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B Perin

Publications and source records attributed to B Perin.

At least 19 recordsLinked to original sources
PubMed2003

Somatosensory evoked potentials for the diagnosis of proximal sensory median neuropathy with preserved distal sensory action potential.

A 33 year-old-man with paresthesia in first three fingers of the right hand after minor trauma of the arm was examined electrophysiologically. The proximal sensory median neuropathy was isolated which it is unusual in traumatic lesion. Motor and distal sensory conduction studies were normal but sensory evoked potentials (SEPs) were abnormal by right median nerve stimulation at the wrist level with decrease in amplitude of peripheral potential at the Erb's point, the cervical and contralateral parietal levels. This pattern, preserved distal sensory action potential and abnormal peripheral SEPs were suggesting the presence of proximal sensory block conduction without wallerian degeneration. The recovery was complete and fast in correlation with the absence of axonopathy.

Action Potentials↗
PubMed1992

[Ultrasonic assessment of the capsular-ligamentous structures of the ankle. Normal features].

The study of normal ankles by means of US has enabled the authors to define the articular system so as to obtain a useful reference for the study of pathological ankles. A real-time (Ansaldo AU 530) unit with a 10 MHz sectorial probe was employed together with a Toshiba unit with a 7.5 MHz sectorial probe. In 6 cases, the stretching of the capsuloligamentous system before arthroscopy was examined. The authors' attention focused on 3 major functional anatomic areas: the talofibular ligament area, the calcaneofibular ligament area, and the deltoid ligament area. The comparison of US scans before and after stretching the capsula with a physiological solution allowed the most interesting structures to be recognized and quantified from a US-anatomical point of view. Useful parameters were both the length of the lateral aspect of the ligament (mean difference in length between rest and exercise conditions: 15 mm for the anterior talofibular ligament and 14 mm for calcaneofibular ligament) and the thickness of intra-articular echoes (mean value: 5 mm).

Ankle Joint↗
PubMed1989

[Echotomographic evaluation of the anterior urethra].

A simple method of sonographic (US) evaluation of penile and bulbous urethra is reported. Twenty-three dysuric patients were examined. They were divided into 2 groups according to their pathology. The US patterns of normal urethra were evaluated in 10 patients (first group) with no obstructive lesions. Urethral and periurethral structures were examined in 13 patients (second group) with urethral obstructive pathology. All patients underwent conventional cystourethrography. The diagnostic parameters considered were urethral gauge and thickness, echogenicity of the urethral wall, and Cowper's glands. US evaluation of obstructive lesions provided the same findings as conventional radiological techniques. Moreover, US allowed the evaluation of both thickness and echogenicity of the urethral wall, and of normal/injured Cowper's glands.

Adolescent↗
PubMed1989

[Sclerosing adenosis and infiltrating epitheliosis of the breast. Radiohistopathologic correlations and differential diagnosis of carcinoma].

Sclerosing adenosis and infiltrating epitheliosis are both benign diseases which are clinically, radiologically and macroscopically impossible to distinguish from cancer. Over a four years' period, 27 lesions of this kind, which are usually considered as rare, were found in 27 patients. The average age of the patients was 36 years, which confirmed the lesions as diseases typical of fertile women. In all cases, both clinical and instrumental findings (mammography and echotomography) indicated a kind of malignant cancer. The final diagnosis was always made on surgical/bioptic (fine-needle biopsy) specimens. This paper is aimed at stressing the lack of mammographic findings useful for the differential diagnosis of sclerosing adenosis-infiltrating epitheliosis and breast cancer. The utility of fine-needle aspiration biopsy is also stressed.

Adult↗
PubMed1988

[Angiographic and clinical evaluation of the topical administration of nitrate derivatives in distal obstructive arteriopathies of the legs. Initial experiences].

The vasodilator effect obtained by the topic use of a nitroglycerin compound (TNG) has been angiographically tested on 11 patients affected by distal arteriopathy of the legs. All patients presented arteriosclerotic vascular lesions; two of them also suffered from diabetic angiopathy. Arteriography of the legs has proved to be a very important tool in the evaluation of the patients' response to the administration of the drug. An hour after 80 mg of TNG had been applied to the skin of the examined leg, arteriography showed a marked dilation, especially of the muscular arteries and the undamaged tracts of the arteries of the legs. Angiographic evaluation of the functional blood supply thus obtained provides prognostic information and helps in the choice of the subsequent therapy. Furthermore, the clinical efficacy of prolonged treatment with this drug has been tested in 10 out of the 11 patients. They all responded with an immediate and persistent hemodynamic improvement, evaluated according to Fontaine's classification.

