Synchronous pleuro - renal solitary fibrous tumors: a new clinical-pathological finding.

Solitary fibrous tumors of the pleura (SFTP) are rare mesenchymal neoplasms usually originating from the visceral pleura, but sometimes found in other sites like the orbit, dura, paranasal sinus, upper respiratory tract, thyroid, sublingual gland, lung, periosteum, cauda equina, ovary, scrotum and testicular tunica vaginalis. Solitary fibrous tumor of the kidney is extremely rare with fewer than 15 reported cases in modern English literature. To the best of our knowledge, this report describes the first known case of synchronous SFTP in the left parietal pleura and left kidney. The SFTP of the pleura, widely compressing and displacing the left lower lung lobe, was resected via left thoracotomy, whereas the renal SFTP, diagnosed by echo-guided histological biopsy, was closely monitored by computed tomography scan and ultrasound. After a one-year follow-up no recurrence was detected in the left hemithorax and the renal lesion remained stable.

Pneumocephalus after Pancoast's tumor surgery: to be or not to be conservative?

We report a case of a 62-year-old man affected by Pancoast's tumor who developed pneumocephalus 17 days after right upper lobectomy with en bloc resection of the first three ribs and C8-D1 branches of the brachial plexus. The patient complained of aphasia, disorientation and sphincterial release. A chest and brain-CT scan showed a right apical pneumothorax associated with a massive pneumocephalus of the ventricles and of the subarachnoidal spaces. A pneumoperitoneum was also seen. The patient was treated using pleural drainages, Trendelenburg's position and antibiotic therapy. Clinical and radiological remission was achieved after 12 days of additional hospital stay.

A safe and effective method for an immediate bronchopleural fistula repair.

Bronchopleural fistula (BPF) is a well recognized and potentially fatal complication of major thoracic surgery and several strategies regarding its prevention and subsequent management have been described. An immediate BPF occurring intraoperatively after bronchial closure is a rare event and is usually treated by bronchial stump reamputation and/or hand-suture reinforcement by mattress suture, or myoplasty. We report a simple and successful technique, using azygous vein flaps, to repair an intraoperative BPF associated to a small bronchial dehiscence occurred after a right pneumonectomy in a 70-year-old diabetic man receiving induction chemotherapy treatment.

[Technique, results and impact of induction chemotherapy in sleeve lobectomy for lung cancer]. / Tecnica, risultati e ruolo della chemioterapia di induzione nella lobectomia con resezione/anastomosi bronchiale (sleeve).

AIM: The aim of this study was to evaluate the safety of continuous nonabsorbable (3/0 polypropylene) sutures for sleeve lobectomy, and the influence of induction chemotherapy on postoperative outcome in patients with lung malignancies. METHODS: A review of a prospective database of a single surgeon identified 41 consecutive patients who underwent sleeve lobectomy from May 1998 to July 2003. Bronchial reconstruction was done placing two 3/0 polypropylene sutures at the far side of the cartilaginous wall and subsequently fixed. Afterwards, two running sutures were performed in order to obtain a telescopic anastomosis. RESULTS: Twenty-four patients (59%) underwent induction chemotherapy. There were 31 right upper, 3 left lower ''reverse'', and 7 left upper sleeve lobectomies with radical lymph node dissection. Eight patients underwent reconstruction of the pulmonary artery. There were 34 non-small cell lung cancers, 3 limited small cell lung cancers, 1 neuroendocrine large cell carcinoma, and 3 bronchial carcinoid tumors. N2, N1, and N0 diseases were found in 13, 12 and 16 patients, respectively. Post-operative morbidity and mortality were 14.5% (n=6) and 4.8% (n=2) (1 patient, 4%, after induction chemotherapy). The rate of postoperative anastomotic complications was 2.4% (n=1). Late bronchial stenosis developed in 3 cases, but all were successfully medically treated. Twenty-nine patients are still alive, 27 without evidence of disease. The overall 2-year probability of survival (Kaplan-Meier) was 59%. Induction chemotherapy did not influence postoperative morbidity/mortality (chi2 test: P=0.64/P=0.56). CONCLUSIONS: Continuous nonabsorbable suture for sleeve lobectomy is quick and technical easy to perform, with low postoperative morbidity/mortality; induction chemotherapy does not influence postoperative outcome in these patients.

Extended redo sleeve resection for postoperative dehiscence after right upper bronchoplasty.

