Splenic abscess: sonographic diagnosis and percutaneous drainage or aspiration

Splenic abscesses in the new millenium - a systematic review

BACKGROUND

Isolated splenic abscesses are rare, but increasingly reported with newer organisms and changes in mechanisms involved. We conducted a comparative review of publications from 1900-1977, 1977-1986, 1987-1995, and 1996-2022.

METHODS

A systematic search in Embase and PubMed resulted in 522 publications (1111 cases). Data was tabulated, analysed, and compared.

RESULTS

Patient demographics and symptoms remain unchanged although more Asian patients were reported. Metastatic infections remain the main cause, but COVID-19-linked and iatrogenic causes post bariatric surgery and splenic artery embolization are increasingly reported. Aerobic organisms remain the commonest (68%), with a variety of exotic organisms reported. Splenectomy remains the definitive treatment, although antibiotics only and percutaneous aspiration/catheter-drainage are increasingly used with reasonable outcomes, with salvage splenectomy for therapeutic failures not having significantly higher mortality than upfront splenectomy.

CONCLUSIONS

Isolated splenic abscesses continue to be uncommon, with diagnosis requiring a high degree of suspicion. Non-surgical options for treatment can sometimes be definitive.

Splenic Abscesses in the Pediatric Population: A Literature Review of an Uncommon Entity

Splenic abscess in the pediatric population is a rare but serious condition. Its incidence is reported to be between 0.05% and 0.7%. Splenic abscess is an infectious suppurative process with a discernible macroscopic filling defect in the subcapsular space or spleen parenchyma. Causes include bacterial infection through the hematogenous route or from locoregional spread such as the gastrointestinal tract, septic emboli, trauma, sickle cell anemia, and malarial infestation. Diagnosis is often delayed due to non-specific signs and symptoms. Symptoms include fever, abdominal pain, and palpable left upper abdominal swelling. Ultrasound and cross-sectional imaging such as CT scans are useful for the diagnosis of splenic abscess but contrast-enhanced CT scans are considered the gold standard because of their high sensitivity and specificity. Treatment options range from antimicrobial therapy, percutaneous drainage, and aspiration to surgical interventions such as splenectomy. As it has a high mortality rate, prompt diagnosis and appropriate treatment are essential for optimal outcomes.

Splenic Abscess in an Adolescent due to Salmonella enterica Conservatively Treated with Ultrasound-Guided Fine-Needle Aspiration

Background

Splenic abscesses are rare and potentially fatal. Diagnosis is often delayed due to vague symptoms, and laboratory findings are varying and often nonspecific. Ultrasound and computed tomography have a high sensitivity in detecting splenic abscesses. Splenectomy was previously considered the gold standard for treatment, but in recent years, a shift has been seen towards a more conservative approach, i.e., ultrasound-guided aspiration or drainage in combination with adequate antibiotics in selected cases. Case Report. A previously healthy adolescent complained of left-sided chest pain, pain in the left clavicular region for three weeks, and recent fever. Ultrasound and computed tomography demonstrated an intrasplenic abscess. The patient was successfully treated with two percutaneous fine-needle punctures and adequate antibiotics for six weeks. Salmonella enterica serotype Poona was grown from the aspirate. At one-year follow-up, the patient remained healthy without signs of recurrence.

Conclusion

The present case report demonstrates that ultrasound-guided aspiration and subsequent treatment with antibiotics may be an effective alternative to splenectomy in patients with a splenic abscess.

Percutaneous drainage and staged valve replacement followed by laparoscopic splenectomy in infective endocarditis with splenic abscess

Splenic abscess is a severe complication of infective endocarditis. The need for splenectomy to control prosthetic valve infection remains controversial. Here, we present the case of a 49-year-old man who complained of fever and general fatigue. Blood cultures grew Group G Streptococcus, and intravenous antibiotics were started. Abdominal computed tomography showed splenic abscess; thus, percutaneous drainage was performed. Two-dimensional transthoracic echocardiogram revealed a mobile vegetation on the right coronary cusp of the aortic valve with mild aortic regurgitation. The patient underwent aortic valve replacement using a 23-mm SJM Regent mechanic valve, followed by laparoscopic splenectomy 3 days later. The patient was asymptomatic without recurrence of infection 13 months postoperatively. Current guidelines recommend that splenectomy should be performed first, followed by valve replacement. However, we performed valve surgery first because of the risk of embolism. Depending on the patient's condition, performing splenic drainage and valve replacement first may be considered.

Splenic Abscess Following Sleeve Gastrectomy: A Systematic Review of Clinical Presentation and Management Methods

BACKGROUND

Splenic abscess is a rare complication following sleeve gastrectomy.

