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Solid pseudopapillary tumor

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https://www.readbyqxmd.com/read/28208222/a-case-of-aggressive-solid-pseudopapillary-neoplasm-comparison-of-clinical-and-pathologic-features-with-non-aggressive-cases
#1
Yukihiro Watanabe, Kojun Okamoto, Katsuya Okada, Masayasu Aikawa, Isamu Koyama, Hiroshi Yamaguchi
Solid pseudopapillary neoplasms (SPNs) may have an aggressive clinical course, but clinical predictors of this condition have not been thoroughly evaluated. We performed a retrospective study of 11 cases of SPN managed in our hospital between January 2007 and April 2015. Of these 11 cases, we encountered a single case with an aggressive clinical course. Histological, immunohistochemical, and clinical features were compared to identify predictors of poor prognosis. The 11 patients comprised four women and seven men with a median age of 41 years (range, 26-58 years)...
February 16, 2017: Pathology International
https://www.readbyqxmd.com/read/28176498/successful-laparoscopic-distal-pancreatectomy-for-a-large-solid-pseudopapillary-neoplasm-a-case-report
#2
Seiichiro Tada, Taku Iida, Takayuki Anazawa, Shintaro Yagi, Satoru Seo, Toshihiko Masui, Toshimi Kaido, Kyoichi Takaori, Shinji Uemoto
A 30-year-old Japanese woman presented at our hospital with a pancreatic tumor. Contrast-enhanced CT revealed a tumor with a 12-cm diameter in the pancreatic body and tail. In the preoperative setting, endoscopic ultrasound-guided fine-needle aspiration permitted a histopathological diagnosis of solid pseudopapillary neoplasm. Twhe patient underwent laparoscopic distal pancreatectomy with splenectomy. Our procedure involved three steps. Firstly, the splenic artery was occluded to block inflow of blood to the tumor...
February 8, 2017: Asian Journal of Endoscopic Surgery
https://www.readbyqxmd.com/read/28133318/-a-case-report-of-an-undifferentiated-pancreatic-carcinoma-diagnosed-as-a-solid-pseudopapillary-neoplasm-before-surgery
#3
Hisataka Matsuo, Hisashi Ikoma, Ryo Morimura, Tomohiro Arita, Toshiyuki Kosuga, Hirotaka Konishi, Yasutoshi Murayama, Shuhei Komatsu, Atsushi Shiozaki, Yoshiaki Kuriu, Masayoshi Nakanishi, Daisuke Ichikawa, Hitoshi Fujiwara, Kazuma Okamoto, Eigo Otsuji
A 37-year-old man visited a previous hospital because of left abdominal pain. A contrast-enhanced CT scan revealed a 7 cm solid tumor in the pancreas body, and the patient was referred to our hospital. EUS-FNA showed that the tumor cells were positive for b-catenin in the nuclei, as well as for CD10 and CD56. On the other hand, the cells were negative for chromogranin A and synaptophysin. This is the typical immunohistochemical pattern of a solid pseudopapillary neoplasm(SPN). Therefore, we diagnosed this case as SPN before surgery...
November 2016: Gan to Kagaku Ryoho. Cancer & Chemotherapy
https://www.readbyqxmd.com/read/28131797/a-solid-pseudopapillary-neoplasm-of-the-pancreas-in-a-man-presenting-with-acute-pancreatitis-a-case-report
#4
Emi Chikuie, Saburo Fukuda, Hirofumi Tazawa, Toshihiro Nishida, Hideto Sakimoto
INTRODUCTION: A solid pseudopapillary neoplasm (SPN) of the pancreas is rare neoplasm that occurs predominantly in young women. The clinical presentation of SPNs is nonspecific, but acute pancreatitis is rare in the reported literature. PRESENTATION OF CASE: A 36-year-old man was referred to our hospital because of upper abdominal pain and elevation of serum amylase. A computed tomography (CT) scan showed swelling of the pancreas body and a poorly enhanced and indistinct mass in the pancreas body...
