Recurrence factors in patients with cutaneous melanoma and positive sentinel lymph node treated in a single reference unit in Buenos Aires.

INTRODUCTION: Although therapeutic advances have improved results of cutaneous melanoma (CM), sentinel node-positive patients still have substantial risk to develop recurrent disease. We aim to investigate prognostic indicators associated with disease recurrence in positive-sentinel lymph node biopsy (SLNB) patients in a Latin-American population. METHODS: Retrospective analysis of CM patients and positive-SLNB (2010-2020). Patients were divided into two groups: Group A (completion lymph node dissection, CLND), Group B (active surveillance, AS). Association of demographics, tumor data and SLN features with recurrence-free (RFS), distant metastases-free (DMFS) and melanoma specific (MSS) survival was analyzed. RESULTS: Of 205 patients, 45 had a positive SLNB; 27(60%) belonged to Group A and 18(40%) to Group B. With a median follow-up of 36 months, 16 patients (12 in Group A and 4 in Group B) developed recurrent disease and estimated 5-yr RFS at any site was 60% (CI95%, 0.39 - 0.77) (44.5% in CLND group vs. 22% in AS group; P = 0.20). Estimated 5-yr DMFS and MSS: 65% (CI 95%, 0.44 - 0.81) and 73% (CI 95%, 0.59 - 0.89) with no differences between groups (p = 0.41 and 0.37, respectively). Independent predictors of poorer MSS were extranodal extension (ENE) and MaxSize > 2 mm of melanoma deposit in SLN. Factors independently associated with DMFS: Breslow depth > 2 mm, ENE, number (≥ 2) of positive SN and CLND status. CONCLUSION: Primary tumor and SN features in melanoma provide important prognostic information that help optimize prognosis and clinical management. AS is now the preferred approach for most positive-SLNB CM patients.

Introducción: Si bien los avances terapéuticos han permitido mejorar los resultados del melanoma cutáneo (MC), los pacientes con ganglio centinela positivo (BGCP) aún tienen riesgo elevado de desarrollar recurrencia de la enfermedad. Nuestro objetivo fue investigar indicadores pronósticos asociados a dicho evento en una población latinoamericana. Métodos: Análisis retrospectivo de pacientes con MC y BGCP entre 2010-2020. Los pacientes se dividieron en 2 grupos: Grupo A (linfadenectomía terapéutica) y Grupo B (Vigilancia activa, VA). Se analizaron datos demográficos, tumorales y características del GC junto con sobrevidalibre de recurrencia (SLR), libre de metástasis a distancia (SLMD) y específica de melanoma (SEM). Resultados: De 205 pacientes, 45 presentaron BGCP; 27 (60%) perteneció al Grupo A y 18 (40%) al Grupo B. Con una mediana de seguimiento de 36 meses, 16 pacientes (12 en Grupo A y 4 en Grupo B) desarrollaron enfermedad recurrente con una SLR a 5 años de 60% (IC95%: 0.39-0.77) (44.5% en Grupo B vs. 22% en Grupo A; P = 0.20). Las SLMD y SEM estimadas a 5 años fueron de 65% (CI 95%, 0.44 ­ 0.81) y 73% (CI 95%, 0.59 ­ 0.89) sin diferencias entre ambos grupos (p = 0.41 y 0.37, respectivamente). Los predictores independientes de peor SEM fueron: extensión extranodal (ENE) y MaxSize > 2mm de depósito tumoral en GC. Los factores asociados de forma independiente con SLMD fueron Breslow > 2mm, ENE, número (≥ 2) de GC positivos y el status (positividad) de la linfadenectomía. Conclusión: Características del tumor primario y del GC brindan información importante que ayuda a optimizar el pronóstico y manejo clínico de los pacientes con MC. La VA es actualmente el abordaje de elección para la mayoría de los pacientes con BGCP.

Diagnostic accuracy and safety of percutaneous core needle biopsy of retroperitoneal tumours.

