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M Bark

Publications and source records attributed to M Bark.

9 recordsLinked to original sources
PubMed1991

Case report: computed tomography demonstration of renal papillary necrosis.

Renal papillary necrosis has been diagnosed by intravenous urography and ultrasound, but no reports of the computed tomographic (CT) features have been published. We describe a case of renal papillary necrosis in a diabetic patient suspected on CT and confirmed by intravenous urography. CT demonstrated small kidneys, 'ring shadows' in the medullae, contrast filled clefts in the renal parenchyma and renal pelvic filling defects. In patients with poor renal function where intravenous urography may be difficult, CT may demonstrate necrotic papillae allowing the diagnosis of renal papillary necrosis to be made.

Aged↗
PubMed1988

Should maternal alpha-fetoprotein estimation be carried out in centers where ultrasound screening is routine? A sensitivity analysis approach.

We describe a case of small, open spina bifida that was detected on the basis of maternal serum alpha-fetoprotein levels but consistently missed on careful ultrasound examination. This prompted us to reexamine the policy (adopted by an increasing number of departments) of relying exclusively on ultrasound examination for the detection of spinal lesions. In this article we therefore analyze the number of additional cases of spina bifida that could be detected by offering maternal serum alpha-fetoprotein screening in addition to a routine ultrasound examination. Our calculations are made on the basis of published assessments of the performance of these tests and on the assumptions about test independence. We test our conclusions against a wide variety of test performance values in a detailed sensitivity analysis. The final decision to carry out maternal serum alpha-fetoprotein testing is a value judgment, but this decision should be based on realistic numeric estimates of the potential benefits and hazards of this procedure.

Adolescent↗
PubMed1980

Prospective study of thrombophlebitis and "pseudothrombophlebitis".

43 non-surgical patients presenting with calf pain and a clinical diagnosis of deep venous thrombosis (DVT) were studied by arthrography, venography, and ultrasound. Only 14 had venographic evidence of DVT; 5 of these had popliteal cysts, which in 4 cases probably contributed to symptoms. 11 patients had popliteal cysts and normal venograms, and 9 of these cysts were thought likely to be the cause of the symptoms. In 18 patients all investigations were normal. Physical signs were not helpful in distinguishing between the three groups of patients. Ultrasonography detected only 2 of the 16 popliteal cysts. Popliteal cysts should be considered in the differential diagnosis and as a possible coexisting condition in patients suspected clinically of having DVT. Also, the finding of a Baker's cyst should not deter one from doing a venogram.

Adolescent↗
PubMed1977

The ultrasound diagnosis of rectus sheath haematoma.

Three cases of rectus sheath haematoma are presented in which the diagnosis was confirmed by the use of ultrasound. The aetiology and diagnosis of the disease are discussed and the use of ultrasonography in a disease with a previously low preoperative diagnostic rate is emphasized.

Abdominal Muscles↗