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Biomedical subjects

G Alexander Patterson

Publications and source records attributed to G Alexander Patterson.

At least 55 records · Page 3Linked to original sources

Outcomes after resection of giant emphysematous bullae.

BACKGROUND: Giant emphysematous bullae represent a rare form of emphysematous lung destruction. Surgical resection has traditionally been indicated when there is hyperexpansion of the chest, compromised pulmonary function, and evidence of underlying, relatively normal compressed lung. We review our experience and intermediate-term follow-up after the resection of giant bullae. METHODS: Forty-three patients underwent resection of giant emphysematous bullae at Barnes-Jewish Hospital between March 1994 and June 2002. All had limiting dyspnea and radiologic evidence of hyperinflated giant bullae compressing adjacent lung parenchyma. Forty-one patients underwent preoperative pulmonary rehabilitation. Twenty-two patients underwent a bilateral procedure and 21 underwent a unilateral procedure. Mean follow-up was 4.5 years. RESULTS: One early death occurred on postoperative day 20 from heparin-induced thrombocytopenia and pulmonary embolism. Complications included prolonged air leak of more than 7 days in 23 (53%), atrial fibrillation in 5 (12%), postoperative mechanical ventilation in 4 (9%), and pneumonia in 2 (5%). Kaplan-Meier survival at 1, 3, and 5 years was 98%, 92%, and 89%, respectively. Four late deaths occurred at 1.4, 2.8, 3.5, and 5.9 years. Functional measures preoperatively and at 6 months and 3 years postoperatively were a forced expiratory volume in 1 second L (% predicted) of 1.2 +/- 0.6 (34%), 1.9 +/- 0.9 (55%), and 1.5 +/- 0.8 (49%); residual volume L (% predicted) of 5.1 +/- 1.2 (262%), 3.6 +/- 1.2 (154%), and 4.1 +/- 2.2 (209%); 6-minutes walk (ft) of 1230 +/- 361, 1393 +/- 300, and 1271 +/- 423; supplemental O2 used continuously (% patients) of 42%, 9%, and 21%; and O2 used during exercise of 73%, 37%, and 42%, respectively. CONCLUSIONS: In a contemporary series, giant bullectomy is shown to produce significant immediate functional improvement. This benefit declines with time but persists at least 3 years.

Blister↗

Endobronchial gene transfer of soluble type I interleukin-1 receptor ameliorates lung graft ischemia-reperfusion injury.

BACKGROUND: Soluble type I interleukin-1 receptor is a competitive inhibitor of interleukin-1 and may reduce its proinflammatory actions. The objective of this experiment was to demonstrate that endobronchial gene transfer of soluble type I interleukin-1 receptor IgG to donor lung grafts reduces posttransplant ischemia-reperfusion injury. METHODS: All experiments utilized an orthotopic left lung isograft transplant model. Donors were divided into three groups (n = 6 each) for endobronchial transfection: group I received 2 x 10(7) plaque-forming units of adenovirus encoding soluble type I interleukin-1 receptor IgG; group II received 2 x 10(7) plaque-forming units of nonfunctional control adenovirus encoding beta-galactosidase; and group III received 0.1 mL of saline. Left lungs were harvested 24 hours after transfection and stored for 18 hours before transplantation. Graft function was assessed 24 hours after reperfusion using three measurements: isolated graft oxygenation, wet-to-dry lung weight ratio, and tissue myeloperoxidase activity. Transgene expression of soluble type I interleukin-1 receptor IgG was also evaluated using enzyme-linked immunosorbent assay and immunohistochemistry. RESULTS: Isolated graft arterial oxygenation was significantly improved in group I compared with groups II and III (281.8 +/- 134.8 versus 115.7 +/- 121.5 and 88.0 +/- 58.9 mm Hg, p = 0.0197 and p = 0.0081, respectively). Myeloperoxidase activity was also significantly reduced in group I compared with groups II and III (0.083 +/- 0.044 versus 0.155 +/- 0.043 and 0.212 +/- 0.079 optical density units per minute per milligram protein, p = 0.0485 and p = 0.0016, respectively). Expression of soluble type I interleukin-1 receptor IgG was detected only in lungs from group I. CONCLUSIONS: Endobronchial gene transfer of soluble type I interleukin-1 receptor IgG to donor lung grafts subjected to prolonged cold ischemia ameliorates ischemia-reperfusion injury by improving graft oxygenation and reducing lung edema and neutrophil sequestration.

