[Hepatic epithelioid hemangioendothelioma: review of 3 cases]. / Hémangioendothéliome épithélioïde hépatique: à propos de 3 cas.

Hepatic epithelioid hemangioendothelioma (EHE) is a rare neoplasm of vascular origin. EHE is an intermediate-grade malignancy, between benign hemangioma and angiosarcoma, with variable aggressiveness. Involvement often is multinodular simulating metastases from a primatry extra-hepatic malignancy leading to delays in diagnosis. We report the imaging features in three cases of histologically proven hepatic EHE. The imaging features suggestive of EHE will be emphasized, especially for multinodular lesions suggesting liver metastases in patients with no known primary.

Extraskeletal Ewing sarcoma of the abdominal wall.

Ewing sarcoma is most commonly a bone tumour which has usually extended into the soft tissues at the time of diagnosis. Exceptionally, this tumour can have an extraskeletal origin. Clinical or imaging findings are non-specific and diagnosis is based on histology. We report a case of an extraskeletal Ewing sarcoma developed in the soft tissues of the abdominal wall in a 35-year-old woman who presented a painful abdominal wall tumefaction. Ultrasongraphy and computed tomography showed a large, well-defined soft tissue mass developed in the left anterolateral muscle group of the abdominal wall. Surgical biopsy was performed and an extraskeletal Ewing sarcoma was identified histologically.

["Méta-analyse": a web-based tool for research and analysis of radiology papers]. / "Méta-analyse" : un outil de recherche et d'analyse d'articles de radiologie sur le web.

Finding articles providing answers to specific clinical questions is greatly facilitated by the availability of indexed Medline abstracts using the Pubmed search engine. Nonetheless, the large number of references sometimes requires a time-consuming review of multiple abstracts. In order to streamline the search process, we have created a tool facilitating the search and review of these abstracts. We present here this tool named "Méta-analyse".

[Percutaneous retrieval of intravascular foreign bodies]. / Retrait percutané de corps étrangers intravasculaires.

Percutaneous extraction of intravascular foreign bodies is becoming an increasingly common technique. It is an effective and low aggressive way to avoid surgery. We report four new cases of percutaneous retrieval.

The value of using verbs in Medline searches.

New findings are continuously identified thanks to novel diagnostic procedures, among others in medical imaging. It would be useful to retrieve these new findings from literature. The aim of this work is to investigate if using verbs in MEDLINE queries can improve the retrieval of findings. Verbs used in the field of findings were selected: 'to show' (an examination shows a finding) and 'to confirm' (a finding confirms a diagnosis). For each of these verbs, semantically close verbs were researched on the WordNet website. Then, the extent to which adding these verbs to a query about various radiological pathologies can improve findings retrieval in Medline citations was studied. This method has been tested on two sets of MEDLINE citations regarding the diagnostic imaging of musculo-skeletal disorders. Using appropriate verbs in Medline queries enhances the precision from 53% to 61% and from 53% to 74%, respectively, in our first and second test set. A recall of 74% and 83% was reached in our two experiments. Using relevant verbs can be a rather simple way to improve the retrieval of findings related to diseases and diagnostic procedures from Medline citations.

[Ectopic thyroid]. / Thyroïde ectopique.

PURPOSE OF STUDY: Ectopic thyroid is defined as thyroid tissue not located anterolaterally between the second and the fourth tracheal cartilage. This anomalous localization results from abnormal embryologic development and/or migration of the gland. The purpose of this study is to demonstrate the role of imaging in the preoperative evaluation of ectopic thyroid. MATERIAL AND METHODS: A 13-year-old girl with no other significant medical history, consulted for dysphonia, fullness in the throat and breathing difficulties. Examination of the oral cavity and oropharynx showed a large mass attached to the base of the tongue, the mass was evaluated by ultrasanography, computed tomography, magnetic resonance imaging and scintigraphy. RESULTS: Ultrasound sonography showed a well-defined hypoechogenic mass in the posterior end of the tongue. Scintigraphy showed hyperfixation at the base of the tongue with no fixation in the normal thyroid site. Computed tomography scan revealed a spontaneously hyperdense spherical basilingual mass with a high enhancement after contrast injection. In MRI, the mass was isointense with the muscle in T1-weighted images and hyperintense in T2 weighted images. CONCLUSION: Ectopic thyroid must be evoked in the presence of any basilangual mass. Scintigraphy and ultrasanography are gold standard in demonstration the ectopic thyroid tissue. But computed tomography and MRI playing an increasingly important role in the diagnosis, in determination of the malignant transformation and planning the surgical approach.

