The correlation between SUV measured on 18F-FDG PET/CT scan and residual tumor after argon-helium knife cryoablation / 介入放射学杂志

Objective To evaluate the correlation between standardized uptake value (SUV) measured on 18F-FDG PET/CT scan and residual tumor after argon-helium knife cryoablation.Methods The clinical data of 40 patients with hepatic or pulmonary malignant tumors,who were treated with argon-helium knife cryoablation during the period from March 2008 to December 2015 at authors' hospital,were collected.18FFDG PET/CT scan was performed both before and after the treatment,and the SUV values of each patient were calculated.The data were analyzed based on the pathological findings and clinical follow-up results.Results A total of 42 lesions were detected in the 40 patients.After treatment,radionuclide concentration was demonstrated in 38 lesions,and 16 lesions were proved to be the tumor residual by follow-up imaging and pathological examination.In other 22 lesions the radionuclide concentration was due to inflammatory response.The SUV value of the tumor residual was strikingly higher than that of the inflammatory response (6.13±1.21 vs.2.64±0.96,P＜0.05).The group with low SUV value had a lower recurrence rate (P=0.020) and a higher survival rate (P=0.039).The tumor survival rate of the low SUV value group was significantly lower than that of the group with high SUV value (x2=14.994,P=0.000 2).Conclusion 18F-FDG PET/CT imaging has unique value in promptly detecting marginal residual lesion after argon-helium knife cryoablation,which provides useful information for the evaluation of cryoablation effect as well as for the making of further therapeutic plan.

Resección laparoscópica de linfangioma cavernoso retroperitoneal residual / Laparoscopic resection of a residual retroperitoneal cavernous lymphangioma

Objetivo: Presentar el caso de una paciente con linfangioma cavernoso diagnosticado incidentalmente y tratado quirúrgicamente, primero por laparotomía y después, para su resolución final, mediante laparoscopia. Se discuten las ventajas de la cirugía miniinvasiva como método adyuvante en la resección del linfangioma residual después de una laparotomía extensa. Sede: Hospital de tercer nivel. Diseño: Presentación del caso y revisión de la literatura. Descripción del caso: Mujer de 43 años, en la cual se documentó masa quística aparentemente dependiente del ovario derecho, con marcadores tumorales para cáncer ovárico normales. Se programó para salpingoclasia y resección de quiste ovárico, por incisión Pfannenstiel, encontrando un quiste gigante de origen retroperitoneal, que se extendía desde el hueco pélvico hasta el abdomen superior. Fue extirpado casi en su totalidad, debido a la extensión de la tumoración, excepto en la porción pancreatoduodenal y retrohepática, ya que al intentar abordar esta zona, inició con sangrado transoperatorio y se desconocían las relaciones del tumor con estos órganos. Se difirió la resección de esta porción residual para complementar su estudio por imágenes e histopatología y llevarlo a cabo en un segundo tiempo quirúrgico. La tomografía postoperatoria no mostró dependencia pancreatoduodenal, biliar o vascular. Al mes, se programó para la resección laparoscópica del tumor residual. El reporte histopatológico fue linfangioma cavernoso en ambos casos. Conclusiones: El tratamiento para los linfangiomas retroperitoneales es la resección completa. La cirugía miniinvasiva es una alternativa útil, ventajosa y mejor aceptada por los pacientes en algunas reoperaciones planeadas, donde inicialmente se realizó cirugía abierta.

Objective: To present the case of a woman with cavernous lymphangioma incidentally diagnosed and surgically treated, first through laparotomy and later, for its final resolution, through laparoscopy. We discuss the advantages of mini-invasive surgery as an adjuvant method for the resection of a residual lymphangioma after extensive laparotomy. Setting: Third level health care hospital. Design: Case presentation and review of the literature. Case description: A 43-year-old woman, in whom a cystic mass, apparently depending on the right ovary was documented; tumor markers for ovarian cancer were normal. She was programmed to undergo salpingoplasty and resection of the ovarian cyst, through Pfannenstiel incision. During surgery a giant cyst of retroperitoneal origin was found, which extended from the pelvic hole to the upper abdomen. It was resected almost totally due to the extension of the tumor, except for the pancreatoduodenal and retrohepatic region, because, when attempting to approach this area, transoperative bleeding started and we did not know the relations of the tumor with these organs. The resection of this residual portion was deferred to be able to complement the diagnosis with imaging and histopathology studies and perform the resection at a second surgical time. Postoperative tomography revealed no pancreatoduodenal, biliary, or vascular dependence. After 1 month, the patient was programmed for laparoscopic resection of the residual tumor. The histopathological report corresponded to cavernous lymphangioma in both situations. Conclusions: Treatment of retroperitoneal lymphangiomas consists of complete resection. Mini-invasive surgery is a useful, valuable option and a better accepted alternative by patients in some planned re-operations where initially open surgery had been performed.