Quiste broncogénico retrorrectal / Retrorectal Broncogenic Cyst

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Tratamiento no quirúrgico de la isquemia mesentérica crónica por lesión en la AMS a través de la AMI: una opción a considerar en el paciente frágil / Non-surgical treatment of chronic mesenteric ischemia owing to lesion in the SMA through the SMI: An option for consideration in frail patients

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Schwannoma anciano del nervio obturador: una rara causa de neuralgia / Ancient schwannoma of the obturator nerve: an uncommon cause of pelvic neuralgia

Los tumores retroperitoneales son lesiones infrecuentes. Las tumoraciones nerviosas benignas como los schwannomas representan menos del 3% de ellos, siendo extremadamente raros los que afectan el nervio obturador. Presentamos el caso de un paciente con importante afectación funcional en miembro inferior izquierdo y dolor pélvico, al que se le diagnosticó neoplasia retroperitoneal. Fue intervenido por vía laparoscópica objetivándose la dependencia de la lesión del nervio obturador. Se llevó a cabo una exéresis completa de la lesión preservando parcialmente el nervio. El paciente tuvo una evolución funcional y álgica muy favorable. La anatomía patología reveló la presencia de schwannoma, del denominado subtipo "anciano", sin datos de malignidad. Consideramos que el informe de un caso como este puede ayudar a conocer una patología muy infrecuente y a tener en consideración algunos puntos clave como la técnica de abordaje y la necesidad de preservación de las estructuras nerviosas.

Retroperitoneal tumors are uncommon; benign tumors originating in the nerve cells as schwannomas represent less than 3%, while schwannomas of the obturator nerve are extremely rare. We report the case of a male patient with significant functional compromise of the left lower limb and pelvic pain who was diagnosed with a retroperitoneal tumor. The patient underwent laparoscopic surgery during which the compromise of the obturator nerve was evident. The lesion was completely resected with partial preservation of the nerve. The patient progressed with favorable functional recovery and pain relief. The histopathological examination reported a benign ancient schwannoma. We believe that this case report can help to understand a very rare condition and consider some key points such as the technique of approach and the need for preservation of the nerve structures.

Tuberculosis hepática simulando metástasis de cáncer colorrectal / Hepatic tuberculosis mimicking metastatic colorectal cancer

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Quiste de colédoco gigante. Una causa inusual de ictericia obstructiva en el adulto / Giant choledochal cyst. An unusual cause of obstructive jaundice in an adult

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Tumor anal gigante / Giant anal tumor

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MTHFR C677T polymorphism and anatomopathological characteristics with prognostic significance in sporadic colorectal cancer.

Methylenetetrahydrofolate reductase (MTHFR) plays a key role in folate metabolism, and folate is implicated in carcinogenesis due to its role in DNA methylation, repair and synthesis. The MTHFR C677T polymorphism is associated with decreased risk of CRC and increased sensitivity to 5-FU treatment. The present study addressed the relationship between this polymorphism and histopathological and immunohistochemical characteristics of prognostic significance in 50 patients from the Canary Islands. No differences were found between the MTHFR C677T genotypes with respect to tumor budding, tumor necrosis, desmoplastic fibrosis and tumoral eosinophilia. No significant differences were found in Ki-67, bcl-2 (cytoplasmic and nuclear), CD31, CD3+ T lymphocytes (both stromal and intraepithelial) and peritumoral CD20+ B lymphocytes. In carriers of the MTHFR CC variant, tumor margins were infiltrative more frequently (68.7%) than in CT+TT carriers (33.3%, p=0.03). In addition, wild-type CC genotype showed stromal CD20+ B lymphocytes (68.8%) more often than CT+TT carriers (33.3%, p=0.03). Both parameters indicate a better tumor prognosis when the MTHFR 677T variant is present.

Estudio cooperativo del Grupo Español de Trasplante de Páncreas (GETP): complicaciones quirúrgicas / Cooperative study of the Spanish Pancreas Transplant Group (GETP): Surgical complications

El fracaso técnico en el trasplante de páncreas ha sido el principal responsable de la pérdida de los injertos. Desde hace unos años, el número de complicaciones se han reducido, y por tanto, la proporción de este problema. Objetivos El Grupo Español del Trasplante de Páncreas se plantea como objetivo de este estudio analizar la situación actual con relación a las complicaciones quirúrgicas y su gravedad. Material y métodos Se ha realizado un estudio retrospectivo y multicéntrico con 10 centros participantes, con un total de 410 pacientes trasplantados de páncreas entre enero de 2008 y diciembre de 2013. Resultados Un total de 316 trasplantes fueron simultáneos con riñón, 66 después de riñón, 10 solo de páncreas, 7 multiviscerales y 11 retrasplantes. El porcentaje de complicaciones quirúrgicas fue del 39% (161 pacientes). Un 7% de trombosis vasculares, 13% de hemorragias, 6% de pancreatitis del injerto, 12% de infecciones quirúrgicas y otras en menor proporción. Las reintervenciones alcanzaron el 25%. La gravedad de las complicaciones fueron del tipo iiib (13%), del tipo ii (12%) y del tipo iva (8,5%). La pérdida del injerto fue del 8%. La mortalidad precoz del 0,5%. Las operaciones por complicaciones tardías fueron el 17%. Conclusiones El número de complicaciones quirúrgicas tras el trasplante no es desdeñable: afectan a uno de cada 3 pacientes, son graves en uno de cada 5 y con pérdida del injerto en uno de cada 10 pacientes. Por tanto, sigue existiendo un porcentaje significativo de complicaciones quirúrgicas en este tipo de actividad, como se demuestra en nuestro país