Complete anastomotic dehiscence after sleeve resection is a dramatic and often fatal event requiring an extremely aggressive and risky treatment; completion pneumonectomy represents the sole effective therapeutic option to rescue the patient, but postoperative mortality after this procedure is high. We report a case successfully treated by extended redo carinal sleeve resection after full bronchial dehiscence. This option should be taken into account in such a complication, mainly in patient with compromised respiratory function.

Peripheral burst of tumor-specific cytotoxic T lymphocytes and infiltration of metastatic lesions by memory CD8+ T cells in melanoma patients receiving interleukin 12.

Systemic effects on T-cell-mediated antitumor immunity, on expression of T-cell adhesion/homing receptors, and on the promotion of T-cell infiltration of neoplastic tissue may represent key steps for the efficacy of immunological therapies of cancer. In this study, we investigated whether these processes can be promoted by s.c. administration of low-dose (0.5 microg/kg) recombinant human interleukin-12 (rHuIL-12) to metastatic melanoma patients. A striking burst of HLA-restricted CTL precursors (CTLp) directed to autologous tumor was documented in peripheral blood by a high-efficiency limiting dilution analysis technique within a few days after rHuIL-12 injection. A similar burst in peripheral CTLp frequency was observed even when looking at response to a single tumor-derived peptide, as documented by an increase in Melan-A/Mart-1(27-35)-specific CTLp in two HLA-A*0201+ patients by limiting dilution analysis and by staining peripheral blood lymphocytes (PBLs) with HLA-A*0201-melanoma antigen-A/melanoma antigen recognized by T cells (Melan-A/Mart)-1 tetrameric complexes. The CTLp burst was associated, in PBLs, with enhanced expression of T-cell adhesion/homing receptors CD11a/CD18, CD49d, CD44, and with increased proportion of cutaneous lymphocyte antigen (CLA)-positive T cells. This was matched by a marked increase, in serum, of soluble forms of the endothelial cell adhesion molecules E-selectin, vascular cell adhesion molecules (VCAM)-1 and intercellular adhesion molecules (ICAM)-1. Infiltration of neoplastic tissue by CDS+ T cells with a memory and cytolytic phenotype was found by immunohistochemistry in eight of eight posttreatment metastatic lesions but not in five of five pretreatment metastatic lesions from three patients. Increased tumor necrosis and/or fibrosis were also found in several posttherapy lesions of two of three patients in comparison with pretherapy metastases. These results provide the first evidence that rHuIL-12 can boost the frequency of circulating antitumor CTLp in tumor patients, enhances expression of ligand receptor pairs contributing to the lymphocyte function-associated antigen-1/ICAM-1, very late antigen-4/VCAM-1, and CLA/E-selectin adhesion pathways, and promotes infiltration of neoplastic lesions by CD8+ memory T cells in a clinical setting.

Pilot study of subcutaneous recombinant human interleukin 12 in metastatic melanoma.

The aim of this study was to evaluate the safety profile of s.c. administered recombinant human interleukin 12 (rHuIL-12). Pharmacokinetics and pharmacodynamics of rHuIL-12 and any evidence of antitumor effect were also considered. Ten pretreated patients with progressive metastatic melanoma were enrolled in this pilot study. Patients received a fixed dose of rHuIL-12 (0.5 microgram/kg) for two identical 28-day cycles, with injections given on days 1, 8, and 15 of each cycle. In case of any evidence of response or disease stabilization, the treatment was continued for two further 28-day cycles. Toxicity mainly consisted of a flu-like syndrome. Transient increases in transaminasemia (6 of 10 patients) and triglyceridemia (8 of 10 patients) were observed. Peak serum IL-12 levels were reached 8-12 h after the first injection in all patients; no serum IL-12 was detectable in 6 of 9 evaluable patients after the last injection of the second cycle. No antibody response to rHuIL-12 could be detected in any of the patients. A marked, transient reduction in circulating CD8+ and CD16+ lymphocytes and neutrophils was observed after the first administration and high levels of serum IFN-gamma and IL-10 were detected in all patients within 24-48 h. Tumor shrinkage, not reaching partial or complete remission, involved the regression of s.c. nodules (2 of 3 patients), superficial adenopathies (1 of 3 patients), and hepatic metastases (1 of 3 patients); regressions were detected after the first cycle of treatment and were maintained in spite of progression at different sites. s.c. rHuIL-12 treatment was well tolerated and had marked effects on immune parameters and potential antitumor activity.

