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PubMed1997

[Artificial pressure increase in subcutaneous abscess with evidence of general systemic reaction].

Abscess is customarily thought of as a collection of a large number of microorganisms, inflammatory cells and necrotic debris separated from the surrounding tissue by a fibrous capsule. Modern work focussed attention on more physico-chemical parameters in abscess pathogenesis. Recent experiences from animal models underline the impact of abscess pressure and bio-physicochemical parameters in the "abscess compartment" for systemic spreading. Artificial raising of abscess-pressure in pigs up to 80 mmHg was followed by increase of temperature and heartbeat rate and decrease of median arterial pressure. Elevated levels of TNF alpha, IL-1 and positive blood cultures support the theory of abscess pressure as a most important variable in abscess formation. We conclude that abscess pressure may play a pivotal role in systemic spreading of the primarily localized process.

Abscess↗
PubMed2005

Pyogenic liver abscesses with Escherichia coli: etiology, clinical course, outcome, and prognostic factors.

BACKGROUND: To investigate the clinical characteristics, outcome, and prognostic factors related to mortality in patients with Escherichia coli liver abscess. METHODS: We retrospectively analyzed 72 patients aged 18 years and older who were diagnosed as having E. coli liver abscesses from July 1996 to June 2002 at two medical centers in Taiwan. RESULTS: The overall mortality rate was 26.4%. The majority of E. coli liver abscesses was solitary, involved the right lobe of the liver, and comprised polymicrobial infections. The cause of the liver abscess involved the biliary system in 48 patients (66.7%). The most common concomitant diseases were diabetes mellitus (30.6%) and underlying malignancy (30.6%). Metastatic infection was found in 4 patients (5.6%). Multivariate analysis revealed that underlying malignancy (p = 0.034), profound hypoalbuminemia (<2.5 g/dl) (p = 0.008), and multiple abscesses (p = 0.004) were the most significantly prognostic factors for mortality. CONCLUSION: The predominant causes of E. coli liver abscess were biliary diseases. This report also highlights that E. coli liver abscess has a relatively high mortality rate, which is associated with underlying malignancy, multiple abscesses and profound hypoalbuminemia.

Adolescent↗
PubMed2001

Liver abscess in patients with cirrhosis of the liver: a 12-year experience.

PURPOSE: Liver abscess is rare in patients with cirrhosis of the liver. The aim of this retrospective study was to investigate the incidence, clinical presentation, causal pathogens, and outcome of liver abscess in cirrhotic patients. METHODS: We collected 21 liver abscess specimens (from 14 male patients and 7 female patients; Child A: B: C, 4: 7: 10) from 22,731 admissions of 6450 cirrhotic patients, from 1986 through 1998. RESULTS: The common clinical symptoms and signs included fever, chills, and abdominal tenderness. The major predisposing factors were biliary tract disease (52%) and diabetes mellitus (48%). The diagnosis rate with abdominal ultrasonography was 79%. Gram-negative aerobes were the predominant pathogens (Klebsiella pneumoniae, 66.7%; Escherichia coli, 23.8%), and occurred in 80% and 69% of blood and pus cultures, respectively, while 38% of cases showed polymicrobial pathogens. The location of the abscess was predominantly in the right lobe (71.4%), and 47.6% of patients had multiple abscesses. Six patients died (all with Child C cirrhosis). The overall mortality rate was 28.6% (6/21). CONCLUSIONS: The incidence of liver abscess in the cirrhotic patients was low, at 0.09% (21/22,731 admissions). The clinical presentations and pathogens were not different from those in noncirrhotic patients, except that in our cirrhotic patients, there was no significant difference in mortality between those with monomicrobial and those with polymicrobial abscess: nor was there a significant difference in mortality between those with single and those with multiple abscesses. The Child C patients were the high-risk group.

Adult↗
PubMed2002

Xanthogranulomatous cholecystitis with a liver abscess and metastatic endophthalmitis: report of a case.