BACKGROUND: Histologic subtype of cancer guides treatment sequencing and the extent of surgery for retroperitoneal tumours (RPTs) but concerns persist regarding percutaneous core needle biopsy (CNB). OBJECTIVE: Endpoints were the incidence of early complications, needle tract seeding (NTS) after CNB, diagnostic accuracy. METHODS: Between 2015 and 2022, data from patients with RPT who underwent a CNB and who operated on at Institut Curie were collected. We retrospectively reviewed the medical records and microscopic analysis of both CNB and surgical specimens to evaluate the diagnostic accuracy of CNB (quantified using positive and negative predictive values, PPV/NPV). RESULTS: 313 patients underwent CNB. In 10/326 (3 %) procedures, minor complications were observed. One of 212 (0.47 %) resected RPSs exhibited a local recurrence compatible with NTS. Microscopic analysis of CNB specimens allowed the classification of tumours between groups of cancers and benign/intermediate mesenchymal tumours in 307/313 (98 %) patients. Among the 204 patients with retroperitoneal sarcoma, the overall concordance between CNB and final pathology following resection was 178/204 (87.2 %). The respective PPVs of solitary fibrous tumour, dedifferentiated liposarcoma, leiomyosarcoma and well-differentiated liposarcoma were 100 %, 98 %, 97 % and 68 %, respectively. The diagnosis of a high-grade (G 2-3) sarcoma resulted in a high specificity (97 %) and PPV (98 %) but low sensitivity (76 %). CONCLUSIONS: CNB allowed the classification of RPT in the vast majority of patients with a low morbidity rate. Concordance with final diagnosis was high for sarcomas with the exception of well-differentiated liposarcoma. As a result, CNB results should be integrated with imaging/radiomics by multidisciplinary tumour boards.

Current management of patients with cutaneous melanoma with a positive sentinel lymph node / Tratamiento actual de pacientes con melanoma cutáneo y ganglio centinela positivo

Abstract Introduction : Immediate completion lymph node dissection (CLND) performed in patients with a positive sentinel lymph node biopsy (SLNB) cutaneous melanoma is not associated with improved melanoma specific survival versus active surveillance (AS) using nodal ul trasound. Clinical practice experience and outcomes of AS and adjuvant therapy is now starting to be published in literature. Methods : Retrospective analysis of patients with a positive-SLNB between June/2017-February/2022. Impact of management on any-site recurrence free survival (RFS), isolated nodal recurrence (INR), distant metasta sis-free survival (DMFS) and melanoma-specific survival (MSS) was evaluated. Results : From 126 SLNB, 31 (24.6%) were positive: 24 received AS and 7 CLND. Twenty-one (68%) received ad juvant therapy (AS, 67% and CLND, 71%). With a median follow-up of 18 months, 10 patients developed recur rent disease with an estimated 2-yr RFS of 73% (CI95%, 0.55-0.86) (30% in AS group vs. 43% in dissection group; P = 0.65). Four died of melanoma with an estimated 2-yr MSS of 82% (CI 95%, 0.63-0.92) and no differences between AS and CLND groups (P = 0.21). Estimated 2-yr DMFS of the whole cohort was 76% (CI 95%, 0.57-0.88) with no differences between groups (P = 0.33). Conclusion : Active surveillance strategy has been adopted for most positive-SLNB cutaneous melanoma patients. Adjuvant therapy without immediate CLND was delivered in nearly 70% of patients. Our results align with outcomes of randomized control trials and previous real-world data.