January 17, 2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/28112042/peritoneal-deciduoid-mesothelioma
#5
Nicole Dominiak, Whitney Graybill, William Gunning, Mary S Richardson, Laura S Spruill
This report highlights a diagnostically challenging case of diffuse deciduoid mesothelioma occurring in the peritoneum of a 25-year-old woman, 8 months postpartum. Optimally debulked tumor consisted of sheets of polygonal cells arranged in solid, trabecular, and pseudopapillary configurations, with vesicular, occasionally grooved nuclei and small nucleoli. A barrage of immunohistochemical stains revealed an unusual staining pattern characterized by diffusely positive keratin, WT-1, and mesothelin staining, but lack of calretinin positivity...
January 1, 2017: International Journal of Surgical Pathology
https://www.readbyqxmd.com/read/28107092/a-solid-pseudopapillary-neoplasm-of-the-pancreas-associated-with-igg4-related-pancreatitis
#6
Yuichiro Hatano, Keisuke Kawashima, Takuji Iwashita, Masaki Kimura, Masahito Shimizu, Akira Hara
A solid and cystic pancreatic lesion was incidentally found in a 62-year-old woman on abdominal computed tomography. The lesion was diagnosed as a solid pseudopapillary neoplasm by using endoscopic ultrasound-guided fine needle aspiration, and the tumor was resected. Histologically, the tumor cells had relatively small, round nuclei and papillary-like architecture in a hemorrhagic background. On immunohistochemical examination, the tumor cells were diffusely positive for nuclear β-catenin and cytoplasmic CD10...
November 1, 2016: International Journal of Surgical Pathology
https://www.readbyqxmd.com/read/28089954/solid-pseudopapillary-neoplasm-of-the-pancreas-ct-imaging-features-and-radiologic-pathologic-correlation
#7
Gopinathan Anil, Junwei Zhang, Nawal Ebrahim Al Hamar, Min En Nga
PURPOSE: We aimed to evaluate the imaging features of solid pseudopapillary neoplasm (SPN) of the pancreas with an emphasis on radiologic-pathologic correlation. METHODS: Ten patients (all female; mean age, 32 years) with histologic or cytologic diagnosis of SPN encountered between January 2007 and December 2013 were included in this study. Preoperative computed tomography (CT) images were reviewed for location, attenuation, enhancement pattern, margin, shape, size, morphology, presence of capsule and calcification...
January 16, 2017: Diagnostic and Interventional Radiology: Official Journal of the Turkish Society of Radiology
https://www.readbyqxmd.com/read/28054945/somatic-genetic-variation-in-solid-pseudopapillary-tumor-of-the-pancreas-by-whole-exome-sequencing
#8
Meng Guo, Guopei Luo, Kaizhou Jin, Jiang Long, He Cheng, Yu Lu, Zhengshi Wang, Chao Yang, Jin Xu, Quanxing Ni, Xianjun Yu, Chen Liu
Solid pseudopapillary tumor of the pancreas (SPT) is a rare pancreatic disease with a unique clinical manifestation. Although CTNNB1 gene mutations had been universally reported, genetic variation profiles of SPT are largely unidentified. We conducted whole exome sequencing in nine SPT patients to probe the SPT-specific insertions and deletions (indels) and single nucleotide polymorphisms (SNPs). In total, 54 SNPs and 41 indels of prominent variations were demonstrated through parallel exome sequencing. We detected that CTNNB1 mutations presented throughout all patients studied (100%), and a higher count of SNPs was particularly detected in patients with older age, larger tumor, and metastatic disease...
January 3, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28028341/solid-pseudopapillary-tumor-of-pancreas-a-lesser-known-entity-diagnosis-and-pitfalls-a-case-report
#9
Anshu Singh, Gyanendra Mohan, Sunanda Chaturvedi, Lalatendu Sarangi
Solid pseudopapillary tumor (SPT) is a rare pancreatic neoplasm with a reported incidence of 0.1% to 2.7% of all pancreatic tumors. Because radiological presentation of pancreatic tumors is quite overlapping, distinctive features in fine needle aspiration cytology (FNAC) helps in its diagnosis preoperatively. Being a low-grade malignancy presenting predominantly in young females, correct preoperative diagnosis minimizes the need of extensive surgery. SPT carries good prognosis without any adjuvant chemotherapy/radiotherapy in most cases, even in the presence of metastatic disease...