Administration, Topical↗
PubMed1987

[Ultrasonics of the shoulder. Diagnostic possibilities in lesions of the rotator cuff].

Twenty five healthy people and 25 patients with shoulder pain underwent US control over a 12-month period: 24 patients with shoulder pain had rotator cuff and/or biceps tendon lesions. The US findings on rotator cuff and biceps tendon lesions are compared with those of arthrography and/or surgery (96% sensitivity). US is rapid, safe, non invasive, inexpensive and often more accurate, and its use is recommended for the routine examination of the shoulder joint instead of arthrography.

Adolescent↗
PubMed1987

[Ultrasonic diagnosis of the central hyperechogenic area in lymph nodes. A sign of benign lymphadenopathy].

When identifying superficial lymphadenopathies by means of echotomography, the only accepted criterium of evaluation is still dimension. Only lymph nodes with a diameter longer than 0.5 cm are considered as potentially pathological, irrespective of their morphological characteristics. In the past two years an echotomographic study of the surface regions was carried out on 300 patients. Some suffered from unspecific solitary lymphadenopathies; most of the others were affected by stationary neoplasias, mainly situated in the cervical region. In many cases it has been possible to correlate the echotomographic and the histological results. Sixty-nine out of the 300 examined patients had lymph nodes with a central hyperechogenic area. Histology showed these lymph nodes to be the site of reactive hyperplasia. This characteristic has never been found in neoplastic lymph nodes. It has been hypothesized that this spot corresponds to the hilus of the lymph node and that, through its identification, it may be possible to distinguish benign from neoplastic lymph nodes.

Adolescent↗
PubMed1986

[Suprapubic ultrasonic diagnosis of the prostate].

100 patients, 60 affected by prostatic pathology and 40 normal, underwent ultrasonography using a transabdominal suprapubic approach, with a diagnostic accuracy of 88% and no instances of false negatives. The advantages of transabdominal approach are discussed and the various sonographic appearances are explained and correlated to histological findings.

Adenocarcinoma↗
PubMed1986

[Preoperative localization of non-palpable breast lesions].

The effectiveness of real-time sonography and mammography are examined in localizing with a hookwire (introduced via a straight needle) the nonpalpable breast lesions. The method, used for surgery or biopsy, was successful in a series of 13 patients with non-palpable breast lesions, 4 affected by carcinoma.

Breast Neoplasms↗
PubMed1985

Asymmetrical lipomatosis: report of two cases.

We report on two patients with an asymmetrical expansion of fat tissue. At computed tomography, lipomatous tissue proved to be superficially located in one patient and both subcutaneously and deeply located in the second. Signs and symptoms of a peripheral neuropathy were observed in both patients, who were otherwise asymptomatic. The lipolytic activity in post-heparin plasma was normal in both patients. The fat cell size of lipomatous tissue, obtained in one patient by percutaneous needle biopsy, was higher than that of contralateral, uninvolved adipose tissue. The adipose tissue lipoprotein lipase activity in lipomatous tissue was higher than that in normal tissue. High density lipoprotein (HDL), HDL2 and HDL3 cholesterol values were elevated in both patients but not exceeding 1 standard deviation the values of age and sex matched controls. Isoprenaline-stimulated lipid mobilization was similar in lipomatous and in control tissue.

Adipose Tissue↗
PubMed1985

[Preoperative ultrasonic diagnosis of metastasis to the cervical lymph nodes from otorhinolaryngeal neoplasms].

The results of a study on 30 patients with ear, nose and throat cancers are discussed; a comparison of clinical, ultrasound and histological findings for the preoperatory evaluation of the cervical lymph nodes has been carried out. Ultrasound technique is an excellent method of investigation for the staging "N" of such neoplasms; its contribution is very important for the following therapeutic program.

Diagnosis, Differential↗
PubMed1985

[Radiologic changes of the hands in psoriatic rheumatism].

The radiological features of the psoriatic arthritis, already known in the literature, are reviewed by the authors. On the basis of their own record (33 patients), they underline 3 peculiar features of the disease: thickening of the soft tissue involving the whole finger, three joints involvements of the same finger, association of subchondral proliferation and periostitis.

Arthritis↗