Animals↗

Yield of surveillance bronchoscopy for acute rejection and lymphocytic bronchitis/bronchiolitis after lung transplantation.

BACKGROUND: Better understanding of the timing and pattern of surveillance bronchoscopy findings after lung transplantation could influence the timing and frequency of surveillance bronchoscopy. We present our surveillance bronchoscopy experience and test the hypothesis that patients not encountering early acute rejection or lymphocytic bronchitis/bronchiolitis are less likely to have subsequent occult occurrences in the 1st year after lung transplantation. METHODS: We conducted a retrospective study of 204 patients who underword transplantation between 1996 and 2000. Based on contemporary biopsy-specimen grading in the first 100 days, we formed 2 groups: No Early Rejection and Early Rejection. We compared subsequent yields of surveillance bronchoscopy and the incidence of acute rejection or of lymphocytic bronchitis/bronchiolitis. RESULTS: We reviewed 645 biopsies taken from 204 recipients during the first 100 days to classify patients into a No Early Rejection Group (n=67) or an Early Rejection Group (n=137). Yield of surveillance bronchoscopy for acute rejection or lymphocytic bronchitis/bronchiolitis was 31% with the greatest yield during the first 30 days (45%), and then decreasing to 26% (p <0.001). After Day 100, 71% of occult acute rejection episodes involved minimal (A1) lesions. Yield of surveillance bronchoscopy after Day 100 was 20% in the No Early Rejection Group and was 27% in the Early Rejection Group (p=0.22). Incidence of acute rejection or lymphocytic bronchitis/bronchiolitis after Day 100 was 41% in the No Early Rejection Group and was 50% in the Early Rejection Group (p=0.17). CONCLUSION: Surveillance bronchoscopy detects occult acute rejection or lymphocytic bronchitis/bronchiolitis in approximately one-third of biopsy specimens during the 1st year, with the majority of late abnormalities being minimal (A1) rejection. The absence of acute rejection or lymphocytic bronchitis/bronchiolitis during the first 100 days does not predict freedom from such events in the remainder of the 1st year.

Acute Disease↗

Down-regulation of beta catenin inhibits the growth of esophageal carcinoma cells.

INTRODUCTION: Esophageal cancer remains a highly lethal malignancy, with therapeutic options of limited efficacy in the majority of patients. Understanding the molecular events involved in the pathogenesis of esophageal cancer offers insight into potential targets for treatment. Beta catenin and Wnt signaling abnormalities are involved in the development of both adenocarcinoma and squamous carcinoma of the esophagus. We hypothesized that down-regulation of beta catenin would inhibit the growth of human esophageal cancer. METHODS: A human esophageal squamous cell carcinoma cell line (TE10) was treated with phosphorothioate antisense oligonucleotides to beta catenin. The cells were subsequently assayed for beta catenin mRNA and protein by real-time polymerase chain reaction and Western blot. Beta catenin transcriptional activity was determined by TOPFlash assay. Cell viability and growth was assessed by methyl-thiazol-diphenyl-tetrazolium assay and trypan blue exclusion. A colorimetric assay was employed to assess caspase 3 activity, and flow cytometry was done to determine percentage of cells in a given phase of the cell cycle. RESULTS: Following antisense treatment, beta catenin mRNA and protein concentration were decreased. There was corresponding decrease in beta catenin-transcription factor-dependent transcription. Treatment with beta catenin antisense resulted in significantly decreased cell viability and proliferation. The mechanism appears to be increased induction of apoptosis. CONCLUSIONS: These data suggest a potential role for the targeting of beta catenin in the treatment of esophageal cancer.

Analysis of Variance↗

Benefits of resection for metachronous lung cancer.

OBJECTIVES: The benefits of resection for metachronous lung cancer are not well described. The objective of this study was to evaluate the safety and efficacy of surgical resection for metachronous lung cancers. METHODS: We reviewed the charts of all patients who underwent a second resection for a metachronous lung cancer from July 1, 1988, to December 31, 2002. Type of resection, operative morbidity, mortality, and survival by stage were analyzed. Survival was determined by using the Kaplan-Meier survival method. All patients were pathologically staged by using the 1997 American Joint Committee on Cancer standards. RESULTS: Pulmonary resections were performed in 69 patients who had undergone a previous resection. The mean interval between the first and second resection was 2.4 +/- 2.5 years. Seventy-three percent of patients presented with stage I cancers, 9% with stage II cancers, and 17% with stage III cancers. Lobectomy and wedge resection were performed with equal frequency (42% each) for the metachronous cancers. Operative mortality for the second resection was 5.8%. The mean follow-up after the second resection was 37 months. Overall 5-year actuarial survival for the entire group after the second resection was 33.4%. CONCLUSIONS: Operations for metachronous cancers provided survival that approximated the expected survival for lung cancer. Surgical intervention should be considered as a safe and effective treatment for resectable metachronous lung cancer in patients with adequate physiologic pulmonary reserve.