METHODS

We performed a systematic review to clarify its clinical significance, presentation, and management. PubMed, Embase, MEDLINE, Google Scholar, and the Cochrane Library were searched up to the 19th of July 2020. A total of 18 patients were included, of which 11 were female and 7 were male. The mean age was 34.1 ± 12.3 years, and the mean body mass index was 45.8 ± 7.6 kg/m². Type 2 diabetes mellitus was reported in 11.1% of patients and hypertension in 22.2%. Fever was the most common presenting symptom seen in 17 (94.4%) patients, followed by abdominal pain in 10 (55.6%). The mean duration from surgery to presentation was 98.6 ± 132.7 days (range 10-547 days). Computed tomography was used for investigations in 17/18 (94.4%) patients. Seven patients had reported leak, three reported bleeding, and 2 reported pleural effusion. Thirteen patients had unilocular abscess. All patients were treated with antibiotics. Four patients needed total parenteral nutrition, and three were given proton pump inhibitor. In total, 11 patients needed percutaneous drainage as a part of treatment and 11 patients needed total splenectomy and 1 needed partial splenectomy.

CONCLUSION

Splenic abscess following sleeve gastrectomy is a rare identity. The etiology of formation of splenic abscess needs further studies. A computed tomography of the abdomen with contrast is the preferred diagnostic tool. There is no gold standard treatment for splenic abscess.

Asymptomatic Splenic Cysts in an Immunocompromised Patient: Should They Be Investigated

Splenic abscess is a rare disease that generally occurs in immunocompromised patients. It is difficult to distinguish between splenic abscesses and cysts using imaging studies, especially if they are asymptomatic. A 50-year-old asymptomatic man who had received steroid therapy for underlying rheumatoid arthritis was referred to a university hospital due to presence of several splenic cysts, with the largest being 3.5 cm in diameter. Percutaneous aspiration was performed, and fluid analysis showed cysts infected by extended-spectrum, beta-lactamase-producing Escherichia coli. The patient was treated with ertapenem for four weeks, and the lesion disappeared on follow-up imaging studies. Splenic abscess should be included as a differential diagnosis of splenic cystic lesions in immunocompromised patients.

Splenectomy and Valve Replacement in Patients With Infective Endocarditis and Splenic Abscesses

In patients with infective endocarditis (IE), splenic involvement is a rare but well-known adverse event. The treatment of patients with IE and splenic abscesses is still challenging and controversial. We report 3 patients with IE and splenic abscesses who underwent successful valve replacement and splenectomy. Our experience confirms that in such a patient, a valve operation combined with splenectomy can be performed with excellent results during the same hospitalization. The timing of splenectomy and the type of surgical approach should be based mainly on the stability of a patient's hemodynamic condition.

[Splenic abscesses: From diagnosis to therapy]

Splenic abscess is septic collection which occurs after haematogenous spread or local dissemination. Splenic abscess is an uncommon and rare condition, more frequently affecting male and immunocompromised patients. There are no guidelines regarding its diagnosis and management. Computed tomography (CT) scan is highly sensitive and specific (95% and 92%, respectively) in the diagnosis of splenic abscess. Diagnosis is based on blood cultures which are positive in 24 to 80% of cases. Bacterial growth culture of abscess after drainage is more efficient (50-80%) and can be performed after surgery or percutaneous drainage under imaging, including CT scan. Microorganisms involved are frequently enterobacteriaceae, gram-positive cocci and anaerobes. This particular ecology leads to an empiric broad-spectrum antibiotic therapy, with a variable duration, from 10days to more than one month. Management remains very close to the one applied in case of liver abscesses. The role of splenectomy in the prevention of recurrence remains controversial. We reviewed the literature regarding splenic abscesses, from diagnosis to therapy.

Splenectomy for E. coli abscess: A case report with a difficult preoperative diagnosis and unclear pathogenesis

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Difficult diagnosis due to the paucity of symptoms and atypical radiological findings.

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Primary site of infection was not detected.

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Splenectomy is the best therapeutic choice in case of splenic abscess.

Introduction

Isolated splenic abscess is a rare clinical condition and remains a diagnostic dilemma. Clinical presentation is non-specific and the diagnosis is often delayed. Ultrasonography and CT scan are the gold standard. The treatment is still controversial: antibiotic therapy, percutaneous drainage (PCD) or splenectomy.

Case presentation

We present the clinical case of a patient, admitted to our Department because of abdominal pain, without fever. The preoperative radiological assesment showed three intrasplenic liquid collections, whose differential diagnosis was made between hematic collection and abscess. The treatment was splenectomy. The samples of collected liquid were positive for Escherichia Coli.

Conclusion

In case of splenic abscess, splenectomy is the best therapeutic choice. The other therapeutical options like antibiotic therapy and PCD, can be used only in particular cases, but without the same efficacy.

[Pneumoperitoneum due to splenic abscess: a diagnostic challenge. Case Report]

BACKGROUND

Splenic abscess is a rare clinic entity, its incidence has increased due to the rising number of clinical conditions involving immunosuppression. Endocarditis is the most frequent cause, and gram-positive aerobes are the main causal agents. Its clinical presentation is non-specific and delays diagnosis. Computed tomography scan is the method of choice, and the treatment is based on antibiotics and drainage, radiological or surgical, involving splenectomy in special cases that require it.