There have been no reported cases of xanthogranulomatous cholecystitis with a liver abscess and metastatic endophthalmitis in the literature. There has been only one other case of xanthogranulomatous cholecystitis associated with a liver abscess in Japan prior to the present report. A 53-year-old man was admitted to a local hospital complaining of high fever. Abdominal ultrasonography and computed tomography showed a liver abscess. After percutaneous transhepatic abscess drainage, he complained of an abnormal sensation in his left eyeball and was diagnosed to have endophthalmitis. After being treated for the endophthalmitis, he was referred to our hospital to have the liver abscess evaluated. Endoscopic retrograde cholangiopancreatography showed a normal biliary system without any communication with the liver abscess. Two weeks after endoscopic retrograde cholangiopancreatography he complained of right hypochondralgia. Ultrasonography revealed the presence of sludge in the swollen gallbladder. Under a diagnosis of cholecystitis with a liver abscess, a cholecystectomy was performed. A histological examination indicated xanthogranulomatous cholecystitis based on the findings of a granulomatous lesion consisting of foamy cells in the gallbladder wall. We herein present the first known case of xanthogranulomatous cholecystitis with a liver abscess and metastatic endophthalmitis, while also making a review of the literature.

Cholangiopancreatography, Endoscopic Retrograde↗
PubMed2007

Retrospective analysis of 49 cases of brain abscess and review of the literature.

The case records of 49 patients discharged from St George's Hospital, London, between December 2000 and March 2004 with the diagnosis of brain abscess were reviewed in order to document the epidemiology, causes, treatment, and prognostic factors associated with brain abscess. Brain abscess occurred at all ages, more frequently in men than in women. Headache and altered mental status were common presenting symptoms. The frontal lobe was the most common site. Streptococcal infection was seen most commonly, but staphylococcal infection predominated in cases following neurosurgery. Computed tomography provided sufficient diagnostic information in most cases. All but five patients had early surgical drainage. Cefotaxime and metronidazole were used most often for empirical therapy. Thirty-nine patients recovered fully or had minimal incapacity. Five patients died. Patients with underlying cranial neoplasms or medical conditions had a worse outcome than those with a contiguous focus of infection or post-traumatic abscess. Changes in disease pattern were determined by comparison to a literature review. A PubMed search of the literature using the keywords "brain abscess" was undertaken, and identified papers and relevant citations were reviewed. Compared to earlier series, there was a marked decrease in the number of cases of brain abscess secondary to otitis media and congenital heart disease. There was an increase in the number of cases of brain abscess secondary to neurosurgery and trauma. Changes in the epidemiology of predisposing conditions for brain abscess are associated with changes in the patient population and causative organisms. Though still a potentially fatal infection, there have been recent improvements in diagnosis, treatment, and outcome.

Adolescent↗
PubMed2003

CT-guided stereotactic aspiration of brain abscesses.

The effective treatment of intracranial abscess remains controversial. Progress in technology, linked with the development of neuronavigational systems, has made stereotactic aspiration and drainage of intracerebral abscesses effective and valid alternatives to traditional methods, namely, conservative medical treatment or open surgical excision. Between 1995 and 2002, 12 patients at our hospital underwent drainage of intracerebral abscesses under stereotactic guidance. Ten patients had solitary lesions and two had multiple abscesses. The appropriate antibiotic schemes were administered following culture of the aspirated material. The size of the abscess, the mass effect, and response to antibiotic treatment were followed up by repeated CT scans. All patients showed improvement and, at the end of treatment, returned to their previous activities. There were neither deaths nor any postoperative complication. A second aspiration was required in one patient due to recurrence of the abscess. The CT-guided stereotactic aspiration of brain abscesses helps achieve all treatment goals. It drains the contents of the abscess, reduces mass effect, and confirms diagnosis. It is minimally invasive, carries minimal morbidity and mortality, and can be performed on compromised patients under local anesthesia.

Adult↗
PubMed1982

Intraabdominal abscess in Crohn's (ileo) colitis.

Operations for intraabdominal abscess were performed in 46 (20 percent) of 230 patients with Crohn's colitis and ileocolitis treated at the Mount Sinai Hospital during the decade 1964 to 1974. Internal and external fistulas, intestinal obstruction, and abdominal mass occurred significantly more often in patients with intraabdominal abscess, while only overt bleeding was significantly less common. Abscesses were equally divided between 23 patients who had undergone previous surgery and 23 cases of spontaneous onset. IN ileocolitis, the most frequent site of origin was the terminal ileum with right lower quadrant abscess, as opposed to a sigmoid origin in colitis with presentation in the left lower quadrant. There was no mortality among 24 patients treated with simple drainage, usually for superficial abscess, but enterocutaneous fistulas persisted in 5 of these patients (21 percent). Four of 11 patients (35 percent) died after undergoing bypass or ileostomy diversion. Among the 31 patients surviving either of these procedures, 18 (60 percent) required subsequent resection of the diseased bowel. By contrast, among 11 patients treated with primary en bloc resection plus drainage, there was only 1 death (9 percent) and no abscess recurrence or chronic enterocutaneous fistula formation during a follow-up period of 1 to 4 years. The high mortality rate after bypass may be explained by the more serious nature of the disease and the preexisting deep intraabdominal abscess and postoperative sepsis. Simple extraperitoneal drainage is a safe procedure associated with an extremely low mortality; however, when feasible, resection of the diseased bowel seems to be the treatment of choice for abscess in patients with Crohn's colitis and ileocolitis.