[Isolated synovial chondromatosis of the subacromial bursa: report of a new case and review of the literature]. / La chondromatose synoviale isolée de la bourse sous acromiodeltoïdienne: un nouveau cas et revue de la littérature.

Synovial chondromatosis is a rare metaplasia of the synovium of unknown etiology that may involve occasionally the subacromial bursa. We report a new case diagnosed by ultrasound in a 30-year-old man and we present pathogenetic, diagnostic and therapeutic features of this disease with a literature review.

[Vertebral and spinal cord hydatidosis: contribution of imaging]. / Hydatidose vertébromédullaire: intérêt de l'imagerie.

The authors report the case of a vertebromedullary hydatidosis revealed by medullar compression in a 40-year-old male patient. Magnetic resonance imaging showed lesions of the seventh and eighth dorsal vertebras, cystic lesions in the epidural space and in the perivertebral soft tissues. Surgical excision lead to clinical cure. Vertebromedullary hydatidosis is rare and severe. Modern techniques of imaging are very helpful for the diagnosis and the follow-up of patients after treatment.

[Carpal scaphoid chondroma complicated by fracture: a case report]. / Chondrome du scaphoïde carpien compliqué d'une fracture: à propos d'un cas.

The carpal scaphoid is an uncommon localization for chondroma. Ten cases have been reported in the literature. We report a new case of right carpal scaphoid chondroma complicated by fracture in a 30 year-old man. The diagnosis was strongly suggested by the computed tomography scan and confirmed at pathology examination of the operative specimen. Treatment consisted in tumor enucleation and a cortico-cancellous graft to fill the gap followed by plaster case immobilization. Clinical and radiological outcome was favorable.

[Encapsulating peritonitis disclosing primary melanoma of the small intestine: a case report]. / Péritonite enccapsulante révélatrice d'un mélanome primitif du grêle: à propos d'une observation.

Encapsulating peritonitis is a chronic peritonitis leading to the constitution of the thick white nacred fibrosis membrane. It is a rare affection. Its physiopathology is poorly elucidated. Diagnosis is usually at operation. We report an unpublished case of a 36-year-old patient, admitted for an abdominal mass. The different investigations demonstrated small bowel tumor with entrapped ileal and jejunal loops within a capsule. Diagnosis was made at the time of operation by discovering an encapsulating peritonitis caused by a primary malignant melanoma of the small bowel, which is an exceptional affection.

[Eagle syndrome: case report]. / Le syndrome de Eagle: à propos d'un cas.

Eagle's syndrome, also known as elongated styloid process, is an entity that may be the source of craniofacial and cervical pain. It is frequently reported but is probably more common than generally considered. The symptoms related to Eagle's syndrome can be confused with those attributed to a wide variety of Oropharyngeal and Maxillofacial diseases. The paucity of information in the radiologic literature prompted this report.

[Osteoid osteoma of the tarsal navicular bone: an uncommon localization]. / Ostéome ostéoïde de l'os naviculaire tarsien: une localisation rare.

We report a case of subchondral osteoid osteoma of the tarsal navicular bone. Osteoid osteomas are often located in the foot, mainly in the talus. This is the first report in the literature of a tarsal navicular bone localization. Diagnosis was difficult and established late due to misleading clinical presentation simulating mediotarsal arthritis.

[Diaphragmatic bronchogenic cyst: a rare case report]. / Kyste bronchogénique du diaphragme : à propos d'un cas rare.

Retroperitoneal bronchogenic cysts are rare and those located in the diaphragm are exceptional. We describe an additional case of bronchogenic cyst of the left crus of diaphragm. Diagnosis of a diaphragmatic lesion was confirmed during laparotomy and complete resection was successful. Final diagnosis was done on pathology.

[Aorticopulmonary paraganglioma. A case report]. / Paragangliome aortico-pulmonaire. A propos d'un cas.

Paraganglioma is a tumor which develops from the paraganglion system, generally in the adrenal medulla (90%). Thoracic localisations are exceptional and arise essentially for the aortic and subaortic bodies, leading, in this case, to an anterior and posterior localisation. We report a case of non-chromaffin non-secreting aorticopulmonary paraganglioma, discovered fortuitously in a 64-year-old man.

[A patient with a diaphragmatic mass]. / A propos d'une masse diaphragmatique.

