The mesenteric and antimesenteric site of the tumor as possible prognostic factor in colorectal cancer: 5-year survival analysis.

INTRODUCTION: Colorectal cancer is still one of the many factors of death both in males and in females. To date, the most important prognostic factors are mainly related to the pathological stage of the disease. AIM OF THE STUDY: The purpose of this study was to analyze the possible role of tumor circumferential localization on the colonic wall (mesenteric (M) or antimesenteric (AM)) as a possible prognostic factor. In this study, we compare the localization of the tumor with patient's survival. The hypothesis of this study is that M tumors, closer to blood and lymphatic vessels, should be more aggressive in terms of hematogenous and lymphatic spread compared to the AM tumors. PATIENTS AND METHODS: All patients undergoing curative resection for colorectal cancer were enrolled in this study; there was no statistical difference for age, sex and co-morbidity. The histopathological examination was carried out in the standard manner. Next, we have taken care to survival of neoplastic patients by examining of our 5-year follow-up archive: we divided patients in different groups concerning the different tumor stage and we compare these results with the different localizations of tumor at the operation. RESULTS: In 45% of cases, we were able to distinguish the different localizations M (160 patients) or AM (47 patients) and this difference is statistically significant (P<0.0001, Pearson Chi-Square-test (PCS-t)). The number of metastatic nodes is statistically higher in the M group compared to the AM group one (P=0.003949). Medium time of follow-up was 36.54 months; AM and M patients have a rather similar survival, only at the end the two curves seem to change but not in a significant manner. Only if we consider the difference between the two groups comparing T3 tumor can we observe a statistically significant difference (P<0.005). CONCLUSIONS: In conclusion, the localization of M or AM colorectal cancer is feasible in 45% of cases. M tumors have significantly more lymph nodes metastases but a better 5-year survival than AM tumors. A possible explanation for such results might be the different pattern of diffusion of cancer cells.

The mesenteric and antimesenteric location of colorectal cancer: the relationship with lymph nodes.

AIM: Purpose of the study was to evaluate if the circumferential location of colorectal cancer may be identified as a possible prognostic factor. The hypothesis is that tumours located on the antimesenteric (AM) side could have a better prognosis than tumours located on the mesenteric (M) side. METHODS: All patients undergoing curative resection for colorectal cancer were enrolled in the study. The specimens were sent to the pathologist to define the exact location of the tumour, the histological type, grading, T, N status as well as lymphatic, vascular and neural invasion, peritumoural lymphoid reaction, desmoplasia and microsatellite instability. Statistical analyses were performed using the test for proportions (with continuity correction), the Pearson Chi-square test and generalised linear models; p<0.05 were considered statistically significant. RESULTS: From August 2000 to August 2002, 255 patients were enrolled in the study. There was a significantly higher incidence of tumours located on the M (101) compared with the AM (37) site (p<0.0001). M located tumours were associated with higher numbers of metastatic lymph nodes (N1 and N2; p-value=0.014), whereas AM tumours were associated with involved lymph nodes in only 5/37 (13.5%) of tumours. There was no statistically significant relation between AM versus M location and T status: the Pearson Chi-Square test showed that the lymph node involvement and the location (M versus AM) are not statistically independent variables (p-value=0.014). CONCLUSIONS: Our preliminary results show that when M or AM tumour identification is possible, tumour location can be regarded as a prognostic factor. Further longer studies on recurrence rate and survival are required to validate these findings and the clinical usefulness of this putative prognostic factor.

[Colon recanalization after Hartmann's procedure. A challenge for the surgeon or a strategy to be changed?]. / La ricanalizzazione del colon dopo l'intervento di Hartmann. Un impegno per il chirurgo o una strategia da cambiare?

AIM: Restoration of colorectal continuity is the second step of the procedure originally described by H. Hartmann for the treatment of sigmoid colon cancers. It is a safe, but complex procedure, that needs a meticulous surgical technique and is associated with a significant morbidity in as many as 40% of cases. For this reason, many patients are not submitted to reversal of the colostomy. METHODS: The authors report their experience: 32 patients underwent colostomy closure after Hartmann's procedure during the last 8 years. RESULTS: The mortality rate was nil, but post-operative complications occurred in 12 patients (37.5%), namely: wound infection (11 patients) and anastomotic leak (2 patients). CONCLUSION: In light of this, it could be wiser to perform, in the patients affected with benign pathology, and in those affected with limited malignant pathology (T3), resection of the diseased segment of colon and primary anastomosis with temporary ileostomy, reserving Hartmann's procedure to patients unsuitable to one step treatment because of their poor general and local conditions.

[The axillo-pectoral muscle and Karl Langer: an anatomical variation and a rather unknown great anatomist]. / Il muscolo axillo-pettorale e Karl Langer: un'anomalia anatomica e un valente anatomico misconosciuti.

Langer's axillo-pectoral muscle is a musculotendinous structure, that is transversally situated in the axilla. It is an anatomic anomaly rather unknown, but important for the surgeon. The anatomic description of this structure, the clinical signs and the surgical implications are reported. Finally, the biography of Langer, who gave his name to the anomaly, is outlined.

[Angiosarcoma of the breast after conservative surgery and radiotherapy for early breast carcinoma. Description of a case]. / L'angiosarcoma della mammella dopo chirurgia conservativa e radioterapia per carcinoma mammario precoce. Descrizione di un caso clinico.