Abdomen↗
PubMed1996

Long-term results of operation for paravalvular abscess.

BACKGROUND: Operation for infective endocarditis with paravalvular abscess is reportedly associated with high mortality and morbidity rates. In an attempt to improve surgical outcome, an approach of radical resection of the abscess and inflamed tissues and reconstruction of the heart with either fresh or glutaraldehyde-fixed bovine pericardium was adopted by two surgeons at our institution. METHODS: From 1979 to 1995, 70 consecutive patients with active infective endocarditis and paravalvular abscess underwent operation. Their mean age was 49 years (range, 16 to 75 years), and 50 patients (71%) were men. Thirty-four patients had native and 36 had prosthetic valve endocarditis (8 had had composite replacement of the aortic valve and ascending aorta). Most patients (78%) were in New York Heart Association functional class IV. The principal indication for operation was cardiogenic or septic shock in 11 patients, or one or more of the following: persistent sepsis despite adequate antibiotic therapy in 36, congestive heart failure in 31, and recurrent emboli in 16. Staphylococci were responsible for the infection in 37 patients (53%). The abscess was in the mitral annulus in 11 patients, in the aortic root in 44, and in the aortic root and at least one other annulus in 15. After wide resection of the abscess, we reconstructed the heart and annuli with autologous or bovine pericardium. Mechanical heart valves were implanted in 36 patients, bioprostheses in 30, and aortic homografts in 2; valve repair was possible in 2. Sixteen patients required composite replacement of the ascending aorta and aortic valve. RESULTS: There were 9 operative deaths (13%). Infections caused by staphylococci and infections in multiple annuli were associated with increased operative mortality rates. Only 1 patient had persistent infection and required reoperation. The mean follow-up was 56 +/- 40 months. There were 12 late deaths, mostly cardiac. The actuarial survival including operative deaths was 64% +/- 8% at 8 years. In 8 patients, recurrent infective endocarditis developed 10 to 102 months after operation. The freedom from recurrent endocarditis was 76% +/- 10% at 8 years. CONCLUSIONS: This experience indicates that radical resection of the abscess and reconstruction of the heart with pericardium yield an excellent chance of eradicating the infection in patients with infective endocarditis and paravalvular abscess. The type of valve implanted may not be as important as radical resection of the abscess. These patients appear to have a greater than average risk of recurrent endocarditis.

Abscess↗
PubMed1995

CD4+ T cells mediate preexposure-induced increases in murine intraabdominal abscess formation.

We have previously shown that an increased number of Escherichia coli/Bacteroides fragilis intraabdominal abscesses are produced in mice after preexposure to small numbers of live E. coli or B. fragilis. Splenic lymphocyte subset changes and the importance of different elements of the immune response in this system were studied. Preexposure to bacteria induced a significant increase in the percentage of splenic T cells without altering the CD4/CD8 ratio. The passive transfer of either 10(7) mixed splenic lymphocytes, 5 x 10(6) mixed T cells, or 2.5 x 10(6) CD4+ T cells from preexposed animals to naive siblings 24 hr prior to abscess induction resulted in increased abscess formation. Transfer of serum, B cells, < 10(7) lymphocytes, CD8+ T cells, or any cell type from naive animals did not change abscess number. The bacterial composition of abscesses changed only in animals receiving either serum or B cells from donors preexposed to B. fragilis, where an increased number of B. fragilis per abscess was found. The CD4+ T cell response can be altered by transient infections and is critical to subsequent abscess formation, and a concurrent humoral response may play a role in determining an abscess' ultimate bacterial composition.

Abdominal Abscess↗
PubMed1993

Abscess scintigraphy with 99mTc-human immunoglobulin (IgG) using a one-step labeling method.

