survival in patients having aortic valve replacement for aortic stenosis with or without concomitant coronary artery bypass grafting.

The purpose of this report is to describe the effect of body mass index (BMI) on 30-day and late outcome in patients having aortic valve replacement (AVR) for aortic stenosis (AS) with or without concomitant coronary artery bypass grafting. From January 2002 through June 2010 (8.5 years), 1,040 operatively excised stenotic aortic valves were submitted to the cardiovascular laboratory at Baylor University Medical Center at Dallas.

Comparison of the structure of the aortic valve and ascending aorta in adults having aortic valve replacement for aortic stenosis versus for pure aortic regurgitation and resection of the ascending aorta for aneurysm.

Background: There is debate concerning whether an aneurysmal ascending aorta should be replaced when associated with a dysfunctioning aortic valve that is to be replaced. To examine this issue, we divided the patients by type of aortic valve dysfunction-either aortic stenosis (AS) or pure aortic regurgitation (AR)-something not previously undertaken.

Methods And Results: Of 122 patients with ascending aortic aneurysm (unassociated with aortitis or acute dissection), the aortic valve was congenitally malformed (unicuspid or bicuspid) in 58 (98%) of the 59 AS patients, and in 38 (60%) of the 63 pure AR patients.

Aortic valve replacement for stenosis with or without coronary artery bypass grafting after 2 previous isolated coronary artery bypass grafting operations.

Aortic valve replacement following an earlier coronary artery bypass grafting (CABG) procedure is fairly common. When this situation occurs, the type of valve dysfunction is usually stenosis (with or without regurgitation), and whether it was missed at the time of the earlier CABG or developed subsequently is usually unclear. We attempted to determine the survival in patients who had had aortic valve replacement after 2 previous CABG procedures.

Valve structure and survival in quadragenarians having aortic valve replacement for aortic stenosis (+/-aortic regurgitation) with versus without coronary artery bypass grafting at a single US medical center (1993 to 2005).

The purpose of this study was to determine the effect of simultaneous coronary artery bypass grafting (CABG) and the influence of valve structure on both early and late survival in quadragenarians having aortic valve replacement (AVR) for aortic stenosis (AS) (with or without aortic regurgitation). We analyzed survival and valve structure in 48 adults (12 women), aged 40 to 49 years, having AVR for AS from 1993 through 2005 at Baylor University Medical Center, including 7 (15%) with and 41 (85%) without simultaneous CABG. Of the 48 quadragenarians, none died within 60 days of operation.

Valve structure and survival in quinquagenarians having aortic valve replacement for aortic stenosis (+/-aortic regurgitation) with versus without coronary artery bypass grafting at a single US medical center (1993 to 2005).

The purpose of this study was to determine the effect of simultaneous coronary artery bypass grafting (CABG) and the influence of valve structure on both early and late survival in quinquagenarians having aortic valve replacement (AVR) for aortic stenosis (AS) (with or without aortic regurgitation). We analyzed survival and valve structure in 120 quinquagenarians having AVR for AS from 1993 through 2005 at Baylor University Medical Center, including 44 (37%) with and 76 (63%) without simultaneous CABG. Of the 120 patients, 2 (2%) died within 30 days of operation and none from 31 to 60 days postoperatively.

Valve structure and survival in sexagenarians having aortic valve replacement for aortic stenosis (+/-aortic regurgitation) with versus without coronary artery bypass grafting at a single US medical center (1993 to 2005).

The purpose of this study was to determine the effect of simultaneous coronary artery bypass grafting (CABG) and the influence of valve structure on both early and late survival in sexagenarians having aortic valve replacement (AVR) for aortic stenosis (AS) (with or without aortic regurgitation). We analyzed survival and valve structure in 289 sexagenarians having AVR for AS from 1993 through 2005 at Baylor University Medical Center, including 147 (51%) with and 142 (49%) without simultaneous CABG. Of the 282 patients with information available, 13 (4.

Valve structure and survival in septuagenarians having aortic valve replacement for aortic stenosis (+/-aortic regurgitation) with versus without coronary artery bypass grafting at a single US medical center (1993 to 2005).

The purpose of this study was to determine the effect of simultaneous coronary artery bypass grafting (CABG) and the influence of valve structure on both early and late survival in septuagenarians having aortic valve replacement (AVR) for aortic stenosis (AS) (with or without aortic regurgitation). We analyzed valve structure in 424 septuagenarians having AVR for AS from 1993 through 2005 at Baylor University Medical Center, including 254 (60%) with and 170 (40%) without simultaneous CABG. Of the 424 patients, 8 (2%) had a congenitally unicuspid aortic valve, 179 (42%), a congenitally bicuspid aortic valve, 235 (55%), a 3-cuspid valve, and in 2 patients (1%) the valve structure was indeterminate.

Valve structure and survival in octogenarians having aortic valve replacement for aortic stenosis (+/- aortic regurgitation) with versus without coronary artery bypass grafting at a single US medical center (1993 to 2005).

The purpose of this study was to determine the effect of simultaneous coronary artery bypass grafting (CABG) and valve structure on both early and late survival in octogenarians having aortic valve replacement (AVR) for aortic stenosis (AS) (with or without aortic regurgitation). Although a number of reports are available in octogenarians having AVR for AS, none have described aortic valve structure. Most have limited numbers of patients and few have described late results.

Aortic valve replacement for aortic stenosis in nonagenarians.

We reviewed certain clinical and morphologic findings in 9 patients who had aortic valve replacement (AVR) for aortic stenosis (AS) when >or=90 years of age. All had AVR from February 2000 to April 2006. The aortic valve areas ranged from 0.

The Ross operation--early echocardiographic comparison of different operative techniques.

Fifty-four consecutive patients underwent aortic valve replacement with a pulmonary autograft (Ross operation) over an 18-month period. It was inserted as an intra-aortic cylinder in 13 patients and as a total aortic root replacement in 41; unwrapped in 16, partially wrapped with autologous pericardium in 12 and completely wrapped with bovine pericardium in 13. There were two cardiac deaths, one death from mediastinitis, and two early reoperations to replace an incompetent autograft.

Right lower quadrant pain in young patients with leukemia. A surgical perspective.

A retrospective review of cecal and appendiceal complications occurring in young patients with acute leukemia since 1969 was performed. The objective of this study was to determine the relative incidence of appendicitis and typhlitis among patients with acute leukemia who had operation or autopsy in this institution as well as to determine the risks of operative intervention. Fifteen patients with these complications were identified among the 400 patients with acute leukemia seen during this time period.

A family of optically compensated zoom lenses.

Several optically compensated zoom projection lenses have been designed. These lenses, used in special purpose film viewers and simulators, have unique characteristics not met by commercially available lenses. Unusually high resolution, large formats, and large magnification ranges have been achieved.