Resumen Introducción : La linfadenectomía inmediata (LI) re alizada en pacientes con biopsia de ganglio centinela (BGC) positivo por melanoma cutáneo no está asociada a mejoría en la supervivencia libre de enfermedad vs. vigilancia activa (VA). Resultados oncológicos y experi encia en la práctica clínica con dicha conducta asociados a tratamiento adyuvante comienzan a ser publicados en la literatura. Métodos : Análisis retrospectivo incluyendo paci entes con BGC-positiva por melanoma cutáneo entre junio/2017-febrero/2022. Se evaluó impacto del manejo en: supervivencia libre de recurrencia (SLR), recurren cia ganglionar aislada (RGA), supervivencia libre de metástasis a distancia (SLMD) y supervivencia libre de enfermedad (SLE). Resultados : De 126 pacientes, 31 (24.6%) fueron positi vos: en 24 se realizó VA y en 7 LI. Veintiún pacientes (68%) recibieron tratamiento adyuvante (VA, 67% y LI, 71%). Con una media de seguimiento de 18 meses, 10 pacientes presentaron recurrencia de la enfermedad con una SLR estimada a 2 años del 73% (CI95%, 0.55-0.86) (30% en VA vs. 43% en LI; P = 0.65). Cuatro murieron de melanoma con una SLE a 2 años del 82% (CI 95%, 0.63-0.92); sin diferencia entre ambos grupos (P = 0.21). La SLMD a 2 años de toda la cohorte fue de 76% (CI 95%, 0.57-0.88; P = 0.33). Conclusión : La vigilancia activa se ha adoptado como conducta para la mayoría de los pacientes con BGC-positivo. El tratamiento adyuvante sin linfadenectomía inmediata se realizó en cerca del 70% de nuestra serie. Los resultados de nuestra serie son similares a los re portados en la literatura.

Current management of patients with cutaneous melanoma with a positive sentinel lymph node.

INTRODUCTION: Immediate completion lymph node dissection (CLND) performed in patients with a positive sentinel lymph node biopsy (SLNB) cutaneous melanoma is not associated with improved melanoma specific survival versus active surveillance (AS) using nodal ultrasound. Clinical practice experience and outcomes of AS and adjuvant therapy is now starting to be published in literature. METHODS: Retrospective analysis of patients with a positive-SLNB between June/2017-February/2022. Impact of management on any-site recurrence free survival (RFS), isolated nodal recurrence (INR), distant metastasis-free survival (DMFS) and melanoma-specific survival (MSS) was evaluated. RESULTS: From 126 SLNB, 31 (24.6%) were positive: 24 received AS and 7 CLND. Twenty-one (68%) received adjuvant therapy (AS, 67% and CLND, 71%). With a median follow-up of 18 months, 10 patients developed recurrent disease with an estimated 2-yr RFS of 73% (CI95%, 0.55-0.86) (30% in AS group vs. 43% in dissection group; P = 0.65). Four died of melanoma with an estimated 2-yr MSS of 82% (CI 95%, 0.63-0.92) and no differences between AS and CLND groups (P = 0.21). Estimated 2-yr DMFS of the whole cohort was 76% (CI 95%, 0.57-0.88) with no differences between groups (P = 0.33). CONCLUSION: Active surveillance strategy has been adopted for most positive-SLNB cutaneous melanoma patients. Adjuvant therapy without immediate CLND was delivered in nearly 70% of patients. Our results align with outcomes of randomized control trials and previous real-world data.

Introducción: La linfadenectomía inmediata (LI) realizada en pacientes con biopsia de ganglio centinela (BGC) positivo por melanoma cutáneo no está asociada a mejoría en la supervivencia libre de enfermedad vs. vigilancia activa (VA). Resultados oncológicos y experiencia en la práctica clínica con dicha conducta asociados a tratamiento adyuvante comienzan a ser publicados en la literatura. Métodos: Análisis retrospectivo incluyendo pacientes con BGC-positiva por melanoma cutáneo entre junio/2017-febrero/2022. Se evaluó impacto del manejo en: supervivencia libre de recurrencia (SLR), recurrencia ganglionar aislada (RGA), supervivencia libre de metástasis a distancia (SLMD) y supervivencia libre de enfermedad (SLE). Resultados: De 126 pacientes, 31 (24.6%) fueron positivos: en 24 se realizó VA y en 7 LI. Veintiún pacientes (68%) recibieron tratamiento adyuvante (VA, 67% y LI, 71%). Con una media de seguimiento de 18 meses, 10 pacientes presentaron recurrencia de la enfermedad con una SLR estimada a 2 años del 73% (CI95%, 0.55-0.86) (30% en VA vs. 43% en LI; P = 0.65). Cuatro murieron de melanoma con una SLE a 2 años del 82% (CI 95%, 0.63-0.92); sin diferencia entre ambos grupos (P = 0.21). La SLMD a 2 años de toda la cohorte fue de 76% (CI 95%, 0.57-0.88; P = 0.33). Conclusión: La vigilancia activa se ha adoptado como conducta para la mayoría de los pacientes con BGCpositivo. El tratamiento adyuvante sin linfadenectomía inmediata se realizó en cerca del 70% de nuestra serie. Los resultados de nuestra serie son similares a los reportados en la literatura.