Technical failure in pancreas transplant has been the main cause of the loss of grafts. In the last few years, the number of complications has reduced, and therefore the proportion of this problem. Objetives The Spanish Pancreas Transplant Group wanted to analyze the current situation with regard to surgical complications and their severity. Material and methods A retrospective and multicenter study was performed. 10 centers participated, with a total of 410 pancreas transplant recipients between January and December 2013. Results A total of 316 transplants were simultaneous with kidney, 66 after kidney, pancreas-only 10, 7 multivisceral and 11 retrasplants. Surgical complication rates were 39% (n = 161). A total of 7% vascular thrombosis, 13% bleeding, 6% the graft pancreatitis, 12% surgical infections and others to a lesser extent. Relaparotomy rate was 25%. The severity of complications were of type IIIB (13%), type II (12%) and type IVA (8.5%). Graft loss was 8%. Early mortality was 0.5%. The percentage of operations for late complications was 17%. Conclusions The number of surgical complications after transplantation is not negligible, affecting one in 3 patients. They are severe in one out of 5 and, in one of every 10 patients graft loss occurs. Therefore, there is still a significant percentage of surgical complications in this type of activity, as shown in our country

Clinicopathological analysis of factors related to colorectal tumor perforation: influence of angiogenesis.

Colorectal tumor perforation is a life-threatening complication of this disease. However, little is known about the anatomopathological factors or pathophysiologic mechanisms involved. Pathological and immunohistochemical analysis of factors related with tumoral neo-angiogenesis, which could influence tumor perforation are assessed in this study. A retrospective study of patients with perforated colon tumors (Group P) and T4a nonperforated (controls) was conducted between 2001 and 2010. Histological variables (differentiation, vascular invasion, and location) and immunohistochemical (CD31, Growth Endothelial Vascular Factor (VEGF) and p53) related with tumor angiogenesis were analyzed. Of 2189 patients, 100 (4.56%) met the inclusion criteria. Of these, 49 patients had nonperforated (2.23%) and 51 had perforated tumors (2.32%). The P group had lower number of right-sided tumors (7/51, 13.7%) compared with controls (13/49, 36.7%) (P = .01). The high-grade tumors (undifferentiated) represented only 3.9% of the perforated tumors; the remaining 96.1% were well differentiated (P = .01). No differences between groups in the frequency of TP53 mutation or VEGF and CD31 expression were found. In the P group, only 2 (3.9%) had vascular invasion (P = .01). Of the 12 tumors with vascular invasion, only 2 were perforated (16.6%). The median number of metastatic lymph-nodes in P Group was 0 versus 3 in controls (Z = -4.2; P < .01). Pathological analysis of variables that indirectly measure the presence of tumor angiogenesis (differentiation, vascular invasion, and the number of metastatic lymph nodes) shows a relationship between this and the perforation, location, and tumor differentiation. We could not directly validate our hypothesis, by immunohistochemistry of TP53, VEGF, and CD31, that perforated tumors exhibit less angiogenesis.

Cooperative Study of the Spanish Pancreas Transplant Group (GETP): Surgical Complications.

UNLABELLED: Technical failure in pancreas transplant has been the main cause of the loss of grafts. In the last few years, the number of complications has reduced, and therefore the proportion of this problem. OBJECTIVES: The Spanish Pancreas Transplant Group wanted to analyze the current situation with regard to surgical complications and their severity. MATERIAL AND METHODS: A retrospective and multicenter study was performed. 10 centers participated, with a total of 410 pancreas transplant recipients between January and December 2013. RESULTS: A total of 316 transplants were simultaneous with kidney, 66 after kidney, pancreas-only 10, 7 multivisceral and 11 retrasplants. Surgical complication rates were 39% (n=161). A total of 7% vascular thrombosis, 13% bleeding, 6% the graft pancreatitis, 12% surgical infections and others to a lesser extent. Relaparotomy rate was 25%. The severity of complications were of type IIIb (13%), type II (12%) and type IVa (8.5%). Graft loss was 8%. Early mortality was 0.5%. The percentage of operations for late complications was 17%. CONCLUSIONS: The number of surgical complications after transplantation is not negligible, affecting one in 3 patients. They are severe in one out of 5 and, in one of every 10 patients graft loss occurs. Therefore, there is still a significant percentage of surgical complications in this type of activity, as shown in our country.