CLINICAL CASE

A 55-year-old man with abdominal pain and fever. The analysis revealed leukocytosis 14,000/mm3, prothrombin activity 53%, and metabolic acidosis. Computed tomography scan showed a peri-hepatic pneumoperitoneum, liquid fluid, and peri-splenic bubbles, and slight trabeculation of fat around the duodenal bulb with pneumoperitoneum in this area. Patient underwent a median laparotomy, finding a purulent peritonitis due to a ruptured abscess in the spleen, splenectomy was performed. Fluid culture showed polymorphonuclears, with no microorganisms identified. The patient progressed and was discharged on the 5th post-operative day.

CONCLUSIONS

Splenic abscess is an uncommon condition, in which the diagnosis is delayed and mortality, in untreated patients, is high. Its association with pneumoperitoneum may confuse the diagnosis towards viscera perforation. Thus it must be suspected in the finding of unknown cause of pneumoperitoneum by complementary examinations. The treatment of choice is splenectomy, because the capsular rupture is the norm in all of them.

A rare case of splenic abscess with septic peritonitis in a German shepherd dog

BACKGROUND

Splenic abscess is a rare disease with only few reports in small-animal practice as well as in human medicine. It has been mostly reported in immunocompromised patients or following penetrating foreign bodies. This report aims to add to the current veterinary literature on recommended diagnostic tools for splenic abscess, as well as to provide follow-up findings after successful surgical treatment.

CASE PRESENTATION

An 8-year-old male German shepherd dog was admitted to the clinic for evaluation of fever, anorexia, and lethargy for the previous 3 days. During the physical examination, a mass was palpated in the left cranioventral abdomen. Diagnostic imaging including radiography and ultrasonography revealed the presence of a large mass in the spleen and signs of peritonitis. Laboratory tests reflected highly septic pyogranulomatous inflammation and, together with imaging findings, raised a high suspicion of splenic abscess and septic peritonitis. Therapy included complete splenectomy and placement of peritoneal drainage. Bacteriological examination revealed severe infection with Staphylococcus epidermidis and S. pseudintermedius. Histopathological evaluation of the mass confirmed the diagnosis of splenic abscess.

CONCLUSION

Early diagnosis of splenic abscess in small animals requires a high level of suspicion based on clinical and ultrasonographic findings. Immediate surgical intervention is preferable and confirms the diagnosis. Total splenectomy remains the most effective therapy. Although there are many predisposing factors for splenic abscess, the true etiology remains obscure.

A retrospective study of 75 cases of splenic abscess

Splenic abscess is an uncommon and life-threatening condition. Due to its nonspecific clinical picture, it remains a diagnostic challenge. Multiple radiological modalities are used for the diagnosis. In this retrospective study we analyzed 75 patients treated between 1999 and 2009. The patients were divided into three groups depending on the treatment received. Group I (n = 14) consisted of patients treated with only antibiotics, Group II (n = 19) patients were treated with percutaneous drainage and Group III (n = 42) with splenectomy. We tried to establish epidemiologic and clinical features and therapeutic options in splenic abscess. Our study suggests that percutaneous drainage is a safe and effective alternative to surgery especially in unilocular or bilocular abscesses thus allowing preservation of the spleen. It should be considered as the first line of treatment although splenectomy remains the final definitive procedure if percutaneous drainage fails.

Complications of percutaneous fluid drainage

Percutaneous abscess drainage is one of the most common and rewarding procedures performed by interventional radiologists. Technical success is immediately apparent by aspiration of purulent contents and is nearly always achieved, with rates exceeding 90% in most literature studies. Clinical success is typical even for many abscesses colonized with multidrug-resistant organisms. In patients presenting with sepsis, this procedure offers an immediate and minimally invasive solution to a life-threatening condition, often resulting in defervescence and restoration of hemodynamic stability within 1 to 2 days. Although complications of abscess drainage are uncommon, radiologists should be able to recognize and treat all adverse sequelae discussed in this article.

Splenic abscess: a single institution study and review of the literature

PURPOSE

The aim of this study was to review our experience with splenic abscesses, with respect to the relevant aspects of splenic abscesses and treatment outcomes.

MATERIALS AND METHODS

We reviewed the cases of 18 patients who had splenic abscesses and who were treated at our hospital from November 1993 to December 2008.

RESULTS

The most common symptom at presentation was abdominal pain in 12 patients (66.7%). The median duration from symptom onset until establishment of a diagnosis was 22 days. Streptococcus viridans was the most common pathogen (27.8%), follow by Klebsiella pneumoniae (22.2%). The mortality rate during the inpatient period and the previous 90 days was 16.6%. Three of four patients with Klebsiella pneumoniae showed a single abscess pocket. Four patients (22.2%) underwent percutaneous drainage, eight (44.5%) received antibiotic treatment only and six (33.3%) underwent splenectomy.

CONCLUSION

There is no gold standard for treating splenic abscesses. Treatment should be customized for each patient.