October 2016: Journal of Cytology
https://www.readbyqxmd.com/read/27994898/recurrence-of-solid-pseudopapillary-tumor-a-rare-pancreatic-tumor
#10
Chandra Punch, Nupur Garg, Penelope Harris
Solid pseudopapillary tumor of the pancreas (SPTP) is a rare disease of young females that does not usually recur after resection. Here we report a case of an elderly female with history of SPTP ten years ago who presented with anorexia and a palpable left lower quadrant abdominal mass. Imaging revealed metastatic disease and US-guided biopsy of the liver confirmed the diagnosis of SPTP. Due to her advanced age and comorbidities, she elected to undergo hospice care. The objective of this case report is to increase awareness of this tumor and its possibility of recurrence, necessitating further guidelines for follow-up...
2016: Case Reports in Oncological Medicine
https://www.readbyqxmd.com/read/27926361/nonductal-pancreatic-cancers
#11
REVIEW
Sun-Young Jun, Seung-Mo Hong
Nonductal pancreatic neoplasms, including solid pseudopapillary neoplasms, acinar cell carcinomas, and pancreatoblastomas, are uncommon. These entities share overlapping gross, microscopic, and immunohistochemical features, such as well-demarcated solid neoplasms, monotonous cellular tumor cells with little intervening stroma, and abnormal beta-catenin expression. Each tumor also has unique clinicopathologic characteristics with diverse clinical behavior. To differentiate nonductal pancreatic neoplasms, identification of histologic findings, such as pseudopapillae, acinar cell features, and squamoid corpuscles, is important...
December 2016: Surgical Pathology Clinics
https://www.readbyqxmd.com/read/27900090/traumatic-rupture-of-solid-pseudopapillary-tumors-of-the-pancreas-in-children-a-case-report
#12
Semih Lütfi Mirapoğlu, Ibrahim Aydogdu, Zuhal Gucin, Temel Fatih Yilmaz, Tarik Umutoglu, Huseyin Kilincaslan
Solid pseudopapillary tumor (SPT) of the pancreas is a pathological entity rarely encountered in children. Despite its malignant characteristics, SPT has a favorable clinical prognosis. This tumor is more frequently observed in females and is commonly localized in the tail and body of the pancreas. This is the case report of a 9-year-old female patient who presented with severe abdominal pain of sudden onset and vomiting following blunt abdominal trauma. Upon physical examination, abdominal distension, tenderness and abdominal guarding were detected...
November 2016: Molecular and Clinical Oncology
https://www.readbyqxmd.com/read/27894759/pancreaticoduodenectomy-for-pediatric-and-adolescent-pancreatic-malignancy-a-single-center-retrospective-analysis
#13
Erika B Lindholm, Abdulaziz K Alkattan, Sara J Abramson, Anita P Price, Todd E Heaton, Vinod P Balachandran, Michael P La Quaglia
PURPOSE: While pancreaticoduodenectomy (PD) has been extensively studied in adults, there are few data pertaining specifically to pediatric patients. We retrospectively analyzed PD-associated morbidity and mortality in pediatric patients. METHODS: Our analytic cohort included all consecutive patients ≤18years of age treated at our institution from 1993 to 2015 who underwent PD. Patient data (demographics, disease characteristics, surgical and adjuvant treatment, length of hospital stay, and postoperative course) were extracted from the medical records...
February 2017: Journal of Pediatric Surgery
https://www.readbyqxmd.com/read/27890912/performance-of-laparoscopic-pancreatoduodenectomy-for-solid-pseudopapillary-tumor-of-pancreas
#14
Orlando Jorge M Torres, José Maria A Moraes Junior, Anmara Moura Moraes, Camila Cristina S Torres, Antonio Talvane T Oliveira
BACKGROUND Solid pseudopapillary tumor of the pancreas (Frantz tumor) is a rare, low-grade malignant neoplasm. Laparoscopic pancreatoduodenectomy is a good approach for tumors located in the pancreatic head. We present two successful cases in young women. CASE REPORT A 19-year-old woman was admitted to Department of Digestive Surgery due to epigastric pain, nausea, and vomiting. Computed tomography scan of the abdomen was performed, and a 3.0×2.2 cm solid tumor localized in the head of the pancreas was observed...