Laparoscopic adrenalectomy for adrenal metastases of solid tumors.

INTRODUCTION: In patients with history of cancer adrenal metastases can be found in up to 70% of adrenal tumors detected during follow-up. Currently, laparoscopic adrenalectomy (LA) is considered the gold standard approach for benign adrenal tumors but is still controversial in malignant disease. Depending on the patient's oncological status, adrenalectomy might be a possible treatment option. Our objective was to analyze the results of LA for adrenal metastasis from solid tumors in two referral centers. METHODS: Retrospective analysis of 17 patients with non-primary adrenal malignancy treated with LA between 2007 and 2019 was performed. Demographic and primary tumor data, type of metastasis, morbidity, disease recurrence and evolution were evaluated. Patients were compared according to type of metastases: synchronous (< 6 months) vs metachronous (≥ 6 months). RESULTS: 17 patients were included. Median metastatic adrenal tumor size was 4 cm (IQR, 3-5.4). We had one conversion to open surgery. Recurrence was found in 6 patients with one recurring in the adrenal bed. The median OS was 24 (IQR, 10.5-60.5) months and 5-year OS was 61.4% (95%CI: 36.7%-81.4%). Patients with metachronous metastases had better overall survival vs. patients with synchronous metastases (87% vs. 14%, p = 0.0037). CONCLUSION: LA for adrenal metastases is a procedure associated with low morbidity and acceptable oncologic outcomes. Based on our results, seems reasonable to offer this procedure to carefully selected patients, mainly those with metachronous presentation. Indication of LA must be done on a case by case evaluation in the context of a multidisciplinary tumor board.

Bilateral adrenalectomy in the context of primary adrenal insufficiency due to colorectal cancer metastasis.

Introduction: Adrenal glands are a common site of metastasis for several types of malignancies. Nevertheless, bilateral metastasis leading to adrenal insufficiency is a very rare presentation. Presentation of case: We present a 62-year-old woman with previous history of colorectal cancer and bilateral adrenal metastasis associated with primary adrenal insufficiency. The patient underwent bilateral open adrenalectomy after a multidisciplinary tumour board evaluation. Conclusion: The incidence of adrenal insufficiency may be underestimated in patients with a history of cancer. Adrenal function must be evaluated in those patients presenting with bilateral adrenal masses and hormonal replacement therapy should be considered, if appropriate. In selected cases, bilateral adrenalectomy can give a possible therapeutic option for patients with confined disease to the adrenal glands.

Outcomes after laparoscopic adrenalectomy for unilateral primary aldosteronism.

Unilateral primary aldosteronism (PA) is the most common surgically correctable cause of hypertension. Determination of success after laparoscopic adrenalectomy (LA) is limited by the lack of standardized criteria. We sought to evaluate the surgical recurrence and functional outcomes of LA in patients with Conn's syndrome applying the primary aldosteronism surgical outcome (PASO) Criteria. Descriptive observational analysis of patients treated with LA due to confirmed u nilateral Conn's syndrome between May 2007 and August 2020: Twenty patients were included in the cohort; 16 patients had TLA and other four PLA [58% male, median age 47 (IQR: 44-59.5) years and median follow-up of 64 (IQR: 2-156) ] months. Median tumor size was 1.2 (0.8-1.8) cm. No conversions to open surgery were recorded and the overall morbidity of the series was 1/20. No surgical or biochemical recurrence was observed. Five patients were excluded from the analysis of functional results due to lack of follow-up. According to the PASO criteria, complete, partial, and no success were observed in 8/15, 6/15, and 1/15, respectively. The surgical treatment of the disease is supported by the literature, and we were able to reproduce the results of other series. The use of standardized and reproducible criteria to assess its functional results would be essential for a more complete and integrated evaluation of adrenal surgery.