Management of splenic abscess: report on 16 cases from a single center

OBJECTIVES

Splenic abscess is an uncommon disease, with a reported incidence of 0.14-0.7% in autoptic series. The best treatment option remains unclear. We report our experience of percutaneous drainage of splenic abscess under ultrasound (US) guidance.

METHODS

From 1979 to 2005, 16 consecutive patients (12 male and four female; mean age 39.9 years, range 16-72 years) were diagnosed with splenic abscess by means of US, and were treated with medical therapy alone or combined with US-guided percutaneous aspiration or catheter drainage.

RESULTS

Ten of 16 patients had bacterial abscesses (including one case of tubercular abscess), two had an amebic abscess, and four had fungal abscesses. Seven of ten patients with bacterial abscesses were successfully treated with fine needle aspiration alone, one patient was successfully treated with fine needle aspiration for one abscess and catheter drainage for another, and one patient, who subsequently required a splenectomy for an abdominal trauma, successfully underwent percutaneous catheter drainage alone. Four patients with fungal lesions were treated with medical therapy alone, and two patients later required a splenectomy. One patient with a bacterial abscess due to endocarditis was treated with medical therapy alone, and his recovery was uneventful.

CONCLUSIONS

US-guided percutaneous aspiration of splenic abscesses is a safe and effective procedure. It can be used as a bridge to surgery in patients who are critically ill or have several comorbidities. Percutaneous aspiration may allow complete non-operative healing of splenic abscesses or temporize patients at risk for surgery.

Splenic abscess in an infant caused by Streptococcus intermedius

We report a 20-month-old girl with splenic abscess. The patient was admitted to our hospital because of persistent high fever and abdominal pain. Laboratory data showed leucocytosis and elevated C-reactive protein levels. Abdominal computed tomography showed multiple low-density lesions in the spleen. These findings were consistent with a diagnosis of splenic abscess. She was successfully treated with ultrasonographically guided percutaneous drainage for 11 days and intravenous antibiotic for 17 days. On culture, aspirated fluid from the abscess grew Streptococcus intermedius. This case illustrates that the differential diagnosis of unknown-focus infection in infants should include splenic abscess. We recommend conservative therapy (antibiotics and drainage) as first-line therapy for splenic abscess in pediatric patients, based on the importance of the immunological functions of the spleen.

Successful percutaneous ultrasound-guided drainage for treatment of a splenic abscess

We report a case of splenic abscess that was successfully treated with percutaneous ultrasound-guided drainage and without splenectomy. A 40-year-old woman was admitted to Nippon Medical School Hospital because of pyrexia and left upper quadrant pain, which had persisted despite antibiotic treatment. On admission, computed tomography demonstrated a low-density area in the spleen, which had been been seen on computed tomography 3 months earlier. Ultrasonography demonstrated a hypoechoic area in the spleen. Initial laboratory tests revealed a serum C-reactive protein concentration of 19.7 mg/dl and a white blood cell count of 15,800 /microl. The serum glucose concentration was 267 mg/dl, and the glycolated hemoglobin value was 7.7%. A splenic abscess was diagnosed and was treated with percutaneous drainage. Milky yellow fluid was obtained, and the patients left upper quadrant abdominal pain and pyrexia resolved. A culture of the drainage fluid yielded Escherichia coli. The drainage catheter was removed 12 days after insertion. The patient was discharged 6 days later. The splenic abscess has not recurred during 3 months of follow-up. Our results suggest that ultrasound-guided percutaneous drainage is a safe and effective alternative to surgery for the treatment of splenic abscess and allows preservation of the spleen.

Image guided percutaneous splenic interventions

AIM

The objective of this study is to evaluate the efficacy and safety of image-guided percutaneous splenic interventions as diagnostic or therapeutic procedures.

MATERIALS AND METHODS

We performed a retrospective review of our interventional records from July 2001 to June 2006. Ninety-five image-guided percutaneous splenic interventions were performed after informed consent in 89 patients: 64 men and 25 women who ranged in age from 5 months to 71 years (mean, 38.4 years) under ultrasound (n=93) or CT (n=2) guidance. The procedures performed were fine needle aspiration biopsy of focal splenic lesions (n=78) and aspiration (n=10) or percutaneous catheter drainage of a splenic abscess (n=7).

RESULTS

Splenic fine needle aspiration biopsy was successful in 62 (83.78%) of 74 patients with benign lesions diagnosed in 43 (58.1%) and malignancy in 19 (25.67%) patients. The most common pathologies included tuberculosis (26 patients, 35.13%) and lymphoma (14 patients, 18.91%). Therapeutic aspiration or pigtail catheter drainage was successful in all (100%) patients. There were no major complications.

CONCLUSIONS

Image-guided splenic fine needle aspiration biopsy is a safe and accurate technique that can provide a definitive diagnosis in most patients with focal lesions in the spleen. This study also suggests that image-guided percutaneous aspiration or catheter drainage of splenic abscesses is a safe and effective alternative to surgery.