Aged↗

Results of lung volume reduction surgery in patients meeting a national emphysema treatment trial high-risk criterion.

OBJECTIVES: A report from the National Emphysema Treatment Trial indicated that lung volume reduction candidates with a forced expiratory volume in 1 second and a diffusing capacity of carbon monoxide of 20% or less of predicted value were at high risk for mortality and were unlikely to benefit from surgical intervention. This article examines the applicability of the National Emphysema Treatment Trial findings to our own patients. METHODS: We reviewed 280 patients who underwent bilateral lung volume reduction surgery at our institution between January 1993 and December 2001. All patients met our selection criteria, including heterogeneous distribution of emphysema. Of these 280 patients, 20 patients had both a preoperative forced expiratory volume in 1 second and a diffusing capacity of carbon monoxide of less than or equal to 20% of the predicted normal values, thus meeting one National Emphysema Treatment Trial criterion for high risk. Outcomes of the 20 patients were assessed through 5 years after the operation. The survival of the 20 patient cohort was compared with that of the 260 patients not meeting the National Emphysema Treatment Trial high-risk criterion. RESULTS: Ninety-day operative mortality included 1 (5%) patient. In all patients the forced expiratory volume in 1 second increased from 0.46 L (17%) to 0.78 L (32%), a 73% change; the diffusing capacity of carbon monoxide increased from 16% to 27%, a 70% improvement; residual volume decreased from 6.33 L (305%) to 4.26 L (205%), a 33% improvement; and room air arterial partial pressure of oxygen increased from 55 mm Hg to 64 mm Hg. Kaplan-Meier 5-year survivals did not differ between the high-risk and non-high-risk groups. CONCLUSIONS: Patients with a forced expiratory volume in 1 second and a diffusing capacity of carbon monoxide of 20% or less of predicted value might experience improvements in lung function, exercise tolerance, and quality of life with acceptable morbidity and mortality after lung volume reduction surgery.

Aged↗

Gene transfer of tumor necrosis factor inhibitor improves the function of lung allografts.

BACKGROUND: Tumor necrosis factor is an important mediator of lung transplant acute rejection. Soluble type I tumor necrosis factor receptor binds to tumor necrosis factor-alpha and -beta and inhibits their function. The objectives of this study were to demonstrate efficient in vivo gene transfer of a soluble type I tumor necrosis factor receptor fusion protein (sTNF-RI-Ig) and determine its effects on lung allograft acute rejection. METHODS: Three groups of Fischer rats (n = 6 per group) underwent recipient intramuscular transfection 24 hours before transplantation with saline, 1 x 10(10) plaque-forming units of control adenovirus encoding beta-galactosidase, or 1 x 10(10) plaque-forming units of adenovirus encoding human sTNF-RI-Ig (Ad.sTNF-RI-Ig). One group (n = 6) received recipient intramuscular transfection with 1 x 10(10) Ad.sTNF-RI-Ig at the time of transplantation. Brown Norway donor lung grafts were stored for 5 hours before orthotopic lung transplantation. Graft function and rejection scores were assessed 5 days after transplantation. Time-dependent transgene expression in muscle, serum, and lung grafts were evaluated by using enzyme-linked immunosorbent assay of human soluble type I tumor necrosis factor receptor. RESULTS: Recipient intramuscular transfection with 1 x 10(10) plaque-forming units of Ad.sTNF-RI-Ig significantly improved arterial oxygenation when delivered 24 hours before transplantation compared with saline, beta-galactosidase, and Ad.sTNF-RI-Ig transfection at the time of transplantation (435.8 +/- 106.6 mm Hg vs 142.3 +/- 146.3 mm Hg, 177.4 +/- 153.7 mm Hg, and 237.3 +/- 185.2 mm Hg; P =.002,.005, and.046, respectively). Transgene expression was time dependent, and there was a trend toward lower vascular rejection scores (P =.066) in the Ad.sTNF-RI-Ig group transfected 24 hours before transplantation. CONCLUSIONS: Recipient intramuscular Ad.sTNF-RI-Ig gene transfer improves allograft function in a well-established model of acute rejection. Maximum benefit was observed when transfection occurred 24 hours before transplantation.

