Significant overexpression of DVL1 in Taiwanese colorectal cancer patients with liver metastasis.

Undetected micrometastasis plays a key role in the metastasis of cancer in colorectal cancer (CRC) patients. The aim of this study is to identify a biomarker of CRC patients with liver metastasis through the detection of circulating tumor cells (CTCs). Microarray and bioinformatics analysis of 10 CRC cancer tissue specimens compared with normal adjacent tissues revealed that 31 genes were up-regulated (gene expression ratio of cancer tissue to paired normal tissue > 2) in the cancer patients. We used a weighted enzymatic chip array (WEnCA) including 31 prognosis-related genes to investigate CTCs in 214 postoperative stage I-III CRC patients and to analyze the correlation between gene expression and clinico-pathological parameters. We employed the immunohistochemistry (IHC) method with polyclonal mouse antibody against DVL1 to detect DVL1 expression in 60 CRC patients. CRC liver metastasis occurred in 19.16% (41/214) of the patients. Using univariate analysis and multivariate proportional hazards regression analysis, we found that DVL1 mRNA overexpression had a significant, independent predictive value for liver metastasis in CRC patients (OR: 5.764; 95% CI: 2.588-12.837; p < 0.0001 on univariate analysis; OR: 3.768; 95% CI: 1.469-9.665; p = 0.006 on multivariate analysis). IHC staining of the immunoreactivity of DVL1 showed that DVL1 was localized in the cytoplasm of CRC cells. High expression of DVL1 was observed in 55% (33/60) of CRC tumor specimens and was associated significantly with tumor depth, perineural invasion and liver metastasis status (all p < 0.05). Our experimental results demonstrated that DVL1 is significantly overexpressed in CRC patients with liver metastasis, leading us to conclude that DVL1 could be a potential prognostic and predictive marker for CRC patients.

Nonsurgical management of delayed splenic rupture after blunt trauma.

BACKGROUND: Delayed splenic rupture (DSR) is a rare manifestation of blunt splenic trauma, and splenectomy remains the primary treatment for patients with DSR. The purpose of this study was to review our experience with nonsurgical management of DSR with the use of splenic artery embolization (SAE) as an adjunct treatment. METHODS: This retrospective study included patients with DSR treated at our institution from January 2001 to December 2008. Management included initial resuscitation and close observation in the intensive care unit. Further interventions were based on the patient's hemodynamic status and followed a treatment protocol. These interventions included SAE or surgery. RESULTS: There were 15 patients included in the analysis. Three patients underwent emergent surgery, and 12 patients received nonsurgical management initially. Of these 12 patients, five underwent SAE. One of these five patients subsequently underwent splenectomy because of recurrent bleeding. Of the remaining seven patients who received nonoperative management, one required a splenectomy because of recurrent hemorrhage and hypotension. There were no mortalities; however, two surgery-associated complications occurred. The success rate of nonsurgical therapy was 83%. SAE was used for splenic salvage with a success rate of 80% (4 of 5). The overall failure rate of DSR was 33% (5 of 15). CONCLUSIONS: Nonsurgical management can safely be used in selected patients with DSR, especially for those with a good response to resuscitation. SAE is as effective for DSR as it is for acute splenic injury. Physicians should consider SAE as an option for the treatment of DSR.

Gallbladder carcinoma manifesting as acute cholecystitis: clinical and computed tomographic features.