Ultrasound guided percutaneous treatment for splenic abscesses: The significance in treatment of critically ill patients

AIM: To analyze the results of ultrasound guided percu-taneous needle aspiration (PNA) and percutaneous catheter drainage (PCD) in the treatment of splenic abscess.

METHODS: Thirty-six patients (14 females and 22 males, with an average age of 54.1 ± 14.1 years) with splenic abscess were treated with ultrasound guided PNA and/or PCD. Patients with splenic abscess < 50 mm in diameter were initially treated by PNA and those with abscess ≥ 50 mm and bilocular abscesses were initially treated by an 8-French catheter drainage. The clinical characteristics, underlying diseases, organism spectra, therapeutic methods, and mortality rates were analyzed.

RESULTS: Twenty-seven patients had unilocular and 9 bilocular abscess. PNA was performed in 19 patients (52.8%), and 8 of them (42.1%) required PCD because of recurrence of abscess. In 17 patients (47.2%), PCD was performed initially. PCD was performed twice in six patients and three times in two. PNA was definitive treatment for 10 and PCD for 21 patients. One patient with PCD was referred for splenectomy, with successful outcome. In all 4 deceased patients, malignancy was the underlying condition. Twenty-one patients (58.3%) underwent 33 surgical interventions on abdomen before treatment. Cultures were positive in 30 patients (83.3%). Gram-negative bacillus predominated (46.7%). There were no complications related to the procedure.

CONCLUSION: Percutaneous treatmnet of splenic abscess is an effective alternative to surgery, allowing preservation of the spleen. This treatment is especially indicative for the patients in critical condition postoperatively. We recommend PNA as primary treatment for splenic abscesses < 50 mm, and PCD for those ≥ 50 mm in diameter and for bilocular abscesses.

Computed tomography-guided percutaneous drainage of splenic abscesses

OBJECTIVE

The aim of the study is to evaluate the role of computed tomography (CT)-guided percutaneous drainage in the management of solitary splenic abscesses.

MATERIALS AND METHODS

Sonography and CT were used in the initial diagnosis of splenic abscess in patients with vague left upper quadrant pain and/or fever. Solitary splenic abscesses of nine male patients whose ages varied between 21 and 27 years (mean age: 24.7 years) were percutaneously drained under CT guidance. Puncture with 18-gauge Chiba needles and coaxial guidewire technique was used for insertion of six or eight French pigtail catheters. Antibiotics in accordance with the microbiological results were also given adjuvant to drainage. Follow-up examinations were performed by sonography, daily for the first week and weekly for the next 7 weeks, and by CT at the end of first, fourth and eighth weeks.

RESULTS

All patients tolerated the intervention well, except for one complicating with splenic rupture and hemorrhage, who underwent emergency splenectomy. The remaining eight patients recovered within 4 weeks without any splenic sequela. A mean of 3.9 days was needed before removing the drainage catheter based on regression criteria.

DISCUSSION AND CONCLUSION

CT-guided percutaneous drainage of splenic abscesses may be proven effective and is superior to splenectomy in selected cases, as it preserves host immunity.

Infective endocarditis: diagnosis, antimicrobial therapy, and management of complications: a statement for healthcare professionals from the Committee on Rheumatic Fever, Endocarditis, and Kawasaki Disease, Council on Cardiovascular Disease in the Young, and the Councils on Clinical Cardiology, Stroke, and Cardiovascular Surgery and Anesthesia, American Heart Association: endorsed by the Infectious Diseases Society of America

BACKGROUND

Despite advances in medical, surgical, and critical care interventions, infective endocarditis remains a disease that is associated with considerable morbidity and mortality. The continuing evolution of antimicrobial resistance among common pathogens that cause infective endocarditis creates additional therapeutic issues for physicians to manage in this potentially life-threatening illness.

METHODS AND RESULTS

This work represents the third iteration of an infective endocarditis "treatment" document developed by the American Heart Association under the auspices of the Committee on Rheumatic Fever, Endocarditis, and Kawasaki Disease, Council on Cardiovascular Disease of the Young. It updates recommendations for diagnosis, treatment, and management of complications of infective endocarditis. A multidisciplinary committee of experts drafted this document to assist physicians in the evolving care of patients with infective endocarditis in the new millennium. This extensive document is accompanied by an executive summary that covers the key points of the diagnosis, antimicrobial therapy, and management of infective endocarditis. For the first time, an evidence-based scoring system that is used by the American College of Cardiology and the American Heart Association was applied to treatment recommendations. Tables also have been included that provide input on the use of echocardiography during diagnosis and treatment of infective endocarditis, evaluation and treatment of culture-negative endocarditis, and short-term and long-term management of patients during and after completion of antimicrobial treatment. To assist physicians who care for children, pediatric dosing was added to each treatment regimen.

CONCLUSIONS

The recommendations outlined in this update should assist physicians in all aspects of patient care in the diagnosis, medical and surgical treatment, and follow-up of infective endocarditis, as well as management of associated complications. Clinical variability and complexity in infective endocarditis, however, dictate that these guidelines be used to support and not supplant physician-directed decisions in individual patient management.