B-cell activation during HIV-1 infection. III. Down-regulating effect of mitogens.

Spontaneous in vitro production of HIV-1-specific antibodies, a hallmark of infected subjects, is often down-regulated by the addition of pokeweed mitogen. We observed that a decrease in such ongoing anti-HIV-1 antibody synthesis could also be induced in cultures from most patients by addition of phytohemagglutinin and Concanavalin A, but not by Epstein-Barr virus, a selective B-cell mitogen. In most cases, this down-regulatory effect of mitogens was evident within the first 24 h of culture. The observed mitogen-associated decrease in spontaneous antibody synthesis was prevented by treating peripheral blood mononuclear cells with agents inhibiting non-major histocompatibility complex-restricted cytotoxic activity or by adding third-party cells to the cultures. In most cases, the mitogen-induced effect was also counteracted by removal of T lymphocytes or CD8+ T-cell sub-population. These findings recall a similar phenomenon observed in normal subjects following intentional immunization, and indicate that mitogen-induced down-regulation of spontaneous in vitro anti-HIV-1-antibody production most probably occurs through a lectin-dependent cytotoxic effect on activated B cells.

Treatment of advanced renal cell cancer with sequential intravenous recombinant interleukin-2 and subcutaneous alpha-interferon.

Starting from in vitro studies suggesting synergistic antitumour activity against renal cell cancer (RCC) of recombinant interleukin-2 (rIL-2) and alpha-interferon (IFN), a phase II trial was initiated to test the clinical activity of this combination. The two cytokines were administered sequentially, with the aim of reducing the risk of additive toxicity and enhancing the immunological reaction against the tumour. The original treatment schedule consisted of rIL-2 18 x 10(6) U/m2/day by continuous intravenous infusion for 120 h days 1-5, and alpha-IFN 2b, at a flat dose of 9 x 10(6) U by subcutaneous or intramuscular injection thrice in a week, from day 8 to 28. Treatment was planned to be continued for six or more 28-day cycles, depending on clinical response. 12 patients were treated according to this schedule; as some cardiovascular toxicity was experienced in this set of patients, 11 further patients were treated with half-dose rIL-2 (i.e. 9 x 10(6) U/m2/day). 17 out of 23 enrolled patients completed at least one cycle of treatment and were evaluated for response. We observed six major responses [one complete response (CR) + five partial responses (PR)] for an objective response rate of 35% [95% confidence interval (CI) 17-59%]. 5 additional patients achieved stabilisation of disease; one of them reached CR after surgical extirpation of a lung mass. Sites of response included lung, nodes and bone. Duration of response is 12+ months for CR; 17, 16, 12+, 9 and 9 months for PRs. Median survival is 16 months. Response was not significantly different between full-dose and half-dose rIL-2. Considering stable disease (SD) as responses, there seemed to be a higher chance of response for patients with smaller tumour burden (P = 0.032). The toxicity of rIL-2 treatment, mainly cardiovascular, was substantial; 9 patients experienced severe cardiotoxicity, consisting of major arrhythmias, myocardial ischaemia, reduction of ejection fraction measured with heart radionuclide scan, and were excluded from continuing treatment. Other rIL-2-related toxicities forcing exclusion from the study were severe thrombocytopenia (1 case), and generalised exfoliative dermatitis requiring steroids (1 case). Otherwise, treatment was well tolerated; rIL-2-related toxicities promptly recovered after rIL-2 discontinuation in the majority of cases, and no treatment-related deaths were reported. The half-dose rIL-2 regimen was significantly less toxic in terms of hypotension (P = 0.014), fever (P = 0.014), oliguria (P = 0.042), serum creatinine elevation (P = 0.009) and prothrombin time elongation (P = 0.038).(ABSTRACT TRUNCATED AT 400 WORDS)

TCR expression and clonality analysis in peripheral blood and lymph nodes of HIV-infected patients.

