Cavoportal hemitransposition in liver transplantation.

Over the last decade a large number of patients with portal vein thrombosis have undergone successful liver transplantation. In most of these patients, simple modifications in vascular reconstruction techniques are adequate. However, anastomosis of the donor portal vein may not be possible in the presence of extensive portal and superior mesenteric venous thrombosis and in the absence of any other large tributary of the portal venous system. Cavoportal hemitransposition has been described as a salvage technique under these circumstances. We report a 43-year-old patient who underwent such a procedure and remains well 1 year later. We review the literature and discuss the implications of cavoportal hemitransposition.

Spontaneous rupture of the liver upon revascularization during transplantation.

Spontaneous rupture of the liver has been described in association with many benign and malignant conditions. We report, to our knowledge, the first case of spontaneous rupture of the liver upon revascularization, requiring total hepatectomy and portocaval shunt, followed by successful retransplantation. Routine pathological examination of the explanted liver failed to reveal the etiology of the rupture. However, electron microscopy demonstrated abnormal collagen in the hepatic arterial wall compatible with a collagen disorder such as Ehlers-Danlos type IV disease. We conclude that the donor liver had a previously undiagnosed collagen disorder. Review of the literature does not preclude the use of livers from donors with a history of connective tissue disorders. Based on our experience one should exercise caution when using livers from such donors. With a history of connective tissue disorder in an immediate family member, further tests should be performed in the donor to rule out a subclinical connective tissue disorder. In addition, a review of all patients reported thus far to have undergone total hepatectomy and portocaval shunt, followed by liver transplantation as a two-stage procedure is presented.

Selective management of embolized intracardiac missiles.

Intracardiac projectiles are occasionally found in stable patients who have sustained penetrating trauma. These missiles may arise from embolization from a peripheral injury site. We describe 3 patients with embolized intracardiac projectiles. The diagnosis was suggested by the presence of a foreign body within the cardiac silhouette on chest roentgenograms and was confirmed using fluoroscopy, echocardiography, or computed tomography. The management of embolized intracardiac missiles should be individualized to each patient. All of our patients had fixed intracavitary right-sided missiles and were successfully managed expectantly.

Outcome and utility of scoring systems in the management of the mangled extremity.

BACKGROUND: The role of scoring systems as predictors of amputation and functional outcome in severe blunt extremity trauma was examined. METHODS: All severe extremity injuries treated over a 10-year period were scored retrospectively using four scoring systems: Mangled Extremity Syndrome Index (MESI), Mangled Extremity Severity Score (MESS), Predictive Salvage Index (PSI), and Limb Salvage Index (LSI). RESULTS: Twenty-three upper (UE) and 51 lower extremity (LE) injuries were evaluated. Sensitivity and specificity, respectively, were MESI 100% and 50%, MESS 79% and 83%, PSI 96% and 50%, and LSI 83% and 83%. For each system, there were no differences between patients with good and poor functional outcomes. CONCLUSION: All of the scoring systems were able to identify the majority of patients who required amputation. However, prediction in individual patients was problematic. None of the scoring systems were able to predict functional outcome.

Small bowel perforation from a migrated biliary stent.

Stenting of the biliary tract is performed for a variety of benign and malignant disorders. Although uncommon, proximal and distal migration of these stents is known to occur. We report a case of jejunal perforation from a distally migrated biliary stent.

Heterotopic pregnancy presenting as an acute abdomen: a diagnostic masquerader.

Simultaneous intrauterine and extrauterine pregnancy is called heterotopic pregnancy. It is a rare complication of pregnancy, especially in the absence of predisposing factors. It is known to present with a variety of symptoms and signs often leading to a delay in establishing the correct diagnosis. We report the case of a 29-year-old woman, known to be 14 weeks pregnant, presenting with acute abdominal pain. The confirmation of a viable intrauterine pregnancy led to a general surgery consultation. A heterotopic ruptured right ectopic tubal pregnancy was found. Right salpingectomy was performed. The patient recovered uneventfully. The intrauterine pregnancy was not affected. This case illustrates the variable presentation of heterotopic pregnancy and the need for general surgeons to be suspicious of pregnancy related complications, even in the presence of a viable intrauterine pregnancy.

