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Biomedical subjects

R Dafiri

Publications and source records attributed to R Dafiri.

At least 19 recordsLinked to original sources
PubMed2002

[Hydatid disease of the urinary bladder: a case report].

All organs in the human body may be affected by hydatid disease. Urinary tract involvement in hydatid disease is not common, corresponding to only 2-4% of cases. The kidneys are the most commonly affected organs in the urinary tract. We report a case of hydatid cyst of the urinary bladder.

Echinococcosis↗
PubMed2002

[Primary extensive hydatidosis of the thigh: unusual radiological aspects].

Soft tissue involvement by hydatid disease remains unusual (5%) even in endemic areas. Patients typically present late because disease progression is slow and often asymptomatic. The authors report the unusual imaging appearance in a 59 year old woman with a one year history of progressive diffuse painless swelling of the left thigh. Ultrasonography showed multiple anechoic and hypoechoic cystic lesions, some of which containing serpentine echogenic structures consistent with partly calcified membranes. CT and MRI confirmed a diagnosis of hydatid disease and were helpful to demonstrate the relationship between cysts and adjacent structures. Surgical management was performed early because of fistulization to the skin.

Cutaneous Fistula↗
PubMed2000

[Pneumoblastoma in an adult: a case report].

Pneumoblastoma of the adult is rare. It presents more often as a large heterogenous and peripheral parenchymal mass. In this case, chest radiographs showed a small homogeneous mass in the right lung apex. The solid nature but non-specific appearance of the mass was confirmed at CT. The histological diagnosis was obtained from surgical biopsy. The interest of this observation is the rare occurrence of the lesion in adults and the atypical imaging features in this patient.

Humans↗
PubMed1999

[Isolated lumbar intradural hydatid cyst].

Intradural hydatidosis is a very uncommon form of vertebrospinal hydatidosis. We report a intradural lumbar localization, presenting the magnetic resonance imaging findings. We emphasize MRI for diagnosis and follow-up in search for residual or recurrent lesions.

Child↗
PubMed1999

[Imaging of urinary Candida bezoars].

OBJECTIVES: To describe the renewed interest in Candida infections in general and urinary tract infections in particular, due to a recrudescence of immunodepressed patients and a better knowledge of their clinical and radiological manifestations. MATERIAL AND METHODS: The authors report 2 cases of Candida bezoars diagnosed by IVU, ultrasonography and CT scan in two insulin-dependent diabetics. RESULTS: The first case presented with right renal involvement, in the form of delayed renal secretion on IVU with the presence of a pelvic filling defect, dilatation of the upper tract cavities on ultrasonography with a dilated renal pelvis occupied by an echogenic formation with no posterior acoustic shadow. CT showed a slightly heterogeneous low-density lesion with no contrast enhancement. The second case presented with right pelvic and vesical involvement. The diagnosis of urinary candidiasis was confirmed, in the first case, by the presence of whitish lumps on catheterization, for which analysis and culture were in favour of candidiasis and, in the second case, by direct examination and urine culture. Treatment with amphotericin B led to improvement followed by disappearance of the signs in both cases. CONCLUSION: In addition to laboratory examinations, noninvasive imaging techniques, mainly ultrasonography and CT, but also percutaneous aspiration, constitute a decisive element in the diagnostic and therapeutic management of urinary candidiasis.

Adult↗
PubMed1998

[Rare cause of ischemic cerebrovascular infarct in a young patient: cardiac hydatic cyst].

The authors report the case of a 28-year-old man in whom the diagnosis of hydatic cyst of the heart was strongly suspected on echocardiography and CT-scan and confirmed by surgery. The interest of this case is based the total clinical latency of this hydatic cyst discovered by echocardiography during a systematic checkup for cerebrovascular disorders. Echocardiography and spiral scanography with bidimensionnal reconstruction in coronal and sagittal planes allowed a rapid anatomic and topographic diagnosis. CT-scan also identified spread of echinococcosis and discovered a calcifield hydatid cyst of the liver and a multivesicular hydatid cyst of the left kidney.

Adult↗
PubMed1998

[Rare cases of bladder tumors].

Among epithelial tumors, squamous cell carcinomas represent only 3 to 7% of the cases in the temperate countries, but constitute the most frequent histologic kind in bilharzien endemic zones and 17% of intradiverticulars tumors. The adenocarcinoma is found most often in the bladder dome, representing only 0.3 to 3% of all bladder tumors. Invasive cancer in a neighboring organ (digestive tract, genital organs) must be eliminated. In most cases, combining ultrasonography and intravenous urography can be helpful for diagnosis of intradiverticular carcinoma or bladder dome tumor. Computed tomography and magnetic resonance images are the best methods for positive diagnosis and extension exploration for tumors of the dome and base of the bladder. In this work, we report a series of five cases of uncommon bladder carcinoma. Three of the cases were intradiverticular squamous cell tumors and two were adenocarcinoma of the bladder dome.