We compared the T cell receptor (TCR) V beta gene family repertoire in peripheral blood mononuclear cells (PBMC) and lymph node (LN) cells from 7 human immunodeficiency virus (HIV)-infected patients and 3 seronegative healthy controls. Virtually all the V beta family specificities were represented in patient PBMC and LN cells, and mean values for each specificity were comparable to figures in seronegative controls. In 4 patients, however, some V beta gene segment transcripts were overrepresented in the LN compartment, compared to the peripheral blood counterpart. To ascertain whether this phenomenon was due to polyclonal or oligoclonal expansion of T cells bearing the relevant V beta gene product, we sequenced the entire CDR3 region of a panel of 238 PCR clones corresponding to the V beta transcripts expanded in LN; as control, the same regions were cloned and sequenced in patient's PBMC, and in PBMC and LN cells from seronegative individuals. This analysis disclosed preferential usage of J beta 2 genes in PBMC and LN cells from both seropositive patients and controls, regardless of the V beta gene segment considered, thus indicating that this skewness in the V beta-J beta repertoire could be a consistent feature of at least a part of the V beta repertoire in different lymphoid compartments, regardless of the pathologic conditions. In addition, in LN from HIV seropositive patients we found the presence of recurrent TCR rearrangements, accounting for 8-23% of the generated clones, in each of the 4 V beta specificities analyzed; recurrent sequences were not found in PBMC from patients nor in PBMC and LN cells from seronegative controls. These findings suggest that antigen-driven oligoclonal T cell expansions may occur in vivo in lymphoid organs of HIV seropositive patients.

Stair-climbing test to evaluate maximum aerobic capacity early after lung resection.

BACKGROUND: The aim of this study was to investigate the extent of reduction in maximum oxygen consumption in the early postoperative period after lung resection for lung carcinoma. METHODS: A total of 115 patients who underwent lung resection (95 lobectomies, 20 pneumonectomies) performed a maximal stair-climbing test the day before operation and the day of discharge from the hospital (8 +/- 3.3 days after the operation). RESULTS: The postoperative test showed a 15% reduction in maximum oxygen consumption (VO2max) with respect to the preoperative test (Student's t test, p < 0.0001). This reduction was greater after pneumonectomy (21.4%) than after lobectomy (14%) (Student's t test, p < 0.05). A multiple regression analysis showed that the only significant independent predictors of both preoperative and postoperative VO2max were the age of the patient and the level of arterial oxygen content. CONCLUSIONS: The early postoperative reduction in VO2max was greater after pneumonectomy than after lobectomy and the exercise performance was significantly influenced by the level of arterial oxygen content both before and early after the operation.

Bizarre leiomyoma of the epididymis. A case report.

A case of epididymal leiomyoma with bizarre nuclei is described. A 48-year-old man presented with a painless scrotal mass raising the suspicion of a testicular neoplasm. A seven-year follow-up revealed no evidence of local recurrence or distant metastasis. To personal knowledge, this is the first reported case of bizarre leiomyoma of the epididymis.

Management of true splenic artery aneurysms. Two case reports and review of the literature.

Few series of splenic artery aneurysms (SAA) have been reported, but today asymptomatic SAA are detected with increasing frequency. Their importance lies from their potentially fatal consequences as life-threatening hemorrhage. SAA management still remains controversial as reported in this review. Our 2 patients treated with resection of the aneurysms, both located in the middle third of the splenic artery. Some authors demonstrated that when splenic artery has been ligated (or embolized) and the patients remain anatomically splenic, they may not retain any splenic function. Laparoscopic SAA ligation repair appears to be optimal and useful for aneurysms protruding from the pancreas and it is gaining interest because clinical recovery is rapid with a poor morbidity and economic and cosmetic advantages. Transcatheter embolization too offers a temporary control in urgency to stop hemorrhage and go back at later date to make much better elective operation. Endovascular interventions as percutaneous embolization has recently gained popularity: it offers a safe alternative or adjunctive therapy to traditional surgery. We hope in the future instrumentation will likely improve so that this procedure can be done percutaneously by development of prosthetic devices in the 21th century.

[Carcinoma of the common bile duct]. / Il carcinoma della via biliare principale.

The clinical courses of 18 patients with extrahepatic bile duct carcinoma operated on between 1960 and 1979 are reviewed retrospectively. The preoperative and intraoperative diagnostic difficulties due to marked peritumor sclerosis are pointed out. The location of the lesion appeared to bear the most important relationship to prognosis: the lesions located in the upper and middle thirds of the extrahepatic biliary system are often invasive of adjacent vascular structures and, hence, unresectable, necessitating a proximal biliary-enteric anastomosis or intubation to alleviate jaundice and pruritus. A more aggressive operative approach, however, will result in a higher survival rate, as shown in personal experience for lower third lesions resected by Whipple's procedure.