Íleo biliar con perforación secundaria de divertículo sigmoideo / Gallstone ileus and intestinal perforation secondary to sigmoid diverticulum

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El íleo biliar como causa de abdomen agudo. Importancia del diagnóstico precoz para el tratamiento quirúrgico / Gallstone ileus as a cause of acute abdomen. Importance of early diagnosis for surgical treatment

El íleo biliar es una causa poco frecuente de obstrucción intestinal mecánica, causada por el paso del cálculo a través de la luz intestinal, de difícil diagnóstico preoperatorio en el Servicio de Urgencias. Presentamos un estudio retrospectivo de 5 casos de íleo biliar tratados entre 2000 y 2010. Se analizaron las características clínicas, las pruebas diagnósticas y el tratamiento quirúrgico realizado. Se incluyó a 5 pacientes, 2 empezaron con una obstrucción intestinal típica, otros 2 presentaron un íleo biliar recurrente previamente intervenido y el último presentó una peritonitis secundaria a la perforación de un divertículo ileal. En todos los casos, la TAC permitió el diagnóstico preoperatorio. En nuestra experiencia, el íleo biliar puede aparecer con clínica diferente a la obstrucción intestinal. En lo casos de sospecha, una TAC puede ser útil para disminuir el retraso diagnóstico relacionado con mayor número de complicaciones (AU)

Gallstone ileus is an uncommon type of mechanical intestinal obstruction caused by an intraluminal gallstone, and preoperative diagnosis is difficult in the Emergency department. This study is a retrospective analysis of the clinical presentation of 5 patients with gallstone ileus treated between 2000-2010. Clinical features, diagnostic testing, and surgical treatment were analyzed. Five patients were included: 2 cases showed bowel obstruction; 2 patients presented a recurrent gallstone ileus with prior surgical intervention; and one patient presented acute peritonitis due to perforation of an ileal diverticula. In all cases CT confirmed the preoperative diagnosis. In our experience, gallstone ileus may present with clinical features other than intestinal obstruction. In suspicious cases CT may be useful to decrease diagnostic delay, which is associated with more complications (AU)

[Gallstone ileus as a cause of acute abdomen. Importance of early diagnosis for surgical treatment]. / El íleo biliar como causa de abdomen agudo. Importancia del diagnóstico precoz para el tratamiento quirúrgico.

Gallstone ileus is an uncommon type of mechanical intestinal obstruction caused by an intraluminal gallstone, and preoperative diagnosis is difficult in the Emergency department. This study is a retrospective analysis of the clinical presentation of 5 patients with gallstone ileus treated between 2000-2010. Clinical features, diagnostic testing, and surgical treatment were analyzed. Five patients were included: 2 cases showed bowel obstruction; 2 patients presented a recurrent gallstone ileus with prior surgical intervention; and one patient presented acute peritonitis due to perforation of an ileal diverticula. In all cases CT confirmed the preoperative diagnosis. In our experience, gallstone ileus may present with clinical features other than intestinal obstruction. In suspicious cases CT may be useful to decrease diagnostic delay, which is associated with more complications.

Metastatic lymphs nodes and lymph node ratio as predictive factors of survival in perforated and non-perforated T4 colorectal tumors.

AIMS: Recently it has been hypothesized that perforation of colorectal cancer (CRC) itself is not a predictor of poor prognosis. The aim of this study was to analyze the prognostic impact, of the spontaneous perforation of the tumour, metastatic lymph nodes and lymph node ratio (LNR) after potentially curative surgery. METHODS: Retrospective analysis of oncologic outcomes of patients with T4a CRC grouped by perforated and non-perforated tumours. Between 2001 and 2010, 100 patients were included. Oncologic outcomes, disease-free survival and global survival were analyzed. RESULTS: Forty-nine patients had a non-perforated cancer and 51 presented a perforated neoplasm. Perforated cancers had a lower mean number of lymph nodes (1.16 vs. 4.14, P < 0.001), lower LNR (0.13 vs. 0.33, P = 0.001), better TNM-stage (P < 0.001), and lower metastases during follows-up (P = 0.02). The perforated-group had higher survival (P = 0.017) and higher metastasis-free time (P = 0.03). LNR cutoffs (<0.05, 0.05-0.4, and >0.4) had significant differences in overall survival (log-rank < 0.001). The predictive value of LNR and metastatic lymph nodes in mortality was similar. CONCLUSIONS: In our experience, perforated cancers had higher survival rates and metastasis-free interval that non-perforated cancers, probably by a lower number of metastatic lymph nodes, smaller LNR and better TNM stage. Moreover the predictive value, in mortality rate, of metastatic lymph nodes and LNR was similar.