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Biomedical subjects

J Frija

Publications and source records attributed to J Frija.

At least 127 records · Page 7Linked to original sources
PubMed1982

[Gas in a pyelic calculus (author's transl)].

An original case of a gas-containing pyelic calculus is described. This phenomenon in a radiolucent calculus spontaneously visible by computed tomography is attributed to the fissuration of a crystallin calculus. The hypothesis is emitted that, like gallstones, the apparition of gas is a fissuration that may precede the spontaneous disappearance of the calculus.

Female↗
PubMed1982

[Computed tomography diagnosis of anomalies of aortic arch of the adult (author's transl)].

Seven cases of anomalies of aortic arch investigated by computed tomography are described. The authors emphasized the interest of such an exam in the investigation of these anomalies. It is very interesting to know this pathology in sight to obviate some mistakes in the diagnostic of the tumors of the mediastinum. They describe three specific criterions of CT diagnosis of a right aberrant subclavian artery. The indications of computed tomography in the diagnostic and evaluation of the anomalies of aortic arch are discussed.

Adult↗
PubMed1982

[Gas in a pyelic calculus (author's transl)].

An original case of a gas-containing pyelic calculus is described. This phenomenon in a radiolucent calculus spontaneously visible by computed tomography is attributed to the fissuration of a crystallin calculus. The hypothesis is emitted that, like gallstones, the apparition of gas is a fissuration that may precede the spontaneous disappearance of the calculus.

Female↗
PubMed1980

Computed tomography diagnosis of renal angiomyolipoma.

Six computed tomography examinations were performed on four patients: two of them had tuberous sclerosis, and the other two had solitary angiomyolipomas. Computed tomography is an easy way of diagnosing tumoral hemorrhages and thus facilitates the supervision of patients with tuberous sclerosis. In two patients, the authors observed dense masses that might have indicated cartilage deposits.

Adult↗
PubMed1980

Computed tomography of aortic dissection.

Fourteen patients suspected of having dissection of the thoracic aorta, two with possible extensions into the abdomen of previously diagnosed dissection of the thoracic aorta, and one patient who had undergone surgical repair of an aortic dissection were examined by CT (computed tomography). Findings included localized increase of the aortic caliber, displaced intimal calcifications, intimal flaps, and false channels. These findings were confirmed by angiography or at necropsy. Two patients in whom CT showed no abnormalities had a favorable outcome. The authors conclude that CT is the examination of choice in removing doubt from the clinical diagnosis of aortic dissection.

Aortic Dissection↗
PubMed1980

[Determination of effective atomic number and electronic density by computed tomography with dual energies. Application to the thalamus (author's transl)].

The authors have studied seven thalamic hyperdense lesions of five patients in managing, at the same level, successively two scans with a computer tomograph at two different energies. After they recall their methodology of testing their C.T. and computations, they have found the effective atomic number and the electron density of these lesions. All (one Fahr disease and six old hemorrhages) have both high effective atomic number and electron density. They discuss the limits of this technic but they emphasize the great interest to see the chemical aspects of the structures observed in C.T.

Brain Diseases↗
PubMedDate not supplied

CT and MR patterns of spinal involvement in Richter syndrome.

Richter syndrome is the transformation of chronic lymphocytic leukemia (CLL) into large cell lymphoma. Besides the involvement of lymph nodes, liver, and spleen, bone lesions occur infrequently. We report one case of a patient with a paraspinous mass and destruction of the vertebra by large cell transformation of CLL seen on CT and MRI. There was nothing specific about the clinical presentation, imaging characteristics, and histopathological pattern of bone biopsy that would allow for confident differentiation from infectious spondylitis.

Diagnosis, Differential↗
PubMedDate not supplied

Extranodal Hodgkin disease: spectrum of disease.

Extranodal lesions in Hodgkin disease may develop and spread to virtually any organ system, simulating other neoplastic or infectious diseases. It is important to determine whether extranodal involvement represents a primary manifestation or dissemination of systemic disease, which has a poorer prognosis. Computed tomography (CT) is the preferred modality, although ultrasonography and magnetic resonance (MR) imaging may also be helpful. CT is superior to conventional radiography in assessing chest disease, although MR imaging is more sensitive than CT in detecting chest wall involvement. CT is preferred for evaluating hepatic lymphoma and has proved particularly valuable in diagnosing gastric lymphoma and detecting renal or perirenal masses. CT and MR imaging are equally effective in detecting brain Hodgkin disease; however, the latter is superior in the detection of extracerebral tumor deposits in the subdural or epidural space. MR imaging is also preferred for evaluating meningeal and spinal cord involvement. Both MR imaging and CT allow excellent assessment of bone texture and accurate analysis of tumoral bone invasion, but MR imaging is superior in demonstrating bone marrow infiltration, and CT is superior in delineating the extent of cortical bone destruction. In the future, metabolic positron emission tomography may provide more information about extranodal lymphoma than do the current imaging modalities.

Diagnosis, Differential↗
PubMedDate not supplied

[From lymphangioma to lymphangiomatosis. Apropos of 10 cases].

Seven cases of lymphangioma and 3 cases of diffuse lymphangiomatosis have been studied with computed tomography (CT). In the 7 cases of local involvement, the tumor was located in the mediastinum (3 cases), the mesentery (2 cases), the spleen (1 case), and the pelvis (1 case). The disease was diffuse in 3 cases, involving the mesentery, the pelvis, the posterior mediastinum, the retroperitoneal space and the bones in the first case; in the second case, lymphangiomatosis was located in the posterior mediastinum, the spine (T12 and L3) and the right iliac wing; the third case showed diffuse involvement of the posterior mediastinum and of the spleen. The CT study allows suspecting the disease when it demonstrates an encapsulated tumor with liquid or fatty density and thin walls enhancing with contrast. Other, less typical appearances may be observed, which should not lead to challenging this diagnosis. The CT exploration provides a complete assessment of the lesions, including the detection of tumors not seen on plain radiographs. In addition, CT is useful for the prognosis since it identifies the diffuse forms, which are naturally prone to aggravation, or recurrence when surgery has been indicated. Lymphangioma and lymphangiomatosis seem to be different forms of the same abnormality of the lymphatic system, either local or scattered.

Adolescent↗
PubMedDate not supplied

[Radiologic aspects of noncalculous inflammation of the biliary tract in AIDS].

Six cases of non-lithiasic cholecystitis and 7 cases of inflammatory cholangitis caused by cryptosporidium and/or cytomegalovirus infections have been studied in HIV-1 + patients. All patients were examined with ultrasound and 5 with computed tomography (CT). The appearance is the same as that described for non-lithiasic cholecystitis (pain when the ultrasound probe is applied, thickened gallbladder wall) and sclerosing cholangitis (dilatation and/or stenosis of the bile duct, thickened gallbladder wall). The ultrasound or CT examination of HIV + patients with gallbladder involvement is sufficient to guide treatment when a thickened gallbladder wall is demonstrated. On the other hand, bile duct opacification is the only method allowing the accurate assessment of the extent of lesions in cholangitis, on which the indication for eventual sphincterotomy is based.

Acquired Immunodeficiency Syndrome↗
PubMedDate not supplied

[Echographic and x-ray computed tomographic aspects of intramural hematoma of the duodenum. Apropos of a case].

Radiologic imaging in a case of intramural hematoma of duodenum demonstrated typical appearances of the lesion. Ultrasound imaging of the duodenal hematoma was sufficiently characteristic to be used as a basis for a semeiologic discussion and to orientate diagnosis. The relevant literature is reviewed, and value and indications of different imaging techniques for diagnosis and follow up of the hematoma discussed.

Adult↗