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Biomedical subjects

C Martinelli

Publications and source records attributed to C Martinelli.

At least 19 recordsLinked to original sources
PubMed1991

[Late effects on the hypothalamo-pituitary function after the treatment of parasellar tumors].

Long term follow-up of patients submitted to treatment of parasellar tumours region is important for the detection of late therapeutic complications. In this study the authors conducted an evaluation of six patients with craniopharyngioma, one with germinoma, one with meningioma, and one epidermoid cyst. All above tumours were localized at parasellar region. Six out of nine patients had been treated both by surgery and by radiotherapy and the other three surgically only, on an average 3.8 +/- 3.2 years before this observation was carried out. Five patients were female with their ages average 24.3 +/- 18.8 years old. Evaluation consisted: in the first place, an intravenous infusion of thyrotropin-releasing hormone (TRH, 200 micrograms), gonadotropin-releasing hormone (GnRH, 100 micrograms), and insulin tolerance test (0.1 IU/Kg, regular insulin); and secondly, in measurements of pituitary hormones secretion at different time points--0, 20, 40, 60 and 80 minutes. We found both diminished response of growth hormone and cortisol in all the patients. Seven out of nine patients did not have adequate response to follicle-stimulating hormone. Three out of nine responded unsatisfactory to luteinizing hormone. Four out of nine showed inadequate responses to prolactin as well as, two out of eight to thyrotropin. We concluded that: (a) growth hormone and cortisol deficiency are the most frequent finding in these patients; (b) post-radiotherapy lesions can be located in the hypothalamus or pituitary, or even in both; (c) hypophysial and hypothalamic cells sensitivity to irradiation is different, according to their respective hormones; and (d) it is necessary a frequent endocrinologic follow-up of patients to detect late hormonal deficiencies.

Adolescent↗
PubMed1990

Radiographic and computed tomographic findings in hydatid disease of bone.

Twenty-six patients with hydatid disease of bone were evaluated by means of radiography and conventional tomography. Fourteen patients underwent high resolution computed tomography (CT). In two patients with vertebral disease, magnetic resonance imaging (MRI) examination was also performed. Seventeen patients underwent surgery with histological examination in all. Based on the surgical data and gross examination of the specimen, the radiographic and CT findings have been reviewed to identify the most characteristic radiographic features and to assess the role of CT. Radiographic finding of hydatidosis are rarely typical in bone, and only in a few patients can CT contribute to the diagnosis. On the other hand, the local extension of the lesion both in bone and in soft tissues, which is essential in planning surgery, is always demonstrated well by CT.

Adolescent↗
PubMed1987

CT diagnosis of lumbosacral conjoined nerve roots. Findings in 19 cases.

The authors report the observations derived from CT evaluation of 19 cases of lumbosacral conjoined nerve roots; 11 of these have been confirmed by lumbar myelography and/or at surgery. They conclude that CT without intrathecal metrizamide allows the recognition in most cases of the presence of conjoined nerve roots and to differentiate them from a herniated disk fragment; this is especially useful to avoid surgical damage of anomalous roots.

Adult↗
PubMed1987

Muscle CT, biopsy and EMG in diagnosis of neuromuscular diseases.

The diagnostic value of EMG and muscle biopsy has been compared with muscle CT in 53 patients with neuromuscular diseases. CT concordance with clinical diagnosis was found in 62% of myopathies and was highest in Duchenne PMD and scapulo-peroneal myopathy and very low in metabolic and inflammatory myopathies. In neurogenic diseases muscle CT agreed with clinical diagnosis in 63% of patients: the highest concordance was found in acquired polyneuropathies.

Biopsy↗
PubMed1987

[CT evaluation of sacrococcygeal chordoma].

From June 1985 to September 1986, eight patients affected by sacrococcygeal chordoma were examined by means of conventional radiography and tomography first, and then by high-resolution CT. All patients underwent surgery and an histologic examination of the surgical specimen was carried out. CT always allowed to detect the sacro-coccygeal neoplasm, which looked like a solid non-homogeneous mass; in 50% of cases coarse calcifications were found. CT made it possible to evaluate the growing side of the tumor, its relation with the adjacent anatomical structures-especially the longitudinal extension and the involvement of the sacral hiatus; these findings proved to be very useful in order to choose the most appropriate surgical technique. CT findings also suggested the nature of the tumor but rarely allowed a definitive diagnosis. CT is, at any rate, mandatory in order to evaluate the real extent of the tumor and to plan surgery.

Adult↗
PubMed1987

[Value and limitations of computerized tomography in the study of benign tumors of the bone].

In order to stress the role of CT in the evaluation of benign tumors of the bone the authors studied by means of a high-resolution CT scanner 74 patients that later underwent surgery (70 cases) and histological examination (all cases). CT findings were compared with the surgical and histological data. The results prove that the diagnostic contributions of CT are less important in the evaluation of benign than in malignant bone tumors. The major contributions of CT were:--the capability of detecting the presence of osteoid osteoma not found by means of conventional radiographic techniques;--differentiation between benign osteochondroma and peripheral chondrosarcoma by measurement of the peripheral cartilaginous cap: this criterion, on the other hand, does not seem to be always reliable and useful;--differential diagnosis of different types of cystic and fibrocystic diseases (simple and aneurysmal bone cyst, fibrous dysplasia);--evaluation of soft-tissue tumoral masses and of their extra-osseus extent in giant cell tumor and chondroblastoma; this allows us to establish the real extension of the tumor and to plan surgery more accurately.

Adolescent↗
PubMed1986

[Computerized tomography in spinal osteoblastoma. Observations in 10 cases].

In order to stress the role of computed tomography (CT) in the evaluation of benign spinal osteoblastoma, the authors examined by CT 10 patients with surgically and histologically proved osteoblastomas of the spine. Basing on surgical and histopathological findings CT proved to be a very important method for attesting the presence of the tumors (usually showed by radiographic examination), and specially for their staging and follow-up. CT in fact showed the real extent of the tumor into the spinal canal and towards the paraspinal soft tissues, and allowed the early detection of post surgical relapses. The authors conclude that CT is a primary diagnostic modality for preoperative planning and follow-up of benign osteoblastoma.

Adolescent↗