BACKGROUND: Gallbladder carcinoma is uncommon and may manifest as acute cholecystitis. An accurate diagnosis is helpful for operative planning and this study attempted to explore the distinctive clinical and computed tomographic (CT) features for differentiating acute cholecystitis alone from that with contemporaneous gallbladder carcinoma. METHODS: This 20-year, retrospective study evaluated the CT features of 26 patients with surgically proven gallbladder carcinoma with clinical presentations of acute cholecystitis (carcinoma group). Thirty elderly patients with surgically proven simple acute cholecystitis were enrolled as age-matched controls (cholecystitis group). The clinical, laboratory, and CT findings were compared between the 2 groups. RESULTS: The carcinoma and cholecystitis groups showed no significant differences with respect to clinical symptoms (abdominal pain, fever, and jaundice), serum total bilirubin level, leukocyte count, percentage of segmented leukocytes, presence of gallstones, and CT features of pericholecystic stranding/fluid and focally increased enhancement of adjacent liver. Fifteen of the 26 (57.6%) patients in the carcinoma group exhibited diffuse gallbladder wall thickening on CT and the other 11 exhibited focal thickening or intraluminal masses. Beside female predominance, the patients in the carcinoma group had significantly higher serum aspartate/alanine aminotransferase and alkaline phosphatase levels, a thicker gallbladder wall, smaller volume, lower frequency of triple-layer gallbladder wall enhancement pattern, and a higher frequency of enlarged regional lymph nodes than those in the cholecystitis group. CONCLUSION: For elderly patients, especially women, presenting with acute cholecystitis and abnormal liver function, CT demonstration of focal gallbladder wall thickening, intraluminal masses, small gallbladder with diffuse wall thickening, and enlarged regional lymph nodes are suggestive of concurrent gallbladder carcinoma. Triple-layer gallbladder wall enhancement is suggestive of simple acute cholecystitis.

Risk factors for the outcome of cirrhotic patients with soft tissue infections.

GOAL: The aims of this study were to identify risk factors that influence outcomes of cirrhotic patients with soft tissue infections and to describe specific management for such patients. BACKGROUND: Soft tissue infections account for 11% of infections overall in cirrhotic patients and the severe form of necrotizing infection carries a high mortality rate. It is essential that clinicians make an early diagnosis and start appropriate treatment to improve outcomes of cirrhotic patients with soft tissue infections. METHODS: Cirrhotic patients who had been admitted to our hospital with the diagnosis of soft tissue infection from June 1, 2003 to June 1, 2005 were included in this retrospective study. Clinical manifestations, laboratory data, and microbiologic results were recorded and compared between survivor and nonsurvivor groups. RESULTS: There was a total of 118 episodes of admission for soft tissue infection with 26 episodes resulting in mortality and 92 in survival. The following clinical parameters showed significant differences between the 2 groups: Child-Pugh grade C, pain, altered consciousness, emergence of hemorrhagic bullae, and local injury. The following laboratory data showed significant differences between the 2 groups: appearance of band form, serum creatinine, serum albumin below 2.5 g/dL, serum bilirubin above 3 mg/dL, and prothrombin time prolongation greater than 5 seconds. Gram-negative bacterial infection was predominant in the nonsurvivor group and was statistically significant. Multivariate analysis showed that the emergence of hemorrhagic bullae and Child-Pugh grade C were independent predictive factors for outcome. CONCLUSIONS: When treating soft tissue infection in cirrhotic patients, especially in those with Child-Pugh C liver function or emergence of hemorrhagic bullae, it is essential to start surgical evaluation and specific broad-spectrum antibiotics early to reduce the high mortality associated with this disease.

Hemorrhagic bullae represent an ominous sign for cirrhotic patients.

Hemorrhagic bullae are a clinical manifestation of many underlying diseases, especially soft-tissue infection. The aim of this study was to evaluate the characteristics and prognosis of cirrhotic patients with hemorrhagic bullae. Fifteen patients with liver cirrhosis and hemorrhagic bullae had been admitted to Chang Gung Memorial Hospital, Kaohsiung, from January to December 2003. Their clinical courses were retrospectively reviewed in detail and all of the collected data were analyzed. This study puts emphasis on the clinical presentation and outcome of these cases. The mean age of patients was 55.0 +/- 12.1 years, and 12 patients were male. Prostration and unusual extremity pain were the two leading reasons to visit our Emergency Department. The hemorrhagic bullae were located on the upper or lower extremities and in one patient, on the whole body. In this series all hemorrhagic bullae were infection-related. Although aggressive treatment was started immediately upon arrival, 14 patients died of overwhelming sepsis and 12 patients died within 48 h from the emergence of hemorrhagic bullae. Hemorrhagic bullae in cirrhotic patients usually imply a fatal infection and Gram-negative bacteria are the most common pathogen. Appropriate antimicrobial therapy and early surgical intervention are necessary to achieve survival in these patients.

Left brachiocephalic vein perforation: computed tomographic features and treatment considerations.

