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Retroperitoneal tumor

Miki Murakoshi, Kei Takasawa, Masato Nishioka, Masahiro Asakawa, Kenichi Kashimada, Takanobu Yoshimoto, Toshiyuki Yamamoto, Kazuhiro Takekoshi, Yoshihiro Ogawa, Masayuki Shimohira
1p36 deletion syndrome is the most common terminal deletion syndrome, and the genomic regions that contribute to specific 1p36 deletion syndrome-related phenotypes were recently identified. Deletions in the 1p36 region have been documented in various tumor tissues, which indicates correlation between loss of heterozygosity of 1p36 and tumor development, and the existence of tumor suppressors in this region. Therefore, it was suspected that patients with 1p36 deletion syndrome have a higher risk of tumor development; however, only a few child cases of neuroblastoma with 1p36 deletion syndrome have been reported...
October 24, 2016: American Journal of Medical Genetics. Part A
Hassan Peyvandi, Fahimeh Arsan, Athena Alipour-Faz, Maryam Yousefi
BACKGROUND: Mature cystic teratoma is one of the most common tumors of the ovaries; however, primary retroperitoneal lesions are rare entities in adults. CASE SUMMARY: We report a case of a 33 year-old woman noticing a mass in her epigastric and left upper abdominal region without any specific signs and symptoms. Radiological evaluation revealed a retroperitoneal mass with extension from the posterior aspect of the pancreas to the pelvic cavity, composed of calcifications and cystic elements...
October 11, 2016: International Journal of Surgery Case Reports
Giancarlo D'Andrea, Giovanni Sessa, Veronica Picotti, Antonino Raco
We report the case of a large lumbar schwannoma eroding the vertebra and originating from spinal canal with invasion of the retroperitoneal space. We also review all the cases in literature reporting lumbar schwannomas eroding the vertebral bodies and invading the retroperitoneal space focusing on the surgical strategies to manage them. Spinal CT-scan revealed a 44 mm × 55 mm inhomogeneous soft-tissue mass arising from the right L5-S1 neural foramen and its most anterior portion had a clear colliquative aspect...
2016: Case Reports in Surgery
Shotaro Sakka, Koji Kawai, Ippei Tsujimoto, Masahiro Kurobe, Daishi Ichioka, Shuya Kantori, Takahiro Kojima, Takahiro Suetomi, Akira Jouraku, Jun Miyazaki, Tomoya Hoshi, Hiroyuki Nishiyama
A 37-year-old man presented at our hospital. Pathological examination of a right orchiectomy specimen, radiographic examination, and tumor marker profile resulted in a diagnosis of retroperitoneal nonseminomatous germ cell tumor (intermediate risk according to IGCC classification). Laboratory testing revealed mild elevation of low density lipoprotein cholesterol. Induction chemotherapy with bleomycin, etoposide and cisplatin (BEP) was started, but he complained of chest pain on day 10 of the second cycle of BEP...
September 2016: Hinyokika Kiyo. Acta Urologica Japonica
Masateru Nagae, Yasuo Mikami, Kentaro Mizuno, Tomohisa Harada, Takumi Ikeda, Hitoshi Tonomura, Ryota Takatori, Hiroyoshi Fujiwara, Toshikazu Kubo
INTRODUCTION: Polymethylmethacrylate (PMMA) cement is useful for spinal reconstruction, but can cause complications including new vertebral fractures, neurological disorders and pulmonary embolism. We report a case in PMMA cement used for spinal reconstruction after tumor curettage dislodged and penetrated the gastrointestinal tract. DIAGNOSES: The patient was diagnosed with a retroperitoneal extragonadal germ cell tumor at age 27 years. After chemotherapy and tumor resection, the tumor remained...
October 2016: Medicine (Baltimore)
Jeong Il Yu, Do Hoon Lim, Hee Chul Park, Heerim Nam, Bo Kyoung Kim, Sung-Joo Kim, Jae Berm Park
We investigated the efficacy and safety of a tissue expander (TE) for adjuvant radiotherapy (RT) of resected retroperitoneal sarcoma (RPS).This study was conducted with 37 patients with RPS who received resection with or without TE insertion followed by RT from August 2006 to June 2012 at Samsung Medical Center. Among the 37 patients, TE was inserted in 19. The quality of TE insertion was evaluated according to the correlation of clinical target volume and retroperitoneal surface volume covered by TE and was defined as follows: excellent, ≥85%; good, 70% to 85%; fair, 50% to 70%; and poor, <50%...