Adenoviridae↗

Lung cancer resection combined with lung volume reduction in patients with severe emphysema.

OBJECTIVE: Certain patients with resectable lung cancer and severe respiratory limitation due to emphysema may have a suitable operative risk by combining cancer resection with lung volume reduction surgery. The purpose of this study is to review our experience with such patients. METHODS: A review was conducted on 21 patients with lung cancer in the setting of severe emphysema who underwent an operation designed to provide complete cancer resection and volume reduction effect. RESULTS: In the 21 patients, the mean preoperative forced expiratory volume in 1 second was 0.7 +/- 0.2 L (29% predicted), residual volume was 5.5 +/- 1.0 L (271%), and diffusing capacity for carbon monoxide was 8.0 +/- 2.2 mL/min/mm Hg (34% predicted). In 9 patients, the cancer was located in a severely emphysematous lobe and the lung volume reduction surgery component of the procedure was accomplished with lobectomy alone. In the remaining 12 patients, the cancer resection lobectomy (n = 9) and wedge resection (n = 3) were supplemented with lung volume reduction surgery. Final pathologic staging was stage I in 16 patients, stage II in 2 patients, and stage III in 2 patients. One patient was found to have stage IV disease due to multifocal tumors in separate lobes. There were no hospital deaths. Postoperative complications included prolonged air leak in 11 patients, atrial fibrillation in 6 patients, and reintubation for ventilatory assistance in 2 patients. All patients showed improved lung function postoperatively. Survival was 100% and 62.7% at 1 and 5 years, respectively. CONCLUSIONS: Patients with severe emphysema and resectable lung cancer who have a favorable anatomy for lung volume reduction surgery may undergo a combined cancer resection and lung volume reduction surgery with an acceptable risk and good long-term survival.

Aged↗

Correlation between interleukin-15 and granzyme B expression and acute lung allograft rejection.

The levels of interleukin (IL)-15 and granzyme B mRNA expression have been correlated with acute rejection episodes of kidney and heart allografts. Thus, the purpose of this study was to determine whether a correlation exists between the expression of IL-15 and granzyme B and acute lung allograft rejection. Toward this, the levels of IL-15 and granzyme B mRNA expression were determined in bronchoalveolar lavage-derived alveolar macrophages and total cells, respectively, from lung transplant patients with stable lung allograft function and patients undergoing acute rejection episodes. The expression levels of IL-15 mRNA was significantly higher in the patients undergoing acute rejection as compared to patients with stable lung function (P=0.02). The expression levels of granzyme B mRNA was also significantly higher in the patients undergoing acute rejection as compared to patients with stable lung function (P=0.005). The Receiver-Operating-Characteristic curve demonstrated that acute rejection can be predicted with a sensitivity of 94% and specificity of 67% with the use of a cutoff value of 3.1 fg of granzyme B mRNA per microgram of total RNA (or 71% sensitivity and 75% specificity of a cutoff value of 9.1 fg/microg). These data indicate that IL-15 secreted by activated alveolar macrophages and granzyme B secreted by activated CD8+ cytotoxic T lymphocytes play important roles in the process of acute lung allograft rejection.

Female↗

Lung transplantation for lymphangioleiomyomatosis.

BACKGROUND: Lymphangioleiomyomatosis is a rare disease in women leading to respiratory failure. We describe a single-institution experience with lung transplantation for end-stage lymphangioleiomyomatosis. METHODS: We retrospectively reviewed records of patients transplanted for lymphangioleiomyomatosis between 1989 and 2001. Follow-up was complete on all patients (median 3.5 years). RESULTS: Seven single and 7 bilateral transplants were performed on 14 recipients (mean age 41.8 years). Eleven patients suffered the following intra-operative complications: dysrhythmia (1); blood loss > 1,000 ml (7); extensive pleural adhesions (10); hypothermia (1); phrenic nerve injury (1); and graft dysfunction (2). The following post-operative complications occurred in 11 recipients: dysrhythmia (7); respiratory failure (5); sepsis (3); airway dehiscence (2); vocal cord dysfunction (1); cholecystitis (1); deep vein thrombosis (1); acute renal failure (1); and pericarditis (1). Post-operative chylous fistulas necessitated thoracic duct ligation (1); sclerosis (6); and drainage of ascites (1). There were no peri-operative deaths. Late deaths occurred due to sepsis in 2 patients and obliterative bronchiolitis in 1 patient. Survival rates were 100%, 90% and 69% at (1, 2 and 5 years, respectively.) Mean FEV1 (1.77 +/- 1.06 vs 0.60 +/- 0.91) and 6-minute walk (1,519 +/- 379 vs 826 +/- 293 feet) improved at 1 year as compared with pre-transplant evaluation. Five patients reached criteria for bronchiolitis obliterans syndrome. One recipient has had a documented recurrence of lymphangioleiomyomatosis in the transplanted lung. CONCLUSIONS: Early and late survival after lung transplant are comparable in lymphangioleiomyomatosis patients versus patients with other diseases. Morbidity is common after transplant for lymphangioleiomyomatosis and is usually due to lymphangioleiomyomatosis-related complications. Lymphangioleiomyomatosis recurrence in the allograft does not pose a substantial clinical problem.