OBJECTIVE: To report the clinical and computed tomographic findings of 5 cases of left brachiocephalic vein perforation (LBCVP). METHODS: The clinical and imaging features of 5 patients with LBCVP (1 woman, 4 men; mean age, 57.6 years) encountered over the last 2 decades were reviewed. RESULTS: Etiologies included left jugular central catheter penetration in 2 patients, blunt trauma in 2, and idiopathic in 1. All patients manifested acute chest pain with a widened mediastinum on chest radiographs. Characteristic computed tomographic features included a cord-like hematoma along the course of the left brachiocephalic vein associated with a left upper anterior mediastinal hematoma (AMH). Three clinically stable patients with AMH smaller than 5 cm convalesced after conservative treatment and 2 clinically unstable patients with AMH bigger than 7 cm recovered well after surgery. CONCLUSIONS: Computed tomography is helpful in diagnosing LBCVP. Under close surveillance, patients with stable LBCVP with AMH smaller than 5 cm may be managed conservatively. However, emergency surgery is warranted if there are any signs of instability.

Use of a refined operative strategy in combination with the multidisciplinary approach to manage blunt juxtahepatic venous injuries.

BACKGROUND: Despite continuous advances in traumatology, juxtahepatic venous injuries are still the most difficult and deadly form of liver trauma. Most deaths result from exsanguination, and reported mortality ranges from 50% to 80%. This is an evaluation on our experience with the management of this high mortality injury following a refined operative strategy. METHODS: This is a retrospective study of consecutive patients sustaining blunt juxtahepatic venous injuries. The management for these patients was mainly a refined operative strategy combined with a multidisciplinary approach. Preoperative conditions and the patient demographics were gathered. In addition, the number and type of interventional procedures, overall complications, and operative procedures were collected and analyzed. RESULTS: From January, 1996 to March, 2004, 19 patients (M:F = 13:6) with juxtahepatic venous injuries were included and all were managed operatively. The operative procedures included hepatectomy by finger fracture technique for direct repair (8), perihepatic packing (1), packing and hepatic artery embolization (1), packing and hepatic artery ligation (1), hepatorrhaphy and packing (5), packing followed by hepatectomy (2) and atriocaval shunt for direct repair (1). The survival rate for the packing group was higher than that of the direct repair group (75% versus 45%), but was not statistically significant (p = 0.352). Injury to the retrohepatic vena cava influenced the patient's survival significantly (p = 0.041). The overall survival was 58% (11/19). CONCLUSION: A well-defined operative strategy helps surgeons deal with the problem of blunt juxtahepatic venous injury, and its combination with multidisciplinary management will improve patient outcomes.

Effect of autologous blood donation on the central venous pressure, blood loss and blood transfusion during living donor left hepatectomy.

AIM: Autologous blood donation (ABD) is mainly used to reduce the use of banked blood. In fact, ABD can be regarded as acute blood loss. Would ABD 2-3 d before operation affect the CVP level and subsequently result in less blood loss during liver resection was to be determined. METHODS: Eighty-four patients undergoing living donor left hepatectomy were retrospectively divided as group I (GI) and group II (GII) according to have donated 250-300 mL blood 2-3 d before living donor hepatectomy or not. The changes of the intraoperative CVP, surgical blood loss, blood products used and the changes of perioperative hemoglobin (Hb) between groups were analyzed and compared by using Mann-Whitney U test. RESULTS: The results show that the intraoperative CVP changes between GI (n = 35) and GII (n = 49) up to graft procurement were the same, subsequently the blood loss, but ABD resulted in significantly lower perioperative Hb levels in GI. CONCLUSION: Since none of the patients required any blood products perioperatively, all the predonated bloods were discarded after the patients were discharged from the hospital. It indicates that ABD in current series had no any beneficial effects, in term of cost, lowering the CVP, blood loss and reduce the use of banked blood products, but resulted in significant lower Hb in perioperative period.

Deceased-donor liver transplantation: 10 years' experience at Change Gung Memorial Hospital-Kaohsiung Medical Center.