Adenocarcinoma↗
PubMed1998

[MRI and bladder leiomyoma].

Unlike epithelial tumors, connective tissue tumors are uncommon, representing only 3% of all bladder tumors. Leiomyoma of the bladder is the most frequent non-epithelial benign tumor of the bladder. Magnetic resonance imaging (MRI) is highly useful for diagnostic purposes and to determine the degree of extension. Only few reports of sonographic findings have been reported for leiomyoma of the bladder. The tumor usually develops within the bladder. Extravesicular formations have also been reported as well as a few intramural localizations. The characteristic feature is the absence of mucosal involvement. We analyzed the MRI findings in a case of leiomyoma of the bladder with intra and extravesicular development, inflammatory reaction of the bladder wall and uterine adherences in a woman with a past history of chronic cystitis. The role of diagnostic MRI is discussed.

Adult↗
PubMed1998

[Apropos of a case of acute pancreatitis revealing cystic dilatation of the common bile duct].

Dilatation of the common bile duct is rarely caused by cystic formations. Though the pathogenesis is uncertain, congenital disorders have been suggested. Most cases are observed in small children (80% female predominance) with only 20% of the cases reported in adults. Clinical signs vary. Recurrent acute pancreatitis has been reported but is rare. New imaging techniques using CT-scan cholangiography and sometimes MR cholangiography have greatly improved the diagnostic approach. MR of the bile ducts is a recent noninvasive technique enabling an analysis of the biliopancreatic ducts without contrast injection into the bile. To our knowledge, cystic dilatation of the common bile duct has not been previously reported in the literature. We report an interesting case in a 25-year-old woman who developed an episode of acute pancreatitis during the post partum period. We describe the clinical aspects and the different imaging findings, including magnetic resonance cholangiography results.

Adult↗
PubMed1996

[Leiomyosarcoma of the inferior vena cava and magnetic resonance imaging].

Venous leiomyosarcomas are rare and predominantly arise in the inferior vena cava (IVC). The clinical findings, often not very suggestive and nonspecific, sometimes precede the diagnosis by several years. According to the literature, leiomyosarcoma of the IVC generally occurs in middle-aged women. Modern imaging techniques, especially magnetic resonance imaging (MRI) can now establish the diagnosis of leiomyosarcoma of the IVC with a high probability and allow assessment of operability. The authors report a case of leiomyosarcoma of the IVC in a 24-year-old male patient, confirmed by intravenous biopsy. They present the MR features of this malignant tumour, rarely reported in the literature, and emphasize the value of this examination in the operability staging. The 3D imaging provided by MRI allows intra and extraluminal staging and involvement of adjacent organs. It also allows optimal evaluation of the effects on flow, circulatory slowing or thrombosis and, due to its high contrast resolution, it is more sensitive to distinguish clot from tumour nodule.

Adult↗
PubMed1995

[False aneurysm of the abdominal aorta of hydatid origin].

The rupture of hydatid cysts into the abdominal aorta is an exceptional and serious complication of the hydatid disease. We report a case of hydatid false-aneurysm of the abdominal aorta, explored by US Doppler, C.T. and arteriography.

Adult↗
PubMed1993

[Vascular involvements in Behçet disease. Based on 40 patient records].

The authors report about 40 cases of Behçet's disease with vascular involvement, i.e. 32% of a 125 case series. The results were marked by the high frequency of venous involvement (36 cases, including 28 thrombophlebitis of the deep trunks of the lower limbs) and the rarity of arterial involvement (6 cases). Arterial and venous involvements were associated in only 2 cases. Inferior vena caval thrombosis was recognized in 4 cases, including 3 with associated lower limb thrombosis. Superior vena caval thrombosis is found in 6 cases. Superior cavography has allowed demonstrating thrombosis and assessing its extent, to the innominate veins in all cases, to the subclavian veins in 3 cases, and to the axillary veins in 1 case. Cases of arterial involvement include 5 cases of pulmonary arterial aneurysm and 1 of upper limb arteritis affecting the humeral and cubital arteries. It has been revealed by hemoptysis in all cases. Angiography has allowed establishing the diagnosis of aneurysm in 4 cases (3 with partial thrombosis and 1 without thrombosis). CT revealed the diagnosis of completely thrombosed aneurysms not opacified by angiography in another case.

Adolescent↗