El hiperaldosteronismo primario es la causa más frecuente de hipertensión secundaria pasible de tratamiento quirúrgico. La determinación del éxito de la adrenalectomía laparoscópica (AL), actualmente, está limitada por la falta de criterios estandarizados. Buscamos evaluar la tasa de recurrencia quirúrgica y los resultados funcionales de la AL en pacientes con Síndrome de Conn aplicando los criterios PASO (primary aldosteronism surgical outcome). Análisis descriptivo y observacional de pacientes tratados con AL en contexto de síndrome de Conn unilateral confirmado, entre Mayo-2007 y Agosto-2020. Se incluyeron 20 pacientes en el estudio; 16 pacientes tratados mediante AL total y 4 con AL parcial (55% hombres, edad mediana de 47 (IQR: 44-59.5) años y mediana de seguimiento 64 (IQR: 2-156) meses. La mediana de tamaño tumoral fue de 1.2 (0.8-1.8) cm. No se registraron conversiones a cirugía abierta y la morbilidad global de la serie: 1/20. No se observó recurrencia quirúrgica o bioquímica. Se excluyeron 5 pacientes en el análisis de resultados funcionales por falta de seguimiento. Según los criterios PASO, se observó un éxito completo, parcial y ausente en 8/15, 6/15 y 1/15, respectivamente. El tratamiento quirúrgico de la enfermedad es avalado por la literatura y pudimos reproducir los resultados de otras series. El uso estandarizado y reproducible de criterios para valorar sus resultados funcionales sería fundamental para una evaluación más completa e integrada de la cirugía suprarrenal.

Outcomes after laparoscopic adrenalectomy for unilateral primary aldosteronism / Resultados luego de adrenalectomía laparoscópica en hiperaldosteronismo primario unilateral

Abstract Unilateral primary aldosteronism (PA) is the most common surgically correctable cause of hypertension. Determination of success after laparoscopic adrenalectomy (LA) is limited by the lack of standardized criteria. We sought to evaluate the surgical recurrence and functional outcomes of LA in patients with Conn's syndrome applying the primary aldosteronism surgical outcome (PASO) Criteria. Descriptive obser vational analysis of patients treated with LA due to confirmed u nilateral Conn's syndrome between May 2007 and August 2020: Twenty patients were included in the cohort; 16 patients had TLA and other four PLA [58% male, median age 47 (IQR: 44-59.5) years and median follow-up of 64 (IQR: 2-156) ] months. Median tumor size was 1.2 (0.8-1.8) cm. No conversions to open surgery were recorded and the overall morbidity of the series was 1/20. No surgical or biochemical recurrence was observed. Five patients were excluded from the analysis of functional results due to lack of follow-up. According to the PASO criteria, complete, partial, and no success were observed in 8/15, 6/15, and 1/15, respectively. The surgical treatment of the disease is supported by the literature, and we were able to reproduce the results of other series. The use of standardized and reproducible criteria to assess its functional results would be essential for a more complete and integrated evaluation of adrenal surgery.