BACKGROUND: The purpose of this study was to summarize the outcomes we achieved using deceased-donor liver transplantation (DDLT) in the past 10 years at Chang Gung Memorial Hospital-Kaohsiung Medical Center (CGMH-KMC). METHODS: Between March 1993 and March 2003, 53 DDLTs were performed at CGMH-KMC. Patients were divided into 2 stages: stage 1 (n = 22) from March 1993 to February 1998, and stage 2 (n = 31) from March 1998 to March 2003. Indications for transplantation, patient demographics, surgical procedures, and long-term outcomes were reviewed. RESULTS: Indications for transplantation were biliary atresia (16), post-hepatitis B/C viral cirrhosis with or without hepatocellular carcinoma (21), Wilson's disease (8), primary biliary cirrhosis (3), and miscellaneous (5). Two retransplants were carried out for secondary biliary cirrhosis using primary live-donor liver transplantation (LDLT). Ten patients received grafts from 6 split-liver transplantations. Over-all Kaplan-Meier 1-, 3-, and 5-year survival rates were 88.46%, 83.86%, and 79.87%, respectively. A significant improvement in patient survival was observed in stage 2. The Kaplan-Meier 1- and 5-year patient survival rates in stage 2 were 96.67% and 92.95%, respectively. Fifteen patients developed vascular complications. Nine patients died in this series for an overall mortality rate of 17%. CONCLUSIONS: Deceased-donor liver transplantation is well established as the treatment of choice for acute and chronic liver failure in Taiwan. Satisfactory outcomes have been attained in those transplanted to date.

Use of splenic artery embolization as an adjunct to nonsurgical management of blunt splenic injury.

BACKGROUND: Splenic artery embolization (SAE) has been used as an adjunct to the nonsurgical treatment of blunt splenic injuries since 1981. It is imperative to define the role of SAE in the management of splenic trauma and to establish a guideline for its use. METHODS: In this study, 39 consecutive patients with blunt splenic ruptures were evaluated. All the patients were treated according to the authors' protocol, which included SAE as an adjunct. Angiographic study was performed for patients with any of the following presentations: recurrent hypotension despite fluid resuscitation, significant hemoperitoneum or extravasation of contrast media on computed tomography, grade 4 or 5 splenic injury, or progressive need for blood transfusion. Laparotomy was reserved for patients with unstable hemodynamics or failure of SAE. RESULTS: Four patients were excluded from the study, and 6 of the 35 remaining patients (male-to-female ratio, 22:13) received SAE. One of the six SAE patients underwent operation because of persistent hemorrhage after SAE. Nonoperative treatment was successful for 31 patients. Splenic artery embolization increased the success rate for nonsurgical management from 74% (26 of 35 patients) to 89% (31 of 35 patients). CONCLUSIONS: Judicious use of SAE for patients with blunt splenic injury avoids unnecessary surgery and expands the number of patients who can retain their spleen.

Perioperative normovolemic anemia is safe in pediatric living-donor liver transplantation.

BACKGROUND: Perioperative normovolemic anemia was applied in pediatric living-donor liver transplant (LDLT) recipients with the aim of reducing the use of blood products and decreasing transfusion-related risk. METHODS: The anemic state was allowed to occur by replacing intraoperative blood and transudate loss with colloid solutions and a discriminate use of packed red blood cells. When blood transfusion was required, the amount of blood replacement was calculated to target a hemoglobin level not higher than 8 to 9 g/dL. RESULTS: Forty-eight pediatric patients underwent LDLT. Their mean hemoglobin and hematocrit levels were maintained below 9 g/dL and 27%, respectively, at the end of the operation, at the time of extubation, postoperative days 3, 10, and 20, and at the time of discharge. The mean ventilatory support time was 15.7 hr, and no patient required reintubation. Graft function normalized within the first week posttransplant in all patients, and there was no documented case of acute hepatic artery thrombosis. All the patients were discharged with acceptable liver function, and 98% of them remain alive to date. CONCLUSION: Routine application of perioperative normovolemic anemia in pediatric LDLT has allowed the sparing use of blood products. Approximately half of our patients (42%) did not require intraoperative blood transfusion; 31% of the patients went home without receiving any blood products except 5% albumin. There were no adverse effects with this maneuver, and graft function was good in all patients.

Testicular dislocation: an uncommon and easily overlooked complication of blunt abdominal trauma.