The occurrence of an angiosarcoma of the residual breast after conservative surgery and adjuvant radiotherapy for early mammary carcinoma is a very rare event. In western countries only 57 cases have been published in the literature (5 in Italy) since the first described case in 1987. Radiotherapy seems to be the most important etiological factor in the development of the neoplasm. Diagnosis is often delayed, owing to the "benign" aspect of the lesion. The only effective treatment is residual mastectomy, because chemotherapy is ineffective. The prognosis is often dismal, because of the aggressive behaviour of the lesion in most cases. The case of a patient with a multicentric secondary angiosarcoma of the breast recently operated on is described.

[Laparoscopic cholecystectomy. Our clinical experience from 1994 to 1996]. / La colecistectomia laparoscopica. La nostra esperienza clinica dal 1994 al 1996.

BACKGROUND AND AIM: Videolaparocholecystectomy is now regarded as the gold standard of treatment for lithiasis of the gallbladder. METHODS: The authors report a retrospective of 258 consecutive videolaparocholecystectomies performed by the Surgical Division of Valduce Hospital in Como between 1994 and 1996. The authors describe the indications for VLC, techniques for the induction of pneumoperitoneum and the realisation of VLC and the percentage and caused of conversion. RESULTS: During this period a steady reduction was noted in the number of laparotomic cholecystectomies and a parallel increase in cholecystectomies performed using a laparoscopic technique (69.2 vs. 30.8% in 1994; 76.4 vs. 23.2% in 1995; 91.1 vs. 8.9% in 1996). A gradual extension of the indications for laparoscopic surgery can be seen leading to the application of this technique in patients suffering from acute cholecystic infection, hydros or empyema of the gallbladder. Conversion were required in 25 cases in this series (9.7%). During the last year analysed there were a total of 9 conversions (7.9%) even though the percentage of acute cholecystitis accounted for 38.9% of all cases of cholecystectomy. CONCLUSIONS: In line with the experience of other centres, the authors, currently propose VLC as the treatment of choice for lithiasic pathologies of the cholecyst.

[Traverso-Longmire technique and quality of life in patients operated on for periampullary neoplasms. Clinical contribution]. / Tecnica di Traverso-Longmire e qualità di vita nei pazienti operati per neoplasie periampollari. Contributo clinico.

BACKGROUND: The surgical approach to periampullary cancers represents one of the major components of digestive tract surgery. Personal experience in the treatment of 21 patients affected with periampullary neoplasms, operated on between January 1994 and July 1996 is reported. METHODS: Ten duodenopancreatectomies (DP) have been carried out (DP), 2 total pancreatectomies (TP). The remaining patients underwent palliative surgery: the resecability index was 57%. Primary cancer site included head of the pancreas in 10 cases, ampulla of Vater in 1 case and duodenum in 1 case. DP and TP have been performed using the pylorus-preserving technique, proposed by Traverso-Longmire. RESULTS: No operative mortality was reported; the morbidity rate was 25%. Nasogastric tube has been left in place for a mean time of 8 days (range 6-12). The mean postoperative period was 20 days (range 11-54). Five patients subsequently died for progressive disease: 4 during the first year (mean survival time 9 months), 1 during the second year (survival time 17 months). The follow-up of the remaining patients ranges between 6 and 30 months. Endoscopy, performed at 3-6-12 months, revealed no anastomotic recurrences, but 1 benign jejunal ulcer. CONCLUSIONS: According to personal experience the Traverso-Longmire technique is an effective procedure to improve the quality of life of these patients having a so poor expectancy of survival.

[A case of teratoma of the urachus]. / Su un caso di teratoma dell'uraco.

The paper reports a case of teratoma of the urachus in a 53-year-old patient. The difficulties of diagnosing this pathology are underlined, in particular in relation to the rarity of the site of which no other examples have been reported in the literature.

[Dehiscence of anastomosis in surgery of the colon. Causes and prevention]. / Le deiscenze anastomotiche nella chirurgia del colon. Cause e prevenzione.

150 operations on the large intestine performed in 1976-81 are presented with the percentage of dehiscences following surgery. In considering the problem of fistulas arising on the colonic sutures, the more frequent aetiopathogenetic factors are examined. The percentages reported are compared with those produced by the best medical schools. Curves recommended in recent literature are also reported.

[Protective colostomy in surgery of the left colon]. / La colostomia di protezione nella chirurgia del colon sinistro.

2 groups of patients were given anterior rectal resections, one of the groups also receiving protective colostomy. Results show the usefulness of protective colostomy, not so much because it reduces the incidence of anastomotic dehiscence as because it minimizes the possible consequences of any such dehiscence.

Splenic lesions as complications of chronic pancreatitis. A case report.

Two cases of splenic complications occurring during chronic pancreatitis are reported. One patient with a splenic pseudocyst and the other with a ruptured spleen. From the two cases and from a review of the world literature, clinical symptoms, pathogenicity and diagnosis of this condition are described. Prophylactic splenectomy during surgery for chronic pancreatitis is suggested.

[Treatment of gastric cancer in the aged]. / Il trattamento del cancro gastrico nell'anziano.

The A. suggest a modification of Stojanovick primary technique in the treatment of gastric cancer in the elderly. They reviewed pathology of gastric resected patients with exclusion of duodenal transit and they foretell such a technique because of a quicker performance, the scantiness of post-operative complication and, at the end, the complete lack of malabsorption syndromes which are so frequent in gastric resected patients.