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B Stallenberg

Publications and source records attributed to B Stallenberg.

25 records · Page 2Linked to original sources
PubMed1990

Cysts of the prostate and seminal vesicles: MR imaging findings in 11 cases.

Cysts of the prostate and seminal vesicles are confusing abnormalities because they are uncommon and their origin is uncertain. Several approaches to diagnosis have been used, most recently CT and transrectal sonography. In this study, we investigated the value of MR imaging in the diagnosis of six cases of prostatic cyst and five cases of cysts of the seminal vesicles. All patients were symptomatic. T1- and T2-weighted spin-echo images were obtained in all cases; pathologic confirmation was available in four patients. MR images were analyzed prospectively without knowledge of clinical data or the results of other imaging procedures. In all cases, low- and high-signal masses were observed on T1- and T2-weighted images, respectively. The cysts were unilocular with a sharply defined margin, ranging from 0.5 to 3.0 cm in diameter. The thin wall was of low signal intensity on T2-weighted images. Our experience suggests that MR imaging is useful in demonstrating the liquid content of prostatic and seminal-vesicle cysts and in establishing their size and location.

Adult↗
PubMed1989

Hypothesis: reduced renal mass with glomerular hyperfiltration, a cause of renal hyperechogenicity in children.

A group of 10 pediatric patients had renal hyperechogenicity and reduced renal mass. The authors wish to suggest a relationship between renal hyperechogenicity and glomerular hyperfiltration according to Brenner's theory on the progressive nature of kidney disease. Reduced renal mass was related to multicystic dysplastic kidney (3 cases) nephrectomy (3 cases) and to reflux nephropathy (4 cases). The hyperechogenicity was diffuse in 6 cases with the preservation of cortico-medullary differentiation and was localized in all four cases of reflux nephropathy producing a "pseudotumoral" appearance. Hyperfiltration was confirmed by isotope studies in all 3 cases where it was performed. This condition together with secondary glomerulosclerosis could explain hyperechogenicity. The predictive value of such patterns are still unclear; yet such findings should lead to appropriate radiolocal, functional, clinical and dietary measures.

Child↗
PubMed1989

[Diagnostic role of MRI in localized cancer of the prostate].

The authors extracted 11 case files of patients undergoing radical prostatectomy following MRI studies from a series of 192 MRI examinations of the prostate with histological confirmation of the diagnosis. This series is part of a prospective study in which MRI was always interpreted prior to histological results. The diagnosis of prostatic cancer was confirmed in 9 cases on the basis of a hyposignal on T2-weighted scans. In 4 cases, extracapsular spread of the tumour was demonstrated by MRI and was confirmed at surgery. In the cases in which the cancer was visible on MRI, the diagnosis of local spread proved to be accurate. The debate concerning the role of MRI in prostatic disease is not definitively resolved, but this preliminary series indicates the potential and the limitations of this technique.

Humans↗
PubMedDate not supplied

Ulcerated dystrophic calcinosis cutis secondary to localised linear scleroderma.

Dystrophic calcinosis is a more common form of calcinosis cutis; calcium salts are deposited secondary to local inflammation, tissue damage and degeneration. Various conditions can cause dystrophic calcinosis, including connective tissue disease, infection, inflammatory processes, chronic venous stasis, cutaneous neoplasm and trauma. We report a case of ulcerated cutaneous calcinosis associated with a localised linear scleroderma or morphea. Healing of the ulcerations took place after four months of treatment with colchicine 1 mg per day.

Aged↗
PubMedDate not supplied

Magnetic resonance imaging of the infrapatellar fat pad: correlation with patellar articular cartilage abnormalities.

We tried to demonstrate an association between magnetic resonance imaging findings of the Hoffa fat pad and patellar chondropathy. Parallely, we checked the correlation between the diagnosis of patellar chondropathy on magnetic resonance imaging and during arthroscopy. Our study is a retrospective review of the records of 135 patients who underwent an arthroscopy and MRI study at our institution between October 1997 and January 2001. Magnetic resonance images of the Hoffa fat pad were interpreted and typewritten arthroscopy reports were recorded. A patellar chondropathy assessed during arthroscopy was present in 64 of 135 patients. Twenty of them had abnormal signal intensity in Hoffa fat pad with a sensitivity of the magnetic resonance imaging findings of 31% and a specificity of 73%. We didn't find any significant association in the different correlations between signal abnormalities of Hoffa fat pad and patellar chondropathy. On the other hand, there was a significant association between the results of patellar chondropathy on magnetic resonance imaging findings and during arthroscopy. No significant association was shown between the MRI findings of Hoffa fat pad and the patellar chondropathy.

Adipose Tissue↗