Resumen El hiperaldosteronismo primario es la causa más frecuente de hipertensión secundaria pasible de tratamiento quirúrgico. La determinación del éxito de la adrenalectomía laparoscópica (AL), actualmente, está limitada por la falta de criterios estandarizados. Buscamos evaluar la tasa de recurrencia quirúrgica y los resultados funcionales de la AL en pacientes con Síndrome de Conn aplicando los criterios PASO (primary aldosteronism surgical outcome). Análisis descriptivo y observacional de pacientes tratados con AL en contexto de síndrome de Conn unilateral confirmado, entre Mayo-2007 y Agosto-2020. Se incluyeron 20 pacientes en el estudio; 16 pacientes tratados mediante AL total y 4 con AL parcial (55% hombres, edad mediana de 47 (IQR: 44-59.5) años y mediana de seguimiento 64 (IQR: 2-156) meses. La mediana de tamaño tumoral fue de 1.2 (0.8-1.8) cm. No se registraron conversiones a cirugía abierta y la morbilidad global de la serie: 1/20. No se observó recurrencia quirúrgica o bioquímica. Se excluyeron 5 pacientes en el análisis de resultados funcionales por falta de seguimiento. Según los criterios PASO, se observó un éxito completo, parcial y ausente en 8/15, 6/15 y 1/15, respectivamente. El tratamiento quirúrgico de la enfermedad es avalado por la literatura y pudimos reproducir los resultados de otras series. El uso estandarizado y reproducible de criterios para valorar sus resul tados funcionales sería fundamental para una evaluación más completa e integrada de la cirugía suprarrenal.

Intradiaphragmatic bronchogenic cyst: report of a rare new case.

Bronchogenic cysts (BCs) are congenital abnormalities commonly found within the mediastinum. Diaphragmatic location is extremely rare. We present a woman in her 60s with an asymptomatic intradiaphragmatic BC. The patient underwent complete surgical resection with primary closure of the left hemidiaphragm. BCs should remain a differential diagnosis of any soft-tissue mass in the region of the diaphragm. Complete surgical resection is recommended even in asymptomatic patients to avoid complications such as infection, rupture, bleeding or malignant transformation.

En-bloc resection of soft-tissue sarcoma of anterior chest wall and reconstruction with titanium bars and free anterolateral thigh flap.

Primary soft-tissue sarcomas (STSs) of the chest wall are uncommon. Complete surgical resection remains the mainstay of treatment being sternal resection ocassionally required. We present a 25-year-old man with an anterior chest wall STS. The patient underwent complete oncological resection with reconstruction using titanium bars combined with a free vascularised anterolateral thigh flap. STSs of the chest wall are very rare and they comprise a surgical challenge for both resection and reconstruction.

Role of sentinel lymph node biopsy for cutaneous melanoma in elderly patients: preliminary results in a Latin-American population.

INTRODUCTION: In melanoma, lymph node status constitutes the most important prognostic factor among patients with locoregional disease. It has been postulated that elderly patients present less metastatic involvement in sentinel lymph node (SLN). Our objective was to analyse the results and evolution of patients ≥ 70 years-old with cutaneous melanoma in whom sentinel lymph node biopsy (SLNB) was carried out. METHODS: Retrospective analysis of 194 patients with primary CM who had a SLNB between 2005 and 2020 was included. Demographic and tumour data, SLN status, recurrence rate, morbidity and evolution were evaluated. Patients were divided into two groups according to age: Group 1 (<70 years old) and Group 2 (≥70 years old). RESULTS: One hundred and fifty patients were included in Group 1 and 44 patients in Group 2. Median Breslow thickness was 1.7 mm in Group 1 and of 2 mm in Group 2 (p = 0.015).Forty-seven patients had positive SLNB; 38 (25%) belonged to Group 1 and 9 (20.5%) to Group 2 (p = 0.55). Recurrence was found in 34 patients: 25 belonging to Group 1 and 9 corresponding to Group 2 (p = 0.65). Morbidity was of 4% in Group 1 and 9% in Group 2 (p = 0.23). With an average follow-up of 30.6 months, 5-year overall survival was of 87% in Group 1 and of 63% in Group 2 (p = 0.04). CONCLUSION: Advanced age was not associated with differences regarding positivity of SLN and recurrence but difference in overall survival was observed. According to our results and the low morbidity rate, we consider SLNB should not be omitted in such age group, since it improves staging and gives the possibility to evaluate adjuvant treatment.