Cystic teratoma of the diaphragm is a rare, generally asymptomatic, disease. We report a case which was disclosed by the development of fever and pain in the left hypochondria. Imaging ruled out surgical emergency and led to the diagnosis, describing the relations of the tumor.

Immune responses in tuberculosis: antibodies and CD4-CD8 lymphocytes with vascular adhesion molecules and cytokines (chemokines) cause a rapid antigen-specific cell infiltration at sites of bacillus Calmette-Guérin reinfection.

Rabbit primary dermal bacillus Calmette-Guérin (BCG) lesions were compared with reinfection BCG lesions in order to gain insight into how immune responses protect against clinical tuberculosis. As early as 3 hr, a marked infiltration of macrophages and lymphocytes occurred in the reinfection group, while very little cell infiltration occurred in the primary group. It seems that only an antigen-antibody reaction could produce such an immediate pronounced antigen-specific chemotactic effect, because very few lymphocytes are normally present in the skin. Therefore, antibodies hasten the accumulation of an expanded antigen-specific T-lymphocyte population (memory cells) at sites of bacillary lodgement. By 1-2 days, the primary and reinfection BCG lesions differed 400- to 500-fold in size. By 4-5 days, the size of the reinfection lesions had declined, while the size of the primary lesions had increased, so that, grossly, both types of lesion were similar. At 8 days in reinfection lesions and at 12 days in primary lesions, small secondary peaks in size occurred, which were probably caused by cell-mediated immune responses. In rabbits with primary BCG lesions, skin tests with Old Tuberculin were positive at 9 days, accompanied by a rise in the levels of antibodies to the secreted antigen, phosphate-specific transport protein 1, but the levels of antibodies to the constitutive antigens, purified protein derivative and heat-shock protein 65, did not increase appreciably until some time after 23 days. In tissue sections of reinfection BCG lesions, the percentage of mononuclear cells labelled, by in situ hybridization techniques, for the mRNA of monocyte chemoattractant protein 1 (MCP-1), a chemokine, peaked at 3 hr and then was down-regulated, whereas in primary lesions, this percentage was down-regulated only after 2 days. [The percentage in the tissue sections for the mRNAs of interleukins 1beta and 8, as well as the proteins of MCP-1 and tumor necrosis factor alpha (TNF-alpha), followed a somewhat similar time-course to that of MCP-1 mRNA.] A high percentage of mononuclear cells containing the MCP-1 mRNA 'factory' would favour enlargement of the lesions and a low percentage would favour their regression. At 5 days, the percentage of CD4 and CD8 lymphocytes, stained by immunohistochemical techniques, and the amount of microvasculature stained similarly for vascular cell adhesion molecule 1 were higher in the reinfection group, indicating that prior immunization caused a more rapid (antigen-dependent) up-regulation of these factors. Tuberculin reactions resembled early reinfection BCG lesions in almost every factor evaluated herein. In brief, the production of chemokines began soon after BCG reinfection, peaked within a few hours and was markedly down-regulated by 24 hr, a time at which the lesions of reinfection were of maximal size. Therefore, the amount of cell infiltration was tightly controlled, probably by the variety of mechanisms listed herein.

Prevalence of hepatitis B virus among chronic schizophrenia patients.

We aimed to determine the prevalence of hepatitis B surface antigen (HBsAg) among chronic schizophrenia patients in Jordan. Over a period of 12 months, 192 patients (106 male and 86 female) were tested for hepatitis B virus (HBV) by enzyme immunoassay. An equal number of age- and sex-matched healthy controls was also tested. Of the schizophrenia patients, 14 (10 male and 4 female) were positive for HBsAg while only 5 (4 male and 1 female) of the control subjects tested positive. The difference was not statistically significant but it indicates that chronic schizophrenia patients are a risk group for HBV infection and likely to benefit from preventive measures (health education and immunization against HBV).

Prevalence of hepatitis B virus among chronic schizophrenia patients

We aimed to determine the prevalence of hepatitis B surface antigen [HBsAg] among chronic schizophrenia patients in Jordan. Over a period of 12 months, 192 patients [106 male and 86 female] were tested for hepatitis B virus [HBV] by enzyme immunoassay. An equal number of age- and sex-matched healthy controls was also tested. Of the schizophrenia patients, 14 [10 male and 4 female] were positive for HBsAg while only 5 [4 male and 1 female] of the control subjects tested positive. The difference was not statistically significant but it indicates that chronic schizophrenia patients are a risk group for HBV infection and likely to benefit from preventive measures [health education and immunization against HBV]