Adult↗

Airway epithelium is the primary target of allograft rejection in murine obliterative airway disease.

Murine heterotopic tracheal allografts develop obliterative airway disease (OAD), a suitable model of chronic lung allograft rejection. This model, however, fails to account for the behavior of the allograft when adjacent to recipient airway tissues, particularly the epithelium. This study was performed to determine the immunologic role of the epithelium in development of OAD. BALB/c (H2d) tracheal allografts were transplanted orthotopically into C57BL/6 (H2b) mice and harvested 14-150 days post-transplantation. The phenotype of the allograft epithelium after orthotopic transplantation was determined with immunofluorescent staining. Orthotopic BALB/c tracheal allografts harvested at 28 days were re-transplanted heterotopically into BALB/c or C57BL/6 mice, harvested after 28 days, and assessed for OAD. Orthotopic allografts displayed mild cellular infiltration, no fibrosis and preserved epithelium at 28 days post-transplant. The presence of recipient-derived epithelium within the allograft was demonstrated with immunofluorescent staining at day 14. Significantly, BALB/c orthotopic allografts re-transplanted heterotopically into BALB/c mice developed OAD by day 28, whereas BALB/c orthotopic allografts re-transplanted heterotopically into C57BL/6 mice did not. Repopulation of orthotopic tracheal allografts with recipient-derived epithelium confers a protective effect against OAD after heterotopic re-transplantation. This indicates that the airway epithelium plays a crucial role in OAD development.

Animals↗

The predictive value of bronchiolitis obliterans syndrome stage 0-p.

Bronchiolitis obliterans syndrome (BOS) remains the main cause of graft loss after lung transplantation. Stage 0-p was recently added to the staging criteria to detect early deterioration in allograft function that might presage BOS stage 1. We assessed the predictive value of stage 0-p by retrospectively analyzing spirometric data for 203 adult bilateral lung transplant recipients. The FEV(1) criterion for stage 0-p had a positive predictive value of 79% and a negative predictive value of 82%. In contrast, the FEF(25-75%) criterion for stage 0-p had a positive predictive value of 52% and a negative predictive value of 72%. Fifty-seven percent of subjects who developed stage 0-p by the FEV(1) criterion progressed to stage 1 within 1 year, whereas only 37% of those who developed stage 0-p by the FEF(25-75%) criterion progressed to stage 1 within 1 year. We conclude that the FEV(1) criterion for stage 0-p is a reasonable predictor of BOS stage 1 after bilateral lung transplantation, but the FEF(25-75%) criterion for stage 0-p is not predictive of BOS stage 1 after bilateral lung transplantation.

Bronchiolitis Obliterans↗

Immunotargeting of catalase to the pulmonary endothelium alleviates oxidative stress and reduces acute lung transplantation injury.

Vascular immunotargeting may facilitate the rapid and specific delivery of therapeutic agents to endothelial cells. We investigated whether targeting of an antioxidant enzyme, catalase, to the pulmonary endothelium alleviates oxidative stress in an in vivo model of lung transplantation. Intravenously injected enzymes, conjugated with an antibody to platelet-endothelial cell adhesion molecule-1, accumulate in the pulmonary vasculature and retain their activity during prolonged cold storage and transplantation. Immunotargeting of catalase to donor rats augments the antioxidant capacity of the pulmonary endothelium, reduces oxidative stress, ameliorates ischemia-reperfusion injury, prolongs the acceptable cold ischemia period of lung grafts, and improves the function of transplanted lung grafts. These findings validate the therapeutic potential of vascular immunotargeting as a drug delivery strategy to reduce endothelial injury. Potential applications of this strategy include improving the outcome of clinical lung transplantation and treating a wide variety of endothelial disorders.