[Pancreatic injuries]. / I traumi pancreatici.

Twenty patients were operated on for pancreatic trauma from 1960 to 1980. 8 (40%), without ductal lesions, were treated by drainage alone; 4 (20%) by distal resection; 3 (15%) by duodenal diversion; 1 by pancreatoduodenectomy and 1 by an anterior Roux-en-Y pancreatojejunostomy. Penrose and sump drains was used in all patients. Mortality rate was 20% (4 p.). Pancreas related complications occurred in 7 p. (35%). Particular emphasis is placed on general principles of management of pancreatic injuries to decrease mortality and morbidity.

[Bilateral splanchnicectomy according to the Dubois method in pain caused by chronic pancreatitis and by inoperable neoplasms of the pancreas]. / La splancnicectomia bilaterale second Dubois nelle algie da pancreatite cronica e da neoplasie inoperabili del pancreas.

The authors report a personal series of 12 p. undergoing splanchnicectomy through Dubois' transhiatal approach because of abdominal pain of pancreatic origin. They underline this technique produces immediately a total, lasting pain relief, improving quality of life of these patients.

[The surgical consequences of topographical variations of the implantation of the papilla in the duodenum]. / Le conseguenze chirurgiche delle variazioni topografiche dell'impianto della papilla nel duodeno.

The Authors underline the importance of anatomical variations concerning the location of the duodenal papilla. In roughly 75% of cases this structure pierces the duodenal mucosa at D2 and at the level of the lower flexure, in 20% at D3 and in about 6% at D1. Intraoperative cholangiography is most useful to spot the papilla, its position is fundamental from an anatomo-surgical point of view both when this structure is placed at a high level (when performing a gastro-duodenal resection), and when located at D3 level, if sphincterotomy is required. In this latter case the usual incision at 12 hours should be carried out at 9 hours instead in order to avoid surgical damage to the canal of Wirsung running vertically and along the common bile duct.

[Our experience in the preservation of the rectum in the surgical treatment of ulcerative rectocolitis]. / La nostra esperienza in tema di conservazione del retto nel trattamento chirurgico della rettocolite ulcerosa.

The Authors report a personal series of 42 cases of Ulcerative colitis seen over a 12 year period. (1969-1980). These patients underwent total colectomy with preservation of the rectum. Intestinal canalization was restored by means of an ileo-rectal anastomosis performed either with colectomy or at a later stage. Results are satisfactory as an improvement of general conditions occurred. Normalization of the intestinal function was observed in 85% of cases. Rectal lesions, periodically kept under control with endoscopy and hystologic examination, improved noticeably. In a few cases a total recovery was attained with an adequate, postsurgical, topic therapy. No cancer onset in the rectal stump had been recorded thus far among these patients. In the light of the Author's experience, total colectomy with rectal preservation represents a sensible solution for the surgical treatment of Ulcerative colitis.

[Comparative analysis of manual and mechanical sutures in the surgery of neoplasms of the esophagus and the cardia]. / Analisi comparativa tra suture manuali e meccaniche nella chirurgia delle affezioni neoplastiche dell'esofago e del cardias.

The authors analyse 50 sutures by hand and 50 by stapling device in oesophagocardial surgery, and compare them as to time of performance, number and quality of complications and influence on the protraction of stay in hospital after operation. The conclusions indicate the sutures by device as the most reliable and safe, susceptible to supplant, although not totally, the techniques by hand.

[Treatment of bleeding esophageal varices by esophago-gastric devascularization and esophageal transection with EEA stapler]. / Il trattamento delle varici esofagee sanguinanti mediante devascolarizzazione esofago-gastrica e transezione esofagea con suturatrice meccanica EEA.

The authors report their experience in the urgency surgery of oesophageal varices on a range of 24 patients operated in the years 1979 and 1980. In consideration of the utter seriousness of this pathology, they consider the direct operations of resection-anastomosis and devascularization of thoracic oesophagus and gastric bottom the most suitable to face the problem. Such operations, burdened by a relatively low mortality (12.5%), get the immediate step of hemorrhage and, 3 years after the first operations performed, gave good remote results. Such assertion expects a further confirmation from a longer follow-up.