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Pyomyositis tropicans: a diagnostic dilemma.

Pyomyositis tropicans is a rare disease in non-tropical climates and thus presents diagnostic difficulties. Two children with single staphylococcal psoas muscle abscesses were recently successfully treated. Computerized axial tomography was found to be a useful diagnostic aid, allowing exact localization of the lesion. The diagnosis and therapy of these abscesses are discussed.

Abscess↗

[Adductor muscle pyomyositis simulating acute appendicitis: CT and MR imaging findings].

Pyomyositis is a primary bacterial infection of skeletal muscle. This infection tends to occur in the large muscles of the lower extremity. Pyomyositis of the proximal muscles of the thigh can simulate acute abdominal disease. Early diagnosis improves the outcome. Delayed diagnosis may lead to septicemia and shock. We report the CT and MRI findings in a patient with pyomyositis of the proximal muscles of the thigh.

Adult↗

[Mycotic aneurysm of the subrenal abdominal aorta: extra anatomical reconstruction in five patients].

Between 1988 and 2001, five patients with mycotic aneurysm of the abdominal aorta underwent surgery. Extra-anatomical reconstruction with axillo-bifemoral bypass grafting was performed in all patients. The hospital mortality rate was 20%. During the follow-up period two patients presented thrombosis of the axillo-bifemoral bypass, descending aorto-bifemoral bypass was performed in one. Extra-anatomic revascularization is a satisfactory procedure in the treatment of mycotic abdominal aortic aneurysm. The results are acceptable and the prognosis is mainly related to the underlying pathology and the severity of the infection.

Acquired Immunodeficiency Syndrome↗

[Liposarcoma of the perirenal cell].

OBJECTIVES: To show the imaging tests characteristics and differential diagnosis of masses located within the retroperitoneal perirenal area. METHODS: Diagnostic imaging tests (KUB x-ray, ultrasound, helical CT scan with IV contrast) and follow-up in one case of perirenal cell liposarcoma. RESULTS: The study of the surgical specimen after renal tumorectomy in a patient with a solitary kidney resulted in the present diagnosis. CONCLUSIONS: Liposarcoma is a malignant neoplasia derived from fatty tissue. Approximately 13% are located in the retroperitoneal area, and less than 1/3 arise from perinephric fat. We report one case of liposarcoma located in the perirenal cell as an incidental finding during contralateral psoas muscle abscess follow-up in a patient with a solitary kidney after surgery for xanthogranulomatous pyelonephritis. Successive controls during the last year allowed us to evaluate the evolution of this lesion's.

Female↗

Analysis of septic morbidity following gunshot wounds to the colon: the missile is an adjuvant for abscess.

Over a 7-year period, 151 patients with gunshot wounds to the colon surviving beyond 24 hours were managed. The bullet was retained in the body in 66% and exited in 34%. Thirty-four (23%) developed major septic complications (diffuse peritonitis, 21%; intraperitoneal abscesses 24%; and extraperitoneal abdominal abscesses, 56%). The septic complication rate was 26% in the bullet-present group compared with 16% in the remainder (p less than 0.15). The increased septic rate in those with bullets present was the result of abscesses developing around the retained missile. That group with missile abscesses had a lesser degree of injury as measured by the abdominal trauma index compared with the other patients with septic complications (p less than 0.001). Fifteen (79%) of the 19 patients with missile and missile track abscesses had them develop in the psoas muscle. These abscesses occur by fecal contamination of the muscle following inoculation by the bullet, which passes through the large bowel. Computed tomography-guided and operative drainage tend to fail if the foreign body is not removed. Computed tomography-guided or operative drainage should be successful in draining missile track abscesses when the bullet has exited the patient.

Abdominal Muscles↗

Unusual presentations of aortoiliac aneurysms.

Unusual presentations of aortoiliac aneurysms may be the reason for a delay in diagnosis of potentially life-threatening conditions. Five such unusual clinical pictures are presented and discussed. The aneurysms were falsely diagnosed as malignant disease, renal colic, sciatic syndrome, intra-abdominal bleeding of unknown origin, and psoas muscle abscess. The medical staff was misled by the atypical complaints, signs and symptoms, which resulted in a dangerous delay in diagnosis. The use of currently available ultrasonography and CAT scans, which enables early diagnosis, depends on the alertness of clinicians when they confront an atypical clinical picture that may be the first clue of a noninnocent aneurysm of the aortoiliac complex. Early surgical intervention before dissection, rupture or fistulization occur ensures a positive outcome and avoids emergency procedures with their attendant high operative mortality and postoperative morbidity.

Aged↗

Streptococcal toxic shock syndrome in southern Taiwan.

This report outlines our experience with streptococcal toxic shock syndrome (STSS) at the Veterans General Hospital-Kaohsiung during the period October 1990 to November 1993. Group A streptococci were isolated from blood or normally sterile tissue in association with hypotension and multi-organ failure in the eight cases studied. A primary focus of infection was identified in seven cases, including pneumonia (1), septic arthritis (1) and soft-tissue infections (5). The remaining patient suffered from hyperglycemic hyperosmolar non-ketotic coma and Group A streptococcal bacteremia, without an obvious focus of infection. There were four cases of bacteremia. Clinical complications included acute renal failure in all eight cases, disseminated intravascular coagulation in five cases, liver involvement in two cases, adult respiratory distress syndrome in one case and soft-tissue necrosis in five cases. All isolates were sensitive to penicillin, and most patients were treated with intravenous penicillin G, with or without other antibiotics (gentamicin or clindamycin). Of the six patients with soft-tissue infection, two underwent amputation of the infected limb, and one patient underwent sono-guided pigtail drainage of psoas muscle abscess. Three of the patients died. STSS may be uncommon in Taiwan, but it is not rare. Early recognition of STSS (facilitated by Gram stain and culture), prompt debridement and drainage, and adequate antibiotic treatment with penicillin or clindamycin, or both, are necessary for control of such lethal infections.

Adult↗