Duodenectomía parcial distal con conservación del páncreas por un tumor del estroma gastrointestinal / Distal partial duodenoscopy with pancreas conservation for stromal gastrointestinal tumor

Los tumores del estroma gastrointestinal son los tumores mesenquimatosos más frecuentes del sistema digestivo. En el duodeno son raros, con menos de 5 por ciento. A diferencia de los carcinomas, los tumores del estroma gastrointestinal no infiltran la mucosa de manera extensa. La resección quirúrgica con bordes de sección negativos sin linfadenectomía es el principal tratamiento con intención curativa y las resecciones conservadoras se llevan a cabo siempre y cuando sean factibles desde el punto de vista técnico. Presentamos una paciente con un tumor del estroma gastrointestinal de duodeno cuya principal manifestación fue el sangrado digestivo alto. La lesión fue resecada con bordes de sección quirúrgicos negativos mediante una duodenectomía parcial distal de la tercera y cuarta porciones del duodeno con preservación del páncreas. El tránsito intestinal fue restituido mediante una duodenoyeyunostomía término-terminal en un plano de sutura. En este momento, la paciente recibe tratamiento con metisilato de imatinib(AU)

Gastrointestinal stromal tumors are the most frequent mesenchymal tumors of the digestive system. In the duodenum, their presentation is rare, with less than 5 persent. Unlike carcinomas, gastrointestinal stromal tumors do not extensively infiltrate the mucosa. Surgical resection with negative section borders without lymphadenectomy is the main treatment with curative intent, and conservative resections are carried out as long as they are feasible from the technical point of view. We present the case of a patient with a gastrointestinal stromal tumor of the duodenum and whose main manifestation was high digestive bleeding. The lesion was resected with negative surgical section borders through a distal partial duodenectomy of the third and fourth portions of the duodenum and with preservation of the pancreas. The intestinal transit was restored by a terminal duodenojejunostomy in a suture plane. At this time, the patient is treated with imatinib mesylate(AU)

Adenocarcinoma primario de duodeno: reporte de una neoplasia infrecuente / Primary duodenal adenocarcinoma: case report of an infrequent tumor

Introducción: el adenocarcinoma primario de duodeno es una neoplasia infrecuente en nuestro medio y a nivel mundial. No existen evidencias concluyentes sobre su epidemiologia, diagnóstico, tratamiento ni pronóstico. Caso clínico: presentamos el caso de una paciente de 77 años de raza mestiza, procedente de Cusco (Perú) que consulta por dolor abdominal, pérdida de peso, náuseas, vómitos postprandiales y sensación de llenura precoz de tres meses de evolución. Al momento del examen se encuentra con desnutrición calórica proteica de segundo a tercer grado con índice de masa corporal de 16,88 kg/m2, signos de anemia crónica moderada a severa y una tumoración abdominal de 8 cm en epigastrio e hipocondrio derecho. La tomografía espiral multicorte de abdomen y ecografía revelaron la presencia de un tumor sólido en la segunda porción de duodeno. Recibió una gastroenteroanastomosis sin resección del tumor y toma de biopsia, la cual confirmó un adenocarcinoma tubular. Además se verificó ausencia de tumor primario en estómago, páncreas, vías biliares y colon. Con tales diagnósticos la paciente fue estabilizada y se inició quimioterapia con 5-fluorouracilo, irinotecan y leucovorina. Revisión de literatura: presentamos una breve revisión sobre el diagnóstico, tratamiento y pronóstico para su análisis y discusión. Discusión: el manejo de esta enfermedad no es sencillo. La escasa la literatura deja mucho del manejo a criterio del médico sobre lo más adecuado para el paciente. Consideramos que todo caso de una enfermedad infrecuente debe ser estudiado a profundidad, dar origen a una revisión meticulosa de la bibliografía y, por sobre todo, debe ser reportado para su conocimiento por la comunidad médica.