Management of splenic abscess in children by percutaneous drainage

BACKGROUND/PURPOSE

Isolated splenic abscesses are rare in pediatric patients. The recommended treatment in the literature has been in favor of splenectomy, although conservative treatment with splenic preservation is being increasingly reported. We report successful management of 4 pediatric patients with splenic abscess by needle aspirations and antibiotics.

MATERIALS AND METHODS

Four children (aged 7-11 years; male-female, 3:1) were admitted in our institution with history of high-grade fever with chills, anorexia, left hypochondrial pain, and splenomegaly. One child was a known case of thalassemia, and one had a history of typhoid fever. The others did not have any predisposing condition. Ultrasonography (USG) and computed tomographic scan of the abdomen showed a solitary abscess in the spleen in 2 patients and multiple abscesses in the other 2. Ultrasonography-guided needle aspiration in 3 cases revealed purulent fluid, which, on culture, grew Escherichia coli in 1 case, Salmonella paratyphi A in 1 case, but sterile in 1 case. Blood culture was sterile in all the cases, but Widal's test was positive in 2 patients. Treatment protocol included USG-guided needle aspiration of pus along with intravenous ceftriaxone, metronidazole, and amikacin for 3 to 12 weeks.

RESULTS

All 4 patients showed a good response to conservative treatment. Serial USG showed gradual resolution of abscess, and none was subjected to splenectomy.

CONCLUSION

Isolated splenic abscess in children can be successfully treated with needle aspirations and intravenous antibiotics, thereby avoiding splenectomy.

Abscess of the spleen

Splenic abscess is a rare disease but with increasing frequency. The authors present 9 patients with splenic abscess treated at the Institute of Digestive System Diseases, Clinical Centre of Serbia, in a period from January 1, 1986 to May 15, 2004. Splenic abscess was the complication of septic endocarditis in 4, trauma in 2, dental infection in 1, while in 2 cases it was the complication of chemotherapy in myeloproliferative disorders. All 9 patients had fever, 7 - abdominal pain, 4 - left shoulder pain, and 1 patient had nausea and vomiting. Higher white blood count was found in 6 patients, pleural effusion in 4, elevated left hemidiaphragm in 1 and basal pneumonia in 1 patient as well. Ultrasonography and CT were the most reliable diagnostic procedures. CT was superior in diagnosis of multiple small abscesses. Culture of the pus recovered the Enterococcus in 3 cases, Streptococcus a hemolyticus in 1, Staphylococcus epidermidis and Candida albicans in 1, Staphylococcus aureus, E. Coli and Candida albicans in 1, Staphylococcus aureus and Salmonella enteritidis in 1 case. Eight patients underwent splenectomy and 1 was cured by combined antibiotics in high doses. One patient died postoperatively due to septic endocarditis that had been present before surgery. The authors believe that splenectomy and antibiotics administered according to drug susceptibility test as well as management of underlying disease are the method of choice for splenic abscess treatment. Conservative antibiotic treatment is indicated in selected cases only.

Splenic abnormalities: a comparative review of ultrasound, microbubble-enhanced ultrasound and computed tomography

The ultrasound appearances of abnormalities of the spleen are reviewed and images compared with computed tomography. Focal lesions, both benign and malignant, trauma, infarction and congenital abnormalities are presented. The use of microbubble ultrasound contrast media as an aid to identifying and characterizing abnormalities is discussed.

Splenic abscesses: review of 29 cases

Splenic abscess is an unusual and potentially life-threatening disease. Due to the nonspecific clinical picture, it remains a diagnostic challenge. Splenic abscess should be suspected in febrile patients with left upper quadrant tenderness and leukocytosis, and diagnosis confirmed based mostly on imaging studies, microbiologic and / or pathologic evidence, or by response to antibiotic or antifungal treatment. We present 29 cases of splenic abscess treated in our hospital from 1990 to 2001. There were 18 male patients (62%) and 11 female patients (38%). Ages ranged from 4 to 85 years, with a median of 44 years. There were five pediatric patients (17%) and 24 adults (83%). The most common associated condition was leukemia. Most patients were immunocompromised (72%). The more common signs and symptoms were fever (90%), chills (41%), abdominal pain (31%), and leukocytosis (38%). Ultrasonography of the abdominal cavity was positive in 27 cases (93%); computerized tomography or magnetic resonance imaging was used in 26 patients (90%) and was positive in all patients. The abscess was solitary in 21 cases (72%) and multiple in eight cases (28%). Positive blood cultures were found in only seven patients (24%). According to the literature, the treatment of choice is still splenectomy, but in our study, the success rate of 75% with antibiotics alone indicates that antibiotic therapy should be considered an important alternative treatment modality in patients not suitable for percutaneous drainage and splenectomy.

Percutaneous CT-guided drainage of splenic abscess

OBJECTIVE

The objective of our study was to determine the current role of percutaneous CT-guided drainage as an alternative to surgical treatment of splenic abscesses.

