[Cerebral actinomycosis pseudotumor: a case report]. / Actinomycose cérébrale d'aspect pseudotumoral: à propos d'un cas.

INTRODUCTION: Cerebral actinomycosis is rare and difficult to diagnose. CASE REPORT: We report a case of a 45-year-old man hospitalized for seizures associated with fever and left hemiparesis. The white cell count and C-reactive protein were elevated. HIV serology was negative. Blood cultures remained sterile. The CT scan revealed hyperdense nodular lesions in the occipital area, with annular contrast uptake and peripheral edema causing a mass effect, suggestive of brain metastasis. The pathology examination of a surgical specimen disclosed cerebral actinomycosis. A dental origin of the infection was suspected. Hemiparesis remained after a 12-month antibiotic regimen associated with dental care and short-term corticosteroid therapy. CONCLUSION: Actinomycosis should be discussed as a possible diagnosis for all cerebral lesions, particularly in patients with a potential dental infection. Histology is required for positive diagnosis. Antibiotic therapy alone is generally sufficient; surgery is often performed for diagnostic purposes.

[Cerebral aspergillosis in immunocompetent patients: three case reports]. / Aspergillose cérébrale chez le sujet immunocompétent. A propos de trois cas.

INTRODUCTION: Cerebral aspergillosis is a severe disease most commonly suspected in immunocompromised patients. CASE REPORT: We report herein three cases of cerebral aspergillosis in immunocompetent adults. Sinus involvement was noted in two cases, but there was no extracerebral involvement in the third case. Mycology samples provided the diagnosis in two cases. In the third case, cerebral imaging visualized a tumor; the patient underwent surgery and the pathology exam of the surgical specimen established the diagnosis. All patients were given antifungal treatment and achieved a good outcome. CONCLUSION: Cerebral aspergillosis is highly uncommon in immunocompetent patients. In addition to immunodepression, the notion of pulmonary or ENT involvement may be suggestive. In the brain, aspergillosis mainly involves the basal nuclei and the thalamus.

[Brain tuberculomas: six cases]. / Tuberculomes cérébraux : à propos de six cas.

INTRODUCTION: Despite the resurgence of tuberculosis, partly due to HIV infection, central nervous system involvement remains rare, accounting for only 2 to 5% of all tuberculosis forms. PATIENTS ET METHOD: We report six cases of brain tuberculomas occurring in patients free of HIV infection and hospitalized between 2001 and 2006 in the internal medicine department of a Tunisian military hospital (Tunis). RESULTS: Four patients had an underlying defect. Headache, fever, consciousness disorders, deficit disorder or cerebellar syndrome are the main symptoms. Tuberculomas were multiple and disseminated in four cases and localized in the brain stem in two cases. Positive diagnosis could be established in two cases on the basis of the pathology results of a brain biopsy or detection of Mycobacterium tuberculosis in the cerebrospinal fluid; the diagnosis was presumptive in the other cases. Five patients recovered under antituberculosis treatment maintained on average 13 months (11 to 16 months). Steroid treatment was associated in five patients and tapered off for four to six weeks. One 78-year-old diabetic patient died in a context of cachexia with multiple organ failure.

[Pneumocystis pneumonia in 3 non HIV patients]. / Pneumocystose pulmonaire chez les patients non VIH: à propos de trois cas.

We report 3 cases of pneumocystis pneumonia (PCP) in 2 female and 1 male patients (mean age=50 years) free of human immunodeficiency virus (HIV) infection. One female patient presented with breast neoplasm the other with Wegener's granulomatosis, the male patient with lymphoma. All patients were taking immunosuppressive treatment at the time of infection. Persistent cough, dyspnea, and severe hypoxemia were the most characteristic clinical signs. All patients presented with lymphopenia (average CD4-cell count=275/mm3), two with hypoalbuminemia, and one with renal failure. In all cases, the microscopic analysis of bronchoalveolar lavage was used to establish the diagnosis. All patients were treated with trimethoprim and sulfamethoxazole and a tapering dose of corticosteroids. Outcome was favorable for 1 patient, 1 was transferred to the intensive care unit for acute respiratory failure, and 1 died.

[Cytomegalovirus myelitis in immunocompetent adult]. / Myélite à cytomégalovirus chez un adulte immunocompétent.

INTRODUCTION: Cytomegalovirus (CMV) infection occurs in 40 to 100% of general population. It is often asymptomatic in immunocompetent subject but may induce neurological syndromes such as encephalitis and myelitis. CASE RECORD: We reported a case of a 64-years-old woman immunocompetent, with acute proximal upper and lower limb weakness, paresthesias and two episodes of urinary retention. MRI of the spine showed abnormal enhancement from cervical to lumbar spine indicative for myelitis. Diagnosis of CMV associated myelitis was confirmed by a positive CMV serology. Administration of ganciclovir was followed by a partial improvement in five months. DISCUSSION: Few cases of CMV acute myelitis in immunocompetent patients have been reported in the literature. The pathogenesis is not well known, however, immune-mediated central nervous system damage may be attributed to the pathogenesis of the disease. Early diagnosis and treatment improves the prognosis.

[Legionnaire's disease complicated by acute renal failure due to rhabdomyolosis: a case report]. / Pneumonie à Légionelle compliquée d'une insuffisance rénale aiguë par rhabdomyolyse : à propos d'un cas.

The infectious origin of non-traumatic rhabdomyolysis is rare (5% of cases). An elevated muscle enzyme level is often reported in the legionnaire's disease. We report the case of a 39-year-old male, with no previous medical history, admitted for renal failure (creatininemia=977 micromol/l) secondary to rhabdomyolysis and a twelve-day history of infectious syndrome with pneumonia in the left base. Legionella pneumophila was considered responsible for these symptoms because of a positive serology. The other microbial assessments were negative. After rehydration and three weeks of antibiotics, the outcome was favorable: the renal failure resolved completely and the muscle enzyme level returned to normal.

[Central nervous system involvement in systemic sclerosis]. / Une atteinte du système nerveux central au cours de la sclérodermie systémique.

Systemic sclerosis is a connective disease usually known to spare the central nervous system. This has been much debated by recent imaging studies. We report a 56-year-old woman followed-up for systemic sclerosis since 2005. Four years later, she presented with cerebellar and pyramidal syndrome. Magnetic resonance imaging showed signs of cerebral vasculitis. The patient was treated by corticosteroids and cyclophosphamide pulses followed by azathioprine for maintenance therapy. Clinical and radiological outcomes were favourable. In patients with systemic sclerosis and neurological symptoms, abnormalities in the cerebral magnetic resonance imaging may, in the absence of another obvious etiology, indicate a central nervous system involvement associated with this systemic disorder.