Introduction. Primary duodenal adenocarcinoma is an infrequent tumor both in our environment and in the world. There is no conclusive evidence on its epidemiology, diagnostic criteria, treatment or prognosis. Clinical case. We report a 77 year-old female patient, of mixed racial origin, native of Cusco (Peru) who consulted for abdominal pain, weight loss, nausea, postprandial vomiting and bloating of three months course. At the time of examination she had second to third degree protein malnutrition with a BMI of 16.88 kg/m2, signs of moderate to severe chronic anemia and an 8 cm abdominal tumor in the epigastrium and right hypochondrium. The multislice spiral abdominal CT and ultrasonography revealed the presence of a solid tumor in the second portion of the duodenum. The patient was submitted to a gastroenterostomy without tumor resection. Biopsy confirmed tubular adenocarcinoma. Furthermore, no other primary tumors were found in the stomach, pancreas, biliary tree and colon. The patient was stabilized and was treated with 5-fluorouracil, irinotecan and leucovorin. Literature review. The article includes a brief review on the diagnosis, treatment and prognosis of this condition. Discussion. Management is not straightforward. There is little literature on the subject leaving decisions up to the attending physician’s criteria. We believe that all cases of rare diseases should be studied in depth, give rise to a thorough review of literature and, above all, be brought to the attention of the medical community.

Tumor estromal gastrointestinal en duodeno / Gastrointestinal stromal tumor (GIST) of duodenum

Paciente mujer de 64 años de edad, quien hace dos años estuvo hospitalizada en otra institución para el tratamiento de un absceso en el lóbulo hepático derecho. Durante esa hospitalización se diagnosticó un tumor duodenal por tomografía; sin embargo, no se completó el estudio sobre este hallazgo. Previa a la actual hospitalización, la paciente estuvo internada en una clínica privada, donde fue tratada con antibióticos por una imagen sugestiva de "absceso organizado" en la cabeza del páncreas. Desde hace un mes presentaba fiebre, dolor abdominal y una masa palpable en el cuadrante superior derecho del abdomen. Se le realizó una tomografía espiral multicorte trifásica, con reconstrucción curvada de páncreas que permitió reconocer una tumoración ovoidea de 80 x 60 mm, con área de necrosis central e intenso realce del contraste (fase arterial), localizada entre la segunda y tercera porción duodenal, próxima a la cabeza de páncreas. La endoscopía alta demostró una compresión extrínseca en la tercera porción duodenal. La paciente fue sometida a una resección tumoral sin complicaciones y la histología del espécimen quirúrgico reveló un Tumor Estromal Gastrointestinal (GIST) Duodenal, de crecimiento transmural extraluminal. Presentamos el caso por ser una inusual presentación este tipo de tumores.

Female of 64 years old, who two years ago was hospitalized in another institution for treatment of an abscess in the right liver lobe. During that hospitalization, it was found a duodenal tumor by tomography; however, no further studies or follow up on this finding was done. Prior to actual hospitalization, she was seen in a private clinic and treated with antibiotics for a suggestive "organized abscess" in the pancreatic head diagnosed by tomography. She presented with fever, abdominal pain and a palpable abdominal tumor in the right upper quadrant for a month. We realized a three-phase multislice spiral tomography with pancreatic curved reconstruction, which allowed to identified an ovoid tumor of 80 x 60 mm, with an area of central necrosis and intense contrast enhancement (arterial phase), located between the second and third duodenal portion, near the head of the pancreas. An upper endoscopy showed an extrinsic compression of the third duodenal portion. The patient underwent tumor resection without complication and the histologic diagnosis of the surgical specimen revealed a duodenal stromal tumor (GIST) with extraluminal transmural growth. We presented this case because of its unusual presentation of this tumor.

Diagnostic Value of Hypotonic-MRCP Combined with LAVA Dynamic Contrast-Enhanced Scan in Duodenal Tumor / 实用放射学杂志

Objective To discuss the value of hypotonic-MRCP combined with LAVA dynamic contrast-enhanced scan in diagnosis of duodenal tumor.Methods Five patients with duodenal adenocarcinomas confirmed by pathology were involved in this study.All cases underwent plain MRI and hypotonic-MRCP and LAVA dynamic contrast-enhanced scans.Results 4 of 5 cases were correctly diagnosed with MR imaging.Imaging signs included:the cavum of descending duodenum appeared as asymmetrical stenosis,masses with soft tissue signal intensity connecting the intestinal wall with wide base,the intestinal wall stiff,the intestinal mucosa destruction.The lesions would be slightly-moderately enhanced at LAVA dynamic enhancement scanning.Conclusion Hypotonic-MRCP combined with LAVA dynamic contrast-enhanced scan can display the direct and indirect sign of duodenal tumors,which was effective in identifying the circumscription of the tumor and its extension.