Resection of a giant retroperitoneal lipoma herniating through the inguinal canal.

Retroperitoneal lipomas are extremely rare with few cases reported so far in the literature. They can reach different sizes and present with a variety of symptoms. The differential diagnosis is mainly with well-differentiated liposarcoma (WDLPS). We present a 34-year-old woman with a retroperitoneal lipoma herniating through the inguinal canal into the proximal thigh. The patient underwent complete oncological resection using a Karakousis's abdominoinguinal incision. Retroperitoneal lipomas are a very rare condition and sometimes require resections technically challenging. MDM2 amplification is critical for its differential diagnosis with WDLPS.

Outcomes of surgical treatment for isolated adrenal metastasis from non-small cell lung cancer.

OBJECTIVE: Long-term survival of patients who undergo surgical resection of isolated adrenal metastasis instead of nonsurgical treatment has shown higher values than those described for stage IVA. The primary endpoint was to evaluate overall survival (OS) of patients with single adrenal metastasis from non-small cell lung cancer (NSCLC), who underwent surgical treatment. The secondary endpoint was to evaluate and compare the OS and disease-free survival (DFS) according to: pathological lung tumour size, histology, lymph node involvement, type of metastasis at the time of diagnosis and laterality of the metastasis according to the primary lung tumour. METHODS: From August 2007 to March 2020, 13 patients with isolated adrenal gland metastasis were identified. We performed a descriptive observational study including patients with diagnosed single adrenal gland metastasis of resectable primary lung cancer and no history of other malignant disease. Clinical data obtained included patient demographics, metastases characteristics, laterality of the metastasis, time between surgeries, length of follow-up, survival status, pathological lung tumour size, histology and lymph node involvement. The variables analysed were OS and DFS. RESULTS: Median global OS was 31.9 months (interquartile range (IQR), 19.1-51.4). The 2- and 5-year OS estimated was 54% (95% CI: 29.5%-77.4%) and 36% (95% CI: 13.4%-68.1%), respectively. In patients with NSCLC without mediastinal lymph node involvement, we obtain a median OS of 40 months (IQR, 27.4-51.4) and a 2- and 5-year OS estimated of 75% (95% CI: 43.2%-92.2%) and 50% (95% CI: 18.7%-81.2%), respectively. Recurrence was detected in five patients with a median DFS of 11.9 months (IQR, 6-34.2). CONCLUSION: The resection of the adrenal metastasis should be considered if the primary lung cancer is resectable. Presence of mediastinal lymph node involvement should be ruled out through invasive staging of the mediastinum before performing adrenal and lung surgery. Proper selection of patients who would benefit from surgery is essential to obtain better survival results.

Resection of retroperitoneal soft-tissue sarcoma involving the abdominal aorta.

Complete surgical resection of soft-tissue sarcomas (STSs) frequently requires complex multivisceral resections, which is the most important factor related to overall survival and local recurrence. Major vascular involvement is not rare in patients with primary retroperitoneal STSs. We present a 54-year-old woman with a retroperitoneal STS encasing the infrarenal abdominal aorta. The patient underwent complete oncological resection with vascular reconstruction using a bi-iliac vascular graft. Major blood vessel involvement is not a contraindication for STS surgery with a curative intent.

Laparoscopic treatment of a pericaecal internal hernia.

We present the case of a pericaecal hernia treated successfully with a laparoscopic approach and full recovery after surgery. A 53-year-old female patient with a personal history of depression, osteoporosis and irritable bowel syndrome consulted to the emergency department for abdominal pain and distension in the last 12 h, associated with one episode of vomit and diminished frequency in the passage of stools. The right abdomen was tender to palpation, and blood work revealed no leucocytosis. A computed tomography scan showed small bowel loops distended and displaced to the right parietocolic recess, lateral to the ascending colon. Exploratory laparoscopy was performed confirming the presence of small bowel loops incarcerated in the paracaecal fossa. These ones were reduced with gentle manoeuvres, and the peritoneal folds incised to prevent recurrence. The patient was started on an oral diet 2 days after surgery and discharged home on the 3rd post-operative day.