CONCLUSION

Splenic abscess is an uncommon entity that can be treated percutaneously. CT-guided drainage of splenic abscess seems to be a safe and effective alternative to surgery, allowing preservation of the spleen.

Splenic Abscess: Report of Six Cases and Review of the Literature

Splenic abscesses are rare but appear to be increasing in frequency. Recent advances in radiologic techniques have affected the diagnosis and management. The purpose of this study was to evaluate these effects. The medical records of one institution were retrospectively reviewed and six cases of splenic abscesses seen between 1989 and 1999 were identified. All patients had predisposing conditions with metastatic hematogenous infection in three and one each with trauma, immunodeficiency, and a contiguous site of infection. Fever was present in all patients with chills and vomiting in five and three patients, respectively. Left upper quadrant tenderness appeared in four patients and leukocytosis was found in every patient except one with the acquired immunodeficiency syndrome. Chest roentgenograms were abnormal in five patients with a left pleural effusion most common. Ultrasound revealed the defect in both patients it was utilized in and computed tomography was diagnostic in all cases. The causative organisms were anaerobes in two cases and Candida albicans, Streptococcus viridans, Escherichia coli, and Citro-bacter freundii each present in one case. Radiology guided percutaneous drainage was attempted in four patients but was only successful in one. Splenectomy with antibiotics was curative in the remainder with a 100 per cent survival. These data suggest that percutaneous drainage may be appropriate for certain patients initially, but the high failure rate demonstrates that splenectomy remains the standard treatment.

[Splenic involvement in infectious endocarditis. Association for the Study and Prevention of Infectious Endocarditis]

INTRODUCTION

Splenic involvement in the course of endocarditis consists in either splenic infarct or abscess. Pathophysiological examinations suggest the existence of a continuum between the two types of lesion. Signs and symptoms are usually poor or aspecific. Current incidence and diagnostic methods are rarely reported in recent medical literature.

EXEGESIS

We report a retrospective study conducted from a questionnaire that was circulated to nine French medical units. Two hundred and twenty five patients with infectious endocarditis according to Duke university criteria were included in the study. The existence of splenic lesions was investigated in 153 patients (68%). Splenic involvement was documented in 35 patients. Diagnostic methods were: abdominal echography (n = 77), abdominal CT scan (n = 40), and both techniques (n = 36). The incidence of splenic lesions was 9%, 35% and 36%, respectively. Among patients investigated using both diagnostic techniques, splenic abnormalities were detected by CT scan in 13 cases and by echography in six cases. Splenic abscess was suspected in nine patients by combining suggestive clinical course and radiological abnormalities, but was definitively evidenced in only four patients (surgery, n = 2, post-mortem examination, n = 2) presenting with large lesions (> or = 8 cm) associated with aortic endocarditis. All other 26 cases were categorized as splenic infarcts; however, diagnosis was confirmed in only two cases (surgery n = 1, autopsy n = 1).

CONCLUSION

These data suggest that: 1) the incidence of splenic involvement during endocarditis is approximately 35%, 2) CT scan is probably superior to echography for spleen screening, and 3) incidence of abscess requiring specific surgery is very low, inferior to 2%.

Ultrasound guided percutaneous drainage of abdominal abscesses in the hands of the clinician: a multicenter Italian study

OBJECTIVE

Image guided percutaneous drainage is a well established therapeutic technique. The results of these procedures, when performed directly by the clinician and under sonographic guidance,in respect to other imaging techniques are not yet clarified.

METHODS

The 886 cases of ultrasound guided drainage were collected from eight italian clinical institutions and the results were analyzed according to location of the abscess, drainage technique, underlying diseases, microbiological findings, immunological patient status and previous surgical intervention.

RESULTS

We observed an overall cure rate of 90.4%. The best results were obtained in hepatic abscesses, both amoebic and pyogenic (cure rate 98.7 and 94.3%). Slightly lower cure rates were obtained in abdominal and splenic abscesses, postoperative collections and severely immunocompromised patients. The frequency of complications was low (6.6%) and mostly related to catheter drainage. No drainage-related deaths occurred.

CONCLUSIONS

The study confirms the high clinical efficiency and safety of ultrasound guided percutaneous drainage, even when performed directly by the clinician. The sonographic guidance showed similar efficacy, more manageability and lower costs than other imaging techniques and it should be preferred whenever possible. For hepatic abscesses, ultrasound guided needle aspiration showed good results and less complications than catheter drainage.

Ultrasound-guided interventional procedures in splenic abscesses

The results of ultrasound (US)-guided interventional procedures over a period of 12 years in 21 consecutive patients with splenic abscess were reviewed. The interventional procedures were done with 21- or 18-gauge needles for aspiration of relatively small abscesses (< 3.5 cm) in eight patients and with an 8.3-9.0 French pigtail catheter for continuous drainage in 13 patients with larger abscesses (> or = 3.5 cm). In some patients, multiple abscesses were treated separately according to their various sizes. More than one catheterization were done in three patients because of detached catheter or recurrent abscesses. The interventional procedures were followed by at least eight weeks of appropriate antibiotic therapy. Only one patient had the complication of minimal subcapsular hematoma which needed no further treatment. All the patients had uneventful clinical courses. US-guided interventional procedure proved to be a treatment-of-choice for splenic abscess, and may avoid splenectomy by conserving the spleen.