July 2016: Medicine (Baltimore)
Hyojun Park, Sanghoon Lee, BoKyong Kim, Do Hoon Lim, Yoon-La Choi, Gyu Seong Choi, Jong Man Kim, Jae Berm Park, Choon Hyuck David Kwon, Jae-Won Joh, Sung Joo Kim
Given that retroperitoneal liposarcoma (LPS) is extremely difficult to completely resect, and has a relatively high rate of recurrence, radiotherapy (RT) is the treatment of choice after surgical resection. However, it is difficult to obtain a sufficient radiation field because of the close proximity of surrounding organs. We introduce the use of tissue expanders (TEs) after LPS resection in an attempt to secure a sufficient radiation field and to improve recurrence-free survival.This study is a retrospective review of 53 patients who underwent surgical resection of LPS at Samsung Medical Center between January 1, 2005, and December 31, 2012, and had no residual tumor detected 2 months postoperatively...
August 2016: Medicine (Baltimore)
Mohamed Alsharedi, Nadim Bou Zgheib, Yousef Khelfa, Ali Raufi, Nabiha Elmsherghi, Yehuda Lebowicz
Malignant melanoma, as the name implies, is a malignant tumor of melanocytes, found in the skin, eyes, meningeal lining and the mucosal epithelium of the aero-digestive and genitourinary tracts. Malignant melanoma is typically skin malignancy, which rarely presents at extracutaneous site. Here we present a rare case of primary retroperitoneal melanoma and review the findings in comparison with other cases described in literature.
September 5, 2016: Rare Tumors
Yusuke Matsuda, Noriko Kimura, Takanobu Yoshimoto, Yoshihiro Sekiguchi, Junzo Tomoishi, Ichiro Kasahara, Yoshihito Hara, Yoshihiro Ogawa
Pheochromocytomas and paragangliomas, which exclusively produce dopamine, are very rare. Herein, we report for the first time a Japanese case of an exclusively dopamine-producing paraganglioma accompanied by detailed immunohistochemical analyses. A 70-year-old Japanese woman was referred to our hospital for functional examination of her left retroperitoneal mass. Her adrenal functions were normal, except for excessive dopamine secretion. After the tumorectomy, her dopamine level normalized. The histopathological diagnosis of the tumor was paraganglioma; this was confirmed by positive immunostaining of chromogranin A (CgA), tyrosine hydroxylase (TH), dopamine β-hydroxylase (DBH), and succinate dehydrogenase gene subunit B (SDHB)...
October 14, 2016: Endocrine Pathology
Dhananjaya Sharma, Shuji Isaji
Focused pathological attention to tumor invasion of the retroperitoneal resection margin after pancreaticoduodenectomy for cancer of head of the pancreas led to the knowledge of strong tendency of cancer cells to infiltrate into the retropancreatic tissue and to spread along the peripancreatic neural plexuses as the cause of local recurrence. The term 'mesopancreas' was coined to describe perineural lymphatic layer located dorsally to the pancreas and it was suggested that its complete resection will minimize loco-regional recurrence and improve outcome...
October 12, 2016: Journal of Hepato-biliary-pancreatic Sciences
Xiaobing Ju, Pu Li, Pengfei Shao, Qiang Lv, Zengjun Wang, Chao Qin, Jie Li
OBJECTIVE: To assess the feasibility of retroperitoneal laparoscopic nephrectomy combined with bench surgery and autotransplantation in treating complex renal tumor. PATIENTS AND METHODS: Six patients with complex renal tumor were seen in our institution between 2010 and 2014. Three patients with bilateral renal cell carcinoma underwent retroperitoneal laparoscopic nephrectomy on both sides. Extracorporeal tumorectomy and renal reconstruction were performed on the side of the smaller tumor and then kidney autotransplantation was performed...
October 13, 2016: Urologia Internationalis
Hong Seok Lee, Jeong Il Yu, Do Hoon Lim, Sung Joo Kim
PURPOSE: To evaluate the benefit of adjuvant radiation therapy (RT) for retroperitoneal liposarcoma (RPLS) following gross tumor removal. MATERIALS AND METHODS: We reviewed 77 patients with primary RPLS surgically treated between January 2000 and December 2013. Cases with gross residual disease were excluded. Tumor grade was evaluated according to the French Federation of Cancer Centers Sarcoma Group (FNCLCC) system. Adjuvant RT was delivered to 32 patients (42%) using external beam RT alone...
September 2016: Radiation Oncology Journal
Roy Mano, Maria F Becerra, Brett S Carver, George J Bosl, Robert J Motzer, Dean F Bajorin, Darren R Feldman, Joel Sheinfeld
PURPOSE: Fibrosis accounts for approximately 50% of histological findings at post-chemotherapy retroperitoneal lymph node dissection (PC-RPLND), and is associated with reported relapse rates of 10%-15%. We aimed to characterize patients with fibrosis at PC-RPLND, and identify predictors of adverse outcome within this group. MATERIALS AND METHODS: We reviewed the medical records of men who underwent PC-RPLND between 1989-2013 with histological findings of necrosis/fibrosis...