It was shown earlier that non-specific human gamma globulin (IgG) labeled with 111In can be used as an agent for abscess localization. We describe experimental results with 99mTc-IgG in animals bearing abscesses and tumors using a one-step labeling method with 99mTc. We studied this compound in several animal models: mice bearing turpentine abscesses and subcutaneously transplanted sarcomas, in rats with turpentine or E. coli abscesses and intracerebrally implanted gliomas and in rabbits with E. coli or turpentine abscesses. Blood clearance was studied in dogs. It was found that the absolute concentration of 111In-IgG in abscess and tumor was higher than that of 99mTc-IgG. However, the abscess-to-tumor ratio was higher for 99mTc-IgG. The 99mTc-IgG images were of high quality and abscesses could be detected as early as 30 min post-injection (p.i.). It appears that 99mTc-IgG has many potential advantages over 111In-IgG because of better physical properties of 99mTc, simpler preparation, lower cost and greater availability and the possibility of using higher 99mTc doses.

Abscess↗
PubMed2005

Management of lactational breast abscesses.

The purpose of the present prospective study was to compare incision and drainage against needle aspiration for the treatment of breast abscesses in lactating women. During the 3-year study period, patients with breast abscesses were randomized 1:1 to undergo either incision and drainage (23 patients) or needle aspiration (22 patients). Ultrasound guidance was not used for any of these patients. Age, parity, localization of abscess, whether or not nipples were cracked, duration of symptoms and lactation, abscess diameter, pus culture results, breast infection history during any previous period of lactation, healing time, recurrence, cosmetic outcome in the case of incision and drainage, and volume of pus removed and number of aspirations needed in the case of aspiration were recorded. The treatment value of each of these techniques was investigated. Student's t-test, Fisher's exact test, a Chi-square test and the Mann-Whitney U-test were used for statistical analysis. In the incision and drainage group all patients were treated successfully, but 1 patient (4%) had a recurrence 2 months after complete healing and 16 patients (70%) in this group were not pleased with the cosmetic outcome. In the needle aspiration group, overall 3 patients were treated with a single aspiration and 10 patients (45%) with multiple aspirations, but 9 patients (41%) did not heal following needle aspiration and subsequently required incision and drainage in addition. No recurrences were observed in the needle aspiration group during the follow-up period. The risk factors for failure of needle aspiration for breast abscesses were abscesses larger than 5 cm in diameter, unusually large volume of aspirated pus, and delay in treatment. In conclusion, breast abscesses smaller than 5 cm in diameter on physical examination can be treated with repeated aspirations with good cosmetic results. Incision and drainage should be reserved for use in patients with larger abscesses.

Abscess↗
PubMed2006

Surgical treatment of paravalvular abscess: long-term results.

OBJECTIVE: To examine the outcomes of surgery for active infective endocarditis with paravalvular abscess. METHODS: Paravalvular abscess was defined as infective necrosis of the valve annulus that required patch reconstruction before implanting a new valve. Of 383 patients with active infective endocarditis who underwent surgical treatment, 135 (35%) had paravalvular abscess. Patients' mean age was 51+/-16 years and 68% were men. The infected valve was native in 69 patients and prosthetic in 66. The abscess involved the aortic annulus in 73 patients, the mitral annulus in 27, the aortic and mitral annuluses in 33, and the aortic and tricuspid and/or pulmonary annuluses in 2. Surgery consisted of radical resection of the abscess, reconstruction of the annulus with patches and valve replacement. Mean follow-up was 6.2+/-5.2 years and complete. RESULTS: There were 21 (15.5%) operative deaths. Preoperative shock and abscess in the aortic and mitral annuluses were independent predictors of operative death. There were 34 (25%) late deaths. Survival at 15 years was 43+/-6% for all patients, 50+/-8% for native valve endocarditis and 35+/-9% for prosthetic (p=0.41). Age by increments of 5 years and recurrent endocarditis were independent predictors of late death. There were 16 episodes of recurrent endocarditis in 15 patients, and the freedom from recurrent endocarditis was 82+/-4% at 15 years. Fifteen reoperations were performed in 14 patients. Freedom from reoperation was 72+/-9% at 15 years. CONCLUSIONS: Surgery for active endocarditis with paravalvular abscess was associated with high operative mortality, particularly in patients in shock and abscess of both mitral and aortic annuluses. Long-term survival was adversely affected by age and recurrent bouts of endocarditis.