Animals↗

Recipient intramuscular administration of naked plasmid TGF-beta1 attenuates lung graft reperfusion injury.

BACKGROUND: Gene therapy may be an effective strategy for modulating lung graft ischemia-reperfusion injury. We investigated whether recipient intramuscular (IM) naked plasmid gene transfer of transforming growth factor beta1-active (TGF-beta1-active) ameliorates lung graft ischemia-reperfusion injury. METHODS: Preliminary studies in F344 rats demonstrated that gastrocnemius muscle transfection of TGF-beta1-active produced muscle and plasma protein expression at 24 and 48 hours after transfection. Recipients (n = 8) received IM injection of naked plasmid-encoding chloramphenicol acetyl transferase (CAT), TGF-beta1-latent or TGF-beta1-active, respectively, at 24 or at 48 hours before left lung transplantation. We did not treat the control group before transplantation (18-hour cold ischemia). Donor lungs were flushed with low-potassium dextran-1% glucose and stored for 18 hours at 4 degrees C. All groups were killed at 24 hours after transplantation. Immediately before killing the animals, we clamped the contralateral right hilum and assessed graft function. We measured wet-to-dry ratio (W/D), myeloperoxidase, pro-inflammatory cytokines (interleukin 1 [IL-1], tumor necrosis factor alpha [TNF-alpha], interferon-gamma [INF-gamma], and IL-2) and performed immunohistochemistry. RESULTS: Arterial oxygenation was greatest in the recipient group transfected with TGF-beta1-active at 24 hours before transplantation compared with CAT, TGF-beta1-latent, and 18-hour cold ischemia groups (p < 0.01). The W/D ratio and myeloperoxidase decreased in both 24- and 48-hour groups, with TGF-beta1-active compared with CAT, and 18-hour cold ischemia groups (W/D, p < 0.02 and p < 0.004, respectively; myeloperoxidase, p < 0.05 and p < 0.01, respectively). All pro-inflammatory cytokines decreased in the 24-hour TGF-beta1-active group compared with CAT, TGF-beta1-latent, 18-hour and 1-hour cold ischemia, and non-treated lung groups (IL-1beta, p < 0.03; TNF-alpha, p < 0.02; IFN-gamma, p < 0.001; IL-2, p < 0.0001). In 24- and 48-hour groups with TGF-beta1-active, immunohistochemistry showed marked staining of Type I and Type II alveolar cells and of macrophages from the apical to the caudal sections of the lung grafts. CONCLUSIONS: Recipient IM administration of naked plasmid encoding TGF-beta1-active before transplantation ameliorates lung isograft reperfusion injury after prolonged ischemia.

Animals↗

Infectious necrotizing esophagitis: outcome after medical and surgical intervention.

BACKGROUND: Immunodeficiency predisposes to invasive esophageal infections. The treatment of perforation, respiratory fistula, and necrosis due to transmural esophageal infection is guided by anecdote. We wish to determine treatment and outcome of local complications of necrotizing esophagitis. METHODS: We report our experience over a 7-year period and review published reports since 1976. We treated 4 patients and found 21 reported patients with perforation (11/25), fistula (8/25), and necrosis (6/25) at a mean age of 35 years. Twenty-one patients were immunodeficient (84%) due to acquired immunodeficiency syndrome in 8, acute leukemia in 6, renal transplant in 3, diabetes mellitus, renal failure, and corticosteroids in 1 each. Pathogenic organisms were fungal in 15 cases, viral in 7, and bacterial in 7. RESULTS: Treatment consisted of antibiotic therapy in 13 patients and surgical intervention combined with antibiotic therapy in 12: esophagectomy in 6, esophageal stenting and drainage in 2, drainage alone in 2, and salivary diversion in 2. Overall mortality was 48% (12/25). Mortality without surgical intervention was 90% (9/10) and with surgical intervention 27% (3/11). One of 6 patients undergoing esophagectomy (17%) died. The difference in mortality was due to sepsis, which was the cause of death in 8 patients treated with medical intervention and only 1 treated with surgical intervention. CONCLUSIONS: Local complications of necrotizing esophagitis have a high mortality due to sepsis. Surgical intervention, in particular esophagectomy, controls sepsis in published case reports and should be considered in selected patients. Further study is required to determine the true prevalence of these complications and the outcome of intervention.

Adult↗