October 5, 2016: Journal of Urology
Patryk Kambakamba, John M Bonvini, Michael Glenck, Liliana Castrezana López, Thomas Pfammatter, Pierre-Alain Clavien, Michelle L DeOliveira
BACKGROUND: Irreversible electroporation is increasingly used for treatment of solid tumors, but safety data remain scarce. This study aimed to describe intraoperative adverse events associated with irreversible electroporation in patients undergoing solid tumor ablation. METHODS: We analyzed demographic and intraoperative data for patients (n = 43) undergoing irreversible electroporation for hepato-pancreato-biliary and retroperitoneal malignancies (2012 to 2015)...
October 2016: American Journal of Surgery
Gaurav Pahouja, Kalpit Patel, Daniel J Ricchiuti
OBJECTIVE: The aim of the study was to present a case series of the sparsely reported complication of chylous ascites (CA) after left sided robot-assisted laparoscopic partial nephrectomy (RALPN), identify possible risk factors for the development of postoperative CA, and explore current recommendations for identification, management and prevention of CA. MATERIAL AND METHODS: A retrospective review of patients that were treated with a RALPN during a one year time period (August 2012 to August 2013) by one surgeon at our institution was conducted...
October 5, 2016: Archivio Italiano di Urologia, Andrologia
Ming Chen, Lihua Zhang, Guochun Cao, Weidong Zhu, Xuqiu Chen, Quan Fang
Retroperitoneal inflammatory myofibroblastic tumor (IMT) is a rare lesion of unknown etiology. The management of IMT may be challenging due to its intermediate malignant potential, the possibility of local recurrence after surgical resection and its unique anatomic location, which makes radical resection impossible due to its proximity to vital structures. Thus, treatment for recurrence and metastasis mainly relies on chemotherapy. We herein report a case of a 60-year-old man with an IMT sized 6.7×5.1 cm, located in the left adrenal area, which was identified by a computed tomography (CT) scan of the abdomen...
October 2016: Molecular and Clinical Oncology
S Petit, C Vallin, B Morel, P Bertrand, P Blouin, H Lardy, D Sirinelli
PURPOSE: The goal of this study was to evaluate the incremental value of unenhanced phase in the initial evaluation of retroperitoneal tumors in children by comparison with an enhanced phase alone using computed tomography (CT). MATERIALS AND METHODS: A total of 53 patients (26 girls, 27 boys) with a total of 53 tumors who had CT examination of the abdomen and pelvis for the initial assessment of retroperitoneal tumor were retrospectively included. All CT examinations were obtained with an unenhanced set of CT images and a set of CT images obtained after intravenous administration of iodinated contrast material...
September 26, 2016: Diagnostic and Interventional Imaging
An-Na Zhu, Ming-Fei Guan, Yan Zhu, Yan Li, Li Zhou, Cong-Zhu Li, Ping Huang
OBJECTIVE: To evaluate the clinicopathological characteristics, treatment and prognosis of uterine malignant mixed mullerian tumor. METHODS: The clinical, pathologic and follow-up data of 16 patients with uterine malignant mixed Mullerian tumor treated in our hospital between March, 2003 and June, 2015 were analyzed. RESULTS: The 16 patients had a median age of 58 years at diagnosis, and 13 of them were postmenopausal. The number of patients with FIGO stage Ia, Ib, II, IIIa, IIIc2, and IV was 7, 3, 1, 3, 1, and 1, respectively...
August 20, 2016: Nan Fang Yi Ke da Xue Xue Bao, Journal of Southern Medical University
C Z Kong, S Q Du
In recent years the incidence of small renal carcinoma is increasing, and nephron sparing surgery(NSS) becomes the mainstream to treat it. NSS is considered based on comprehensive analysis: the imaging examination, systemic evaluation of the patients, and the indications of NSS. There are three common surgical approaches: intraperitoneal approach, retroperitoneal approach and the joint approach. It is recommended to do intraoperative frozen pathology. If the edge is positive, it is better to cut a deeper layer of the tissue around the renal tumor or transform to radical nephrectomy...
October 1, 2016: Zhonghua Wai Ke za Zhi [Chinese Journal of Surgery]
Victor E Corona Montes, Antonio L Pastore, Louis Gausa, Oscar Rodríguez-Faba, Alberto Breda, Joan Palou
BACKGROUND: Today, access to technology through robotic surgery has allowed urologists to have a valuable tool in order to perform various robot - assisted laparoscopic procedures. Robotic surgery allows reproducing complex techniques such as retroperitoneal or extended pelvic lymphadenectomy. The aim of the study was to report our series of robot assisted retroperitoneal lymphadenectomy and to demonstrate its technical and oncological feasibility. METHODS: A retrospective analysis on 7 patients (four cases of testicular tumors, one prostate adenocarcinoma, and two bladder urothelial carcinomas), who underwent retroperitoneal para-aortic, interaorto-cava and extended pelvic lymphadenectomy by robot assisted laparoscopic surgery, was conducted...
September 28, 2016: Minerva Urologica e Nefrologica, the Italian Journal of Urology and Nephrology
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