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P Barigozzi

Publications and source records attributed to P Barigozzi.

8 recordsLinked to original sources
PubMed1995

Limited invasiveness to assess retroperitoneal spread in stage I-II ovarian carcinoma.

OBJECTIVE: To evaluate the incidence of retroperitoneal metastases, survival rate and site of recurrence in early ovarian tumors undergoing limited retroperitoneal surgery. METHOD: Three hundred seventy-three consecutive patients underwent assessment of the retroperitoneum consisting of intraoperative palpation with or without biopsies. RESULTS: Retroperitoneal metastases were detected in 10 stage-I tumors (3.2%) and in 10 stage-II tumors (16%). The risk was inversely related to tumor differentiation. Palpation revealed metastases in 10 cases. During follow-up, none of the borderline tumors (1.9% of stage-I grade-1 node-negative, 2.7% of grade-2 and 7.0% of grade-3 tumors) recurred in the retroperitoneum. In stage II, two recurrences were observed in grade-2 tumors (11%) and one in grade 3 (4.5%). CONCLUSION: Limited retroperitoneal surgery enables satisfactory outcome in early ovarian cancers. Risk of retroperitoneal recurrence is minimal in grade 1 and non-existent in borderline tumors. Less differentiated tumors have low risk but further investigation of the therapeutic role of lymphadenectomy is justified.

Adult↗
PubMed1993

Radioendocrine therapy of brain tumors with the long acting opioid antagonist naltrexone in association with radiotherapy.

AIMS AND BACKGROUND: Malignant gliomas remain untreatable as the different therapeutic combinations are generally only palliative. Recent experimental evidence suggests that endogenous opioid peptides are involved in brain tumor growth. The aim of the present study was to evaluate the effect on survival of concomitant administration of the long-acting opioid antagonist naltrexone (NTX) in patients with malignant astrocytomas treated with radiotherapy (RT). METHODS: 21 patients with high grade malignant gliomas were randomized to receive RT alone or RT plus NTX. The dose of RT was 60 Gy. NTX was given orally at a dose of 100 mg every other day without interruption until disease progression. RESULTS: The objective tumor regression rate in patients treated with RT plus NTX was higher than that of those treated with RT alone but not significantly so. On the contrary, the percentage of survivals at 1 year was significantly higher in patients treated with RT plus NTX than in those treated with RT alone (5/10 vs 1/11, P < 0.05). NTX therapy was substantially well tolerated in most patients. CONCLUSIONS: The finding of longer survival in brain tumor patients treated with RT plus NTX than in those who received RT alone suggests in vivo involvement of endogenous opioid peptides in regulating the growth of malignant astrocytomas.

Adult↗
PubMed1993

Severe osteoporosis and multiple vertebral collapses in a child during treatment for B-ALL.

The incidence of bone lesions at diagnosis of childhood acute lymphoblastic leukemia (ALL) is relatively high. However, no cases of severe osteoporosis with multiple vertebral collapses secondary to treatment in children with ALL have been reported. We report the case of a 9-year-old-boy with B-ALL, with no bone lesions at the diagnosis that, following the 4th block of aggressive chemotherapy (protocol B-ALL BFM 86), presented severe back pain and functional impairment with diffuse osteoporosis and vertebral collapses. He was treated with calcitonin, vitamin D, calcium, physical therapy and orthopedic corset. Osteoporosis progressed slowly during the following 2 months of chemotherapy and the boy developed dorsal kyphosis. After discontinuing antiblastic treatment progressive clinical improvement was observed, with complete resolution of kyphosis in about 6 months. An almost complete bone recovery was seen on X-ray survey at 26-months follow-up.

Antineoplastic Combined Chemotherapy Protocols↗
PubMedDate not supplied

[Digital radiography in urography].

The clinical utility was evaluated of a computed radiographic system in urography. The system (FCR 101, Philips Medical Systems, Inc., Shelton, CT) is based on a photo-stimulatable phosphor screen (imaging plate) for X-ray image detection and storage. The X-ray information recorded on the imaging plate is converted into digital from and processed by means of a computer. After processing is completed, the digitized image is reversed back to analogic signals, which modulate the intensity of a laser beam scanning the image on a single-emulsion film (Fuji CR 633). Two hundred IVP's were obtained in four groups, of 50 patients each, with normal azotemic values by rapid infusion of a low osmolality contrast medium (iopamidol 150 mgI/ml). While conventional radiographs were performed on the first group of patients with the injection of 0.6 gI/kg body weight of contrast medium, digital examinations were carried out, in the remaining three groups, with the injection of 0.6, 0.3 and 0.12 gI/kg, respectively. The digital images were processed with the "Abdomen-routine" program. A specific algorithm was implemented in order to reduce the excessive contrast resolution of the bladder, which is due to the characteristics of the nonionic contrast medium and enhanced by the reading program. The image details were evaluated by two observers and then statistically analyzed with nonparametric tests. Statistical analysis did not show any difference in the quality of digital and screen-film images. Image processing improved some inadequate images, by reducing the contrast resolution of the bladder, and allowed a better detection of some details. Low doses (0.3 gI/kg) of a low osmolality (150 mgI/kg) contrast medium were enough to obtain good images. Another biological advantage was obtained by a consistent radiation dose reduction (about 40%).

Adolescent↗