Abscess↗
PubMed2006

The usefulness of CT guided drainage of abscesses caused by retained appendicoliths.

OBJECTIVES: To determine the utility of percutaneous computed tomography (CT) guided drainage of abscesses formed secondary to retained appendicoliths. MATERIALS AND METHODS: A retrospective review was conducted over a 5-year period to identify patients who underwent CT guided drainage of abscesses related to retained appendicoliths. Inclusion criteria were a history of prior proven appendicitis treated by laparoscopic appendicectomy, identification of a post-operative abscess related to a visualised retained appendicolith and initial treatment by CT guided drainage. Data regarding initial technical success as well as long-term outcome was recorded in each case. RESULTS: In total, five patients were identified who underwent CT guided abscess drainage related to retained appendicoliths. There were three males and two females (age range 12-54 years). Initial drainage under CT guidance was technically successful in all cases with successful catheter placement and resolution of the abscess cavity. In all five cases however, there was recurrence of abscess formation following catheter removal. In one case, a second attempt with CT guided drainage was performed. Again this was initially successful with abscess recurrence following catheter removal. In all five cases, formal surgical drainage with removal of retained appendicolith resulted in a successful outcome. CONCLUSION: CT guided percutaneous drainage of intra abdominal abscess secondary to retained appendicoliths is only successful in the short term. Formal surgical drainage and removal of the appendicolith is required for long-term success.

Abscess↗
PubMed2006

Abdominal computed tomography for postoperative abscess: is it useful during the first week?

While classic teaching dictates computed tomography (CT) for postoperative abdominal or pelvic abscess in the first week is of low yield, little evidence supports intentional delays in imaging for suspected abscess. This retrospective review examined all CT scans obtained for clinical suspicion of abscess between 3 and 30 days after abdominal or pelvic operation over a 3-year period. Scans were grouped into those obtained between 3 and 7 days after surgery (EARLY) and those obtained after day 7 (LATE). Diagnostic yield was compared between EARLY and LATE groups. Of 262 CT examinations (EARLY, n = 106; LATE, n = 156), 71 studies (27%) demonstrated abscess. There was no significant difference in the diagnostic yield of CT for abscess between EARLY and LATE groups (23% [24 of 106] versus 30% [47 of 156], P = 0.18). Of patients with an abscess, 63% (45 of 71) underwent percutaneous or operative drainage (EARLY 75% [18 of 24], LATE 57% [27 of 47], P = 0.15). Abdominal CT for postoperative abscess can be expected to be diagnostic in a substantial proportion of cases in the first week, the majority of which lead to percutaneous or operative drainage. Postoperative CT for intra-abdominal abscess should be obtained as clinically indicated, regardless of interval from surgery.

Abdominal Abscess↗
PubMedDate not supplied

Methicillin-resistant Staphylococcus aureus prosthetic aortic valve endocarditis with paravalvular abscess treated with daptomycin.

Prosthetic valves have been used extensively for severe cardiac valvular dysfunction for the past 3 decades. Prosthetic cardiac valves may be infected with organisms causing bacteremia, particularly gram-positive cocci. Staphylococcus epidermidis (coagulase negative staphylococci) and Staphylococcus aureus , both methicillin-susceptible S. aureus and methicillin-resistant S. aureus (MRSA) strains, are the most frequent pathogens causing prosthetic valve endocarditis (PVE). Vancomycin has been the cornerstone of therapy for serious MRSA infections including bacteremia and endocarditis. Clinicians have noted that MRSA bacteremias treated with vancomycin often fail to clear even with prolonged therapy. Persistent or prolonged MRSA bacteremia unresponsive to vancomycin therapy has led to the treatment of these infections by other agents, that is, quinupristin, dalfopristin, linezolid, or daptomycin. These antibiotics have been found particularly useful in treating MRSA bacteremias unresponsive to vancomycin therapy. We report a case of a patient who presented with MRSA PVE complicated by perivalvular aortic abscess with persistent MRSA bacteremia unresponsive to vancomycin therapy. The patient's MRSA bacteremia was cleared with daptomycin therapy (6 mg/kg/d). Because the patient refused surgery, daptomycin therapy was continued in hopes of curing the endocarditis and sterilizing the perivalvular aortic abscess. Transesophageal echocardiogram revealed a decrease in abscess in the aortic perivalvular abscess after 1 week of daptomycin therapy. The patient made an uneventful recovery. The cure of PVE and perivalvular abscesses usually requires removal of the prosthetic device and abscess drainage. In this case, in which surgery was not an option, medical therapy of PVE and a decrease in size of the aortic perivalvular abscess were accomplished with daptomycin therapy. Daptomycin is an alternative to vancomycin therapy in patients with prolonged or persistent MRSA bacteremia secondary to endocarditis or abscess.