Splenic abscess in chronic calcifying pancreatitis

Abscess formation in chronic pancreatitis is rare and the pancreas and liver are the most frequent localizations. We present a novel case of splenic abscess in chronic pancreatitis that led to diabetic ketoacidosis in an alcoholic patient. Percutaneous drainage and antibiotic treatment sufficed to resolve completely the abscess.

Clinical efficacy of ultrasound guided percutaneous drainage of abscesses in patients with leukaemia and lymphoma

Ultrasound guided percutaneous drainage (US-PD), a minimally invasive technique, has been reported as highly effective for the treatment of deeply located abscesses, particularly in immunocompromised patients. Therefore, we retrospectively studied its therapeutic efficacy and safety in a series of 14 patients with leukaemia and lymphoma. We collected the clinical and sonographic data of 14 patients with various types of leukaemia and lymphoma. These patients were consecutively observed in four clinical centres with long-term experience with ultrasound guided therapeutic techniques. The cases were analysed according to underlying disease, clinical features, location of the abscess, drainage technique, microbiological data and both short- and long-term outcome. In our series, 11 patients were treated with repeated ultrasound guided needle aspirations (US-NA) and 3 underwent catheter drainage (US-PCD). In 12/14 cases the procedure was successful (86%): the mortality rate was 14%. 5 patients died during the follow-up period because of the underlying disease, without abscess recurrence. No complications were reported. Our data suggest that ultrasound guided percutaneous drainage should be considered the first choice, minimally invasive procedure for the treatment of deeply located abscesses in patients with leukaemia and lymphoma.

Splenic abscess caused by Salmonella braenderup, treated with percutaneous drainage and antibiotics

Splenic abscess is a rare condition and its optimal treatment is still debated. We report on a 17-year-old immunocompetent female patient, hospitalized with Salmonella braenderup gastroenteritis and splenic abscess, who was treated with ciprofloxacin, percutaneous catheter drainage and despite remaining drainage of 50 ml/24 h, the catheter was removed and the antibiotic treatment was stopped when the fluid was clear. Following removal a transient increase in the size of the splenic cavity was observed, but without any clinical symptoms or deterioration of laboratory parameters. At the 1-year follow-up, ultrasound examination of the spleen disclosed only a 8 mm scar.

Splenic abscesses from 1987 to 1995

BACKGROUND

Isolated splenic abscesses is an uncommon clinical entity that is being increasingly recognized as a cause of intraabdominal sepsis in a wide variety of clinical situations, and involving a wide range of organisms. The increasing incidence of immunosuppressed states in this decade due to the use of chemotherapy for oncology, immunosuppression therapy for transplantation, and acquired immune deficiency syndrome, has changed the disease pattern of splenic abscesses.

METHOD

Data from 287 cases reported in the English literature between 1987 and 1995 were collected, analyzed, and compared with two previous reviews of cases reported before 1987.

RESULTS

Staphylococcus, Salmonella, and Escherichia coli are the most common organisms cultured. Immunosuppressed states were present in 33.5% of cases, with intravenous drug abuse and acquired immune deficiency syndrome accounting for half these cases. Computerized tomography and ultrasonography are diagnostic, with a sensitivity of 92.2% and 87.2%, respectively. Nonoperative management has a success rate of less than 65%, but salvage splenectomy does not increase mortality compared with splenectomy as initial therapy.

CONCLUSIONS

Splenic abscesses are increasingly recognized with immunosuppressed states. Percutaneous radiologically guided drainage may be suitable in some cases, but splenectomy with appropriate antibiotics is the definitive treatment.

Splenic abscess: a diagnostic pitfall in the ED

Splenic abscess, with its rare incidence and various misleading clinical manifestations, usually is a diagnostic pitfall in the modern emergency department. The most frequently seen symptoms and signs are fever, abdominal pain and tenderness over left upper quadrant, splenomegaly, leucocytosis, and left lower chest abnormalities. Four cases were collected during the past five years. On admission, one patient manifested symptoms mimicking a perforated peptic ulcer and the other three patients presented clinical and roentgenographic signs suggestive, but non-specific, for splenic abscess. In two cases, the diagnosis was based on sonography followed by computed tomography (CT). In one case, the splenic abscess was only visualized by CT. They all survived after splenectomy and appropriate antibiotic therapy. Culturing disclosed the offending organisms to be Escherichia coli, Pseudomonas aeruginosa, a Salmonella species, and Streptococcus viridans. These nonspecific clinical pictures should be thoroughly investigated, and CT, the most sensitive diagnostic tool, should be used whenever splenic abscess is suspected. Early diagnosis and timely treatment reduce the morbidity and mortality associated with splenic abscess.