Combined cardio-renal transplantation (CCRT) from the same donor: report of two cases and review of the literature.

Two patients with successful combined cardio-renal transplantation (CCRT) using allografts from the same donor are reported. Both patients underwent staged procedure with hearts being transplanted first followed by kidneys. One patient suffered simultaneous acute rejection of both allografts, indeed a very rare event, which was successfully treated with pulse steroids. Because of the successful patient and graft outcomes, we propose that staged CCRT offers a reasonable therapeutic option for patients with co-existing, irreversible cardiorenal failure.

Oxalate kinetics and reversal of the complications after orthotopic liver transplantation in a patient with primary hyperoxalosis type 1 awaiting renal transplantation.

We present the case of a young woman with end-stage renal disease secondary to primary hyperoxaluria type 1, who after 3 years and 6 months of maintenance hemodialysis, and despite intensification of the dialytic treatment, developed severe livedo reticularis in her extremities leading to ischemic cutaneous ulcerations, necessitating continuous intravenous infusion of narcotics for pain control. She received a liver transplant after native hepatectomy. However, due to positive crossmatch, she could not receive a kidney from that donor. After transplantation, following serial serum oxalate levels, the hemodialysis regimen was safely reduced from 4 h daily to 3 h three times weekly. Over the course of 6 weeks after liver transplantation, her livedo reticularis resolved, the ischemic ulcers markedly improved, she was weaned off all pain medications, and her erythropoietin-resistant anemia resolved. Our results suggest that in patients with primary hyperoxaluria type 1, who have received a liver transplant and are on maintenance hemodialysis, after serial serum oxalate determinations, some may safely be changed to a thrice-weekly maintenance hemodialysis regimen. Moreover, with this regimen the complications of systemic oxalosis can reverse.

Prognostic value of dipyridamole thallium-201 screening to minimize perioperative cardiac complications in diabetics undergoing kidney or kidney-pancreas transplantation.

To minimize perioperative cardiac events, we utilize a screening protocol consisting of intravenous dipyridamole thallium-201 myocardial imaging (DPT), with the selective use of coronary angiography based on the presence of reversible defect(s) on DPT test. A retrospective study was performed to determine the prognostic value of this protocol and to identify any clinical parameters predictive of an abnormal DPT test. To accomplish this, a detailed chart analysis of 176 consecutive kidney (n = 89) and kidney-pancreas (n = 87) transplant recipients who had undergone pretransplant DPT testing was performed. The results of the DPT test were interpreted as normal in 111, fixed defect in 15, and reversible defect(s) in 50 patients. Forty-two of the 50 patients with reversible defect(s) underwent coronary angiography. Twelve of the 27 patients with significant coronary artery disease (CAD, > 50% stenosis in one or more coronary arteries) underwent pretransplant revascularization and the remaining 15 were treated medically. Cardiac events (documented acute myocardial infarction or sudden cardiac death) within 6 wk of transplant were stratified by the results of this protocol. Also, various clinical parameters were compared between patients with normal and abnormal (fixed and reversible defect) DPT tests. Only one of the 111 (0.9%) transplant recipients with a normal DPT test had a perioperative cardiac event. None of the 15 (0%) patients with a fixed defect and none of the 15 (0%) patients with reversible defect(s), but a nonsignificant (< 50% narrowing) coronary angiogram, had a perioperative cardiac event. Three of the 27 (11.1%) patients with reversible defect(s) and significant disease on coronary angiography, who had undergone pre-transplant revascularization or were managed medically, had a perioperative coronary event. Of 14 recipients parameters analyzed, age > 50 yr was the only variable predictive of an abnormal DPT test. We conclude that the incidence of perioperative cardiac events in patients with a normal or fixed defect, or reversible defect(s) but a nonsignificant (< 50% narrowing) coronary angiogram is very low, indicating the high correlation of these findings on DPT and an uneventful (cardiac) post-transplant course. The incidence of perioperative cardiac complications amongst the high-risk transplant recipients with reversible defect(s) and significant CAD on coronary angiogram may be minimized by appropriate preoperative medical management or revascularization. None of the clinical variables except age > 50 yr was predictive of an abnormal DPT test.