STUDY OBJECTIVE: We report testicular dislocation as an unusual complication of blunt abdominal trauma. METHODS: The computer data bank of Chang Gung Memorial Hospital was searched for the period from 1987 to 2002, and 1,967 male patients with blunt abdominal trauma were admitted to the emergency department. Among these patients, records of 9 patients associated with testicular dislocation were collected. A retrospective review of the clinical records, abdominal computed tomography (CT) results, and subsequent scrotal sonograms was jointly performed by 2 radiologists, an emergency physician, and a trauma surgeon. RESULTS: Of these 9 patients (age range 6 to 53 years; mean 23 years), 7 patients were in motorcycle crashes, 1 patient had explosive injury, and 1 patient had seat belt injury. Associated testicular dislocation was initially missed in all patients. CT for evaluating blunt abdominal trauma revealed liver lacerations in 2 patients and pancreatic fracture, pancreatitis, bowel perforation, pubic bone fracture, and contralateral inguinal hernia in 1 each. Typical CT findings of testicular dislocation (empty scrotum and displaced testis) were retrospectively seen in 7 patients, but prompt CT diagnosis of testicular dislocation was achieved only in 3 patients, who were subsequently treated with closed manual reduction, obviating surgery. In the remaining 2 patients, CT examination did not include the scrotum and testicular dislocation, which was diagnosed by subsequent sonography. Delayed diagnosis occurred in 6 patients (duration 3 to 60 days; mean 19 days). Five of the patients underwent orchiopexy, and 1 underwent orchiectomy. CONCLUSION: In blunt abdominal trauma patients, associated testicular dislocation is easily overlooked. A complete physical examination in the trauma patient, including palpation of both testes, is strongly recommended.

The effect of liver graft-body weight ratio on the core temperature of pediatric patients during liver transplantation.

The left lateral segment of the liver from an adult living donor sometimes is relatively too large for a small pediatric recipient. It currently is unknown whether a high graft-recipient body weight ratio (GRWR) has a significant effect on core temperature during the anhepatic and reperfusion phases of living donor liver transplantation (LDLT). Seventy-two pediatric patients undergoing LDLT were divided into two groups according to body weight. Group I (GI) consisted of patients with a body weight greater than 10 kg, and group II (GII), less than 10 kg. Core temperature, measured as nasopharyngeal temperature (NT), was compared between groups at induction of anesthesia, hourly during the following 6 hours, as the lowest core temperature at the anhepatic phase, 5 and 30 minutes after reperfusion, and the last 2 hours before the end of the operation. Mild hypothermia of 35.8 degrees C +/- 0.7 degrees C and 35.9 degrees C +/- 0.4 degrees C for GI and GII was noted after induction of anesthesia, respectively; this increased +/- 1 degrees C in the following 6 hours. In the anhepatic and reperfusion phases, a sudden and significant decrease in NT was observed in both groups. This decrease in NT was significantly greater in GII than GI. In conclusion, a sudden decrease in core temperature was observed during the anhepatic and reperfusion phases of LDLT in pediatric patients, likely caused by placement of the cold liver graft, which is flushed with 4 degrees C lactated Ringer's solution during vessel reconstruction, in the anhepatic phase and return of venous blood through the cold preserved liver in the reperfusion phase. Core temperatures of pediatric patients with a body weight less than 10 kg in GII, who received grafts with a high GRWR, were more affected than those in GI.

Ionized calcium changes during living-donor liver transplantation in patients with and without administration of blood-bank products.

Exogenous citrate load from blood transfusion during orthotopic liver transplantation is thought to be the main cause of ionized hypocalcemia, which may result in hemodynamic instability. This implies that if no blood is transfused, chelation of free ionized calcium (Ca(++)) by citrate is avoided and supplemental calcium need not be given. For this study, we divided 39 pediatric living-donor liver transplant patients into two groups according to the blood component replacement given: group I received packed red blood cells and fresh frozen plasma with and without 5% albumin, and group II received 5% albumin alone. The intra-operative serial ionized calcium level was recorded, and the amount of calcium chloride replacement to maintain acceptable blood Ca(++) levels was compared between the groups. The mean serum ionized calcium level changes of both groups could be maintained within lower-to-normal limits intra-operatively. The amount of supplemental calcium chloride required to correct the hypo-ionized calcium was not significantly different between the groups. We can conclude that if an exogenous citrate load is eliminated by the avoidance of blood transfusion and 5% albumin infusion is used, instead, to replace the blood and ascites loss during OLT, the risk of ionic hypocalcemia still persists. Serum Ca(++) monitoring and adequate replacement are, therefore, still required in this setting.