Abscess↗
PubMed2006

Cryptogenic invasive Klebsiella pneumoniae liver abscess syndrome.

BACKGROUND: Klebsiella pneumoniae-associated liver abscesses have distinct clinical and epidemiologic features. METHODS: We report the unusual case of an American patient with a K. pneumoniae-associated liver abscess and septic spread to other organs. We additionally present a comprehensive review of K. pneumoniae-associated liver abscess syndromes in adults. RESULTS: We identified three distinct K. pneumoniae liver abscess syndromes: the polymicrobial liver abscess, the monomicrobial cryptogenic noninvasive liver abscess, and the monomicrobial cryptogenic invasive K. pneumoniae-associated liver abscess (CIKPLA) syndromes, with distinct clinical, epidemiologic and outcome features. CIKPLA syndrome typically affects diabetic patients, mainly in Southeast Asia, and is complicated by septic spread to other organs. CONCLUSIONS: The community-acquired, monomicrobial, K. pneumoniae-associated liver abscess syndromes that typically occur in the USA are mainly noninvasive and affect Asian or Hispanic persons. However, this report provides an alert that CIKPLA syndrome can occur in North America, and physicians need to be aware of it.

Adult↗
PubMed2006

[Pyogenic psoas abscess: six cases and review of the literature].

PURPOSE: Psoas abscess is a rare disease in developed countries. Its diagnosis is difficult and any delay could lead to a worsen prognosis. The aim of this study is to determine the best diagnostic and therapeutic practices. METHODS: A retrospective study of psoas abscess that occurred during six months was performed. RESULTS: Six cases of secondary psoas abscess are reported. They were associated with spondylodiscitis in three cases, arthritis and gynaecologic infection in the three remaining cases. Anatomic diagnosis was performed by tomodensitometry. Microbiologic diagnosis was obtained by blood culture or direct puncture of the abscess. Antibiotics were associated with percutaneous drainage in two cases, with simple puncture in one case, and with surgery in one case. A local improvement w observed in all cases. The oldest patients presented the worst complications which were not directly caused by the abscess. CONCLUSION: Physicians must be aware of psoas abscess because of their increasing incidence. Despite the fact that digestive pathologies are the main cause of secondary psoas abscess, bone infections, particularly spine infections, should be taken into consideration. Tomodensitometry guided puncture or percutaneous drainage are of diagnostic and therapeutic interest. Infectious samples must be taken before starting antibiotics, which have to be efficient against Gram negative bacillus, anaerobes and Staphylococcus aureus. Surgery must be quickly performed when the primary infection localisation need it, in case of voluminous abscess or when antibiotics and drainage are inefficient.

Adult↗
PubMed2002

Can failure of percutaneous drainage of postoperative abdominal abscesses be predicted?

BACKGROUND: Percutaneous drainage (PD) of complex postoperative abscesses associated with a variety of factors such as multiple location or enteric fistula remains a matter of debate. Accordingly, this retrospective study was designed to determine the predictive factors for failure of PD of postoperative abscess, in order to better select the patients who may benefit from PD. METHODS: From 1992 to 2000, the data of 73 patients who underwent computed tomography (CT)-guided PD for postoperative intra-abdominal abscess, were reviewed. PD was considered as failure when clinical sepsis persisted or subsequent surgery was needed. The possible association between failure of PD and 27 patient-, abscess-, surgical-, and drainage-related variables were assessed using univariate and multivariate analysis. RESULTS: Successful PD was achieved in 59 of 73 (81%) patients. The overall mortality was 3% but no patient died after salvage surgery. Multivariate analysis showed that only an abscess diameter of less than 5 cm (P = 0.042) and absence of antibiotic therapy (P = 0.01) were significant predictive variables for failure of PD. CONCLUSIONS: CT-guided PD associated with antibiotic therapy could be attempted as the initial treatment of postoperative abdominal abscesses even in complex cases such as loculated abscess or abscess associated with enteric fistula.

Abdominal Abscess↗