Invaginación de colon causado por lipoma / Colon invagination caused by lipoma

Los lipomas del colon ocupan el tercer lugar en frecuencia de aparición de tumores benignos. Estos tumores están formados por tejido adiposo bien diferenciado con un estroma fibroso. La gran mayoría de estos lipomas es asintomática, algunos en raras ocasiones presentan complicaciones de urgencia. El fin de esta publicación es presentar un caso de obstrucción de colon por lipoma. (AU)

Benign colonic lesions are infrequent and account for a low percentage of all colonic tumors. Among the benign tumors, lipomas are third in frequency. They are composed of mature adipose tissue with fibrous stroma. Most of them are asymptomatic but in rare instances, they may present as surgical emergencies. We present one case of colonic obstruction caused by lipomas. (AU)

Guía de práctica clínico-quirúrgica para hemorragia digestiva baja / Clinical practice guide in lower gastrointestinal bleeding

El objetivo de esta guía clínico-quirúrgica es homogeneizar conceptos y conductas para el manejo de la hemorragia digestiva baja (HDB), con el fin de protocolizar y unificar el tratamiento multidisciplinario de dicha patología. Durante el manejo inicial del paciente con HDB, resulta prioritario determinar la estabilidad hemodinámica. Cuando el paciente se presenta hemodinámicamente estable, la videocolonoscopia (VCC) es el método diagnóstico de elección, la cual debe realizarse con preparación colónica y dentro de las 48 horas, mientras que si se trata de un paciente inestable que no responde a la reanimación debe realizarse, de ser posible, angiotomografía para localizar el sitio de sangrado y posteriormente angiografía. Si las condiciones no lo permiten, se procede directamente a la cirugía de urgencia. Si se logra reanimar al paciente, el método diagnóstico de elección es la videoendoscopia digestiva alta (VEDA). Si la VEDA es negativa y el paciente permanece estable, se prosigue con VCC. Por el contrario, si continúa sangrando, el paso siguiente es la angio-TC. En caso de localizar el sitio de sangrado, se realiza angiografía terapéutica. Si falla o la angio-TC es negativa, tiene indicación de cirugía. Esta guía fue consensuada a partir de la bibliografía, guías internacionales y la experiencia de los Servicios de Cirugía General, Coloproctología, Gastroenterología, Diagnóstico por Imágenes y Hemodinamia.(AU)

Left adrenal ganglioneuroma: Report of a new case.

INTRODUCTION: Adrenal ganglioneuroma (AGN) represents about 20% of the reported cases. PRESENTATION OF CASE: We present a 37-year-old man referred to our institution for a history of abdominal discomfort and a left adrenal solid mass incidentally discovered in CT abdominal scan (24 × 20 mm). Patient underwent laparoscopic surgical excision of the tumor. CONCLUSION: The histopathology examination showed areas of spindle cells and scattered mature ganglionic cells compatible with AGN.

Laparoscopic retromuscular incisional hernia repair.

A 67-year-old male with a history of a conventional right colectomy and hypertension was referred to our department for an incisional hernia and abdominal discomfort. Physical examination also showed a supraumbilical defect that was confirmed with a computed tomography scan. Laparoscopic Rives technique repair was done to repair the defect avoiding direct contact of the mesh with the intra-abdominal viscera.

Rib desmoplastic fibroblastoma: Video-assisted resection.

A 46-year-old man was referred to our department due to chronic chest pain. A computed tomography showed an exophytic image arising from 5th rib that was projected on the middle lobule. The patient underwent an exploratory videothoracoscopic because we couldn't discard lung compromise. A corneal-like lesion emerging from the inner side of the 5th rib was revealed. Complete video-assited resection was done. Histopathology examination revealed a desmoplastic fibroblastoma. To our knowledge this is the first case of desmoplastic fibroblastoma arising from a rib and the second case published in all literature of chest wall involvement.