The feasibility of pancreatoduodenectomy with vascular reconstruction to treat pancreatic and duodenal tumor / 中国癌症杂志

Background and purpose:Radical surgery remains the main treatment for the patients with pancreatic and duodenal cancer,but resectability rate is low when clinically diagnosed,portal vein/superior mesenteric vein or inferior caval vein invaded by tumors are a few of the main reasons.How to increase resectability of pancreatic cancer and duodenal cancer still is very challenging to the clinician.This study was done to explore the feasibility of the new surgical approach for the treatment of pancreatic and duodenal cancer with portal vein/superior mesenteric vein or inferior caval vein invasion.Methods:5 patients received pancreatoduodenectomy with vascular reconstruction between February 2002 and June 2005.Three patients with pancreatic head cancer underwent pancreatoduodenectomy combined with portal vein/SMV resection and vascular reconstruction and two patients with duodenal cancer underwent pancreatoduodenectomy combined with inferior caval vein resection and vascular reconstruction.Results:There was no surgery related death.The serious complications such as artificial blood vessel infections or obstructions were not experienced.After surgery,one patient died 10 months later,one patient died 24 months later,two patients survived for over 3 years and one patient over 4 years.Conclusions:Pancreatoduodenectomy with vascular reconstruction for patients with carcinoma of the pancreatic head or duodenum invading portal vein/superior mesenteric vein or inferior caval vein has been proved to be a safe treatment,it could improve the resectability of the tumor and prolong survival.

Quercetin enhances tumorigenicity induced by N-ethyl-N'-nitro-N-nitrosoguanidine in the duodenum of mice

Quercetin, a flavonoid, widely distributed in many fruits and vegetables, is well known to have an antitumor effect despite its mutagenicity. In this study, we examined the effect of dietary quercetin on duodenum-tumorigenicity of mice induced by a chemical carcinogen, N-ethyl-N'-nitro-N-nitrosoguanidine (ENNG). Eight-week-old male C57BL/6 mice were divided into 4 groups; ENNG without quercetin (group A), ENNG with 0.2% quercetin (group B), ENNG with 2% quercetin (group C), and 2% quercetin without ENNG (group D). ENNG was given in drinking water for the first 4 weeks, and thereafter quercetin was given in a mixed diet. At week 20, the average number of duodenal tumors per mouse was significantly higher in group C (mean±SE, 7.26±1.75, p<0.05) than in group A (2.32±0.31). The size of the duodenal tumors increased significantly in group B (1.79±0.09 mm, p<0.001) compared with group A (1.43±0.09 mm). In contrast, no duodenal tumor was induced in group D. The present findings suggest that excessive intake of quercetin occasionally is a risk factor for carcinogenesis of some specific organs such as the upper intestine.

Quercetin Enhances Tumorigenicity Induced by N-Ethyl-N'-Nitro-N-Nitrosoguanidine in the Duodenum of Mice*

Quercetin, a flavonoid, widely distributed in many fruits and vegetables, is well known to have an anti-tumor effect despite its mutagenicity. In this study, we examined the effect of dietary quercetin on duodenum-tumorigenicity of mice induced by a chemical carcinogen, N-ethyl-N'-nitro-N-nitrosoguanidine (ENNG). Eight-week-old male C57BL/6 mice were divided into 4 groups; ENNG without quercetin (group A), ENNG with 0.2% quercetin (group B), ENNG with 2% quercetin (group C), and 2% quercetin without ENNG (group D). ENNG was given in drinking water for the first 4 weeks, and thereafter quercetin was given in a mixed diet. At week 20, the average number of duodenal tumors per mouse was significantly higher in group C (mean±SE, 7.26±1.75, p<0.05) than in group A (2.32±0.31). The size of the duodenal tumors increased significantly in group B (1.79±0.09 mm, p<0.001) compared with group A (1.43±0.09 mm). In contrast, no duodenal tumor was induced in group D. The present findings suggest that excessive intake of quercetin occasionally is a risk factor for carcinogenesis of some specific organs such as the upper intestine.

PRIMARY TUMORS OF THE DUODENUMA REPORT OF EIGHTEEN CASES / 中国普通外科杂志

Eighteen cases of primary tumors of the duodenum were reported. There were four cases of benign tumors, and fourteen cases of malignancy. The tumor was located in the bulb of the duodenum in seven cases, the descending part in nine cases and the transversepart in two cases. Five cases were complicated with intestinal perforation. Four cases with hemorrhage, four cases with obstruction and five cases with choledochal obstruction. The pathology, diagnosis and treatment of primary duodenum tumors are discussed.