November 28, 2016: American Journal of Case Reports
https://www.readbyqxmd.com/read/27816717/pancreatic-serous-cystic-neoplasms-accompanying-other-pancreatic-tumors
#15
So-Woon Kim, In Hye Song, Soyeon An, So Yeon Kim, Hyoung Jung Kim, Ki-Byung Song, Dae Wook Hwang, Sang Soo Lee, Jae Ho Byun, Dong-Wan Seo, Song Cheol Kim, Eunsil Yu, Seung-Mo Hong
Serous cystic neoplasms (SCNs) are benign cystic neoplasms that predominantly occur in the tail of the pancreas in elderly women. It is well known that patients with von Hippel-Lindau syndrome can develop SCNs and neuroendocrine tumors in the pancreas. However, our understanding on SCNs accompanying other pancreatic tumors (SCNAOPTs) is limited. We compared the clinicopathologic features of 15 surgically resected SCNAOPTs with 259 conventional SCNs. The prevalence of SCNAOPT was 5%. The SCNAOPTs were significantly smaller than conventional solitary SCNs, and they were more commonly observed in the head of the pancreas, while conventional solitary SCNs were more frequently noted in the body and tail...
November 2, 2016: Human Pathology
https://www.readbyqxmd.com/read/27806771/-surgical-treatment-of-pancreatic-cystic-neoplasms-follow-up-or-surgical-intervention
#16
X D Tian, Y M Yang
Pancreatic cystic neoplasm(PCN) are common and increasingly detected in recent years including serous cystic neoplasms, mucinous cystic neoplasms, intraductal papillary mucinous neoplasms, solid pseudopapillary neoplasms and cystic pancreatic neuroendocrine tumors.Some of PCN have a low risk of malignancy while others have a high risk and need interventions, even in the same type of cystic neoplasms. The management of PCN requires risk stratification for malignant potential, and clinicians should have a systematic approach for establishing a diagnosis and determining which patients require surgical treatment...
November 1, 2016: Zhonghua Wai Ke za Zhi [Chinese Journal of Surgery]
https://www.readbyqxmd.com/read/27784972/pancreatic-neuroendocrine-tumor-and-solid-pseudopapillary-neoplasm-key-immunohistochemical-profiles-for-differential-diagnosis
#17
Yusuke Ohara, Tatsuya Oda, Shinji Hashimoto, Yoshimasa Akashi, Ryoichi Miyamoto, Tsuyoshi Enomoto, Kaishi Satomi, Yukio Morishita, Nobuhiro Ohkohchi
AIM: To reveal better diagnostic markers for differentiating neuroendocrine tumor (NET) from solid-pseudopapillary neoplasm (SPN), focusing primarily on immunohistochemical analysis. METHODS: We reviewed 30 pancreatic surgical specimens of NET (24 cases) and SPN (6 cases). We carried out comprehensive immunohistochemical profiling using 9 markers: Synaptophysin, chromogranin A, pan-cytokeratin, E-cadherin, progesterone receptor, vimentin, α-1-antitrypsin, CD10, and β-catenin...
October 14, 2016: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/27693645/comparing-3-guidelines-on-the-management-of-surgically-removed-pancreatic-cysts-with-regard-to-pathological-outcome
#18
Selma J Lekkerkerker, Marc G Besselink, Olivier R Busch, Joanne Verheij, Marc R Engelbrecht, Erik A Rauws, Paul Fockens, Jeanin E van Hooft
BACKGROUND AND AIMS: Currently, 3 guidelines are available for the management of pancreatic cysts. These guidelines vary in their indication for resection of high-risk cysts. We retrospectively compared the final pathologic outcome of surgically removed pancreatic cysts with the indications for resection according to 3 different guidelines. METHODS: Patients who underwent pancreatic resection were extracted from our prospective pancreatic cyst database (2006-present)...
September 29, 2016: Gastrointestinal Endoscopy
https://www.readbyqxmd.com/read/27580541/pancreatic-hepatoid-carcinoma-mimicking-a-solid-pseudopapillary-neoplasm-a-challenging-case-on-endoscopic-ultrasound-guided-fine-needle-aspiration
#19
Yutaka Akimoto, Hironari Kato, Kazuyuki Matsumoto, Ryo Harada, Shinsuke Oda, Soichiro Fushimi, Shou Mizukawa, Shuntaro Yabe, Daisuke Uchida, Hiroyuki Seki, Takeshi Tomoda, Naoki Yamamoto, Shigeru Horiguchi, Koichiro Tsutsumi, Takahito Yagi, Hiroyuki Okada
A 59-year-old man was admitted to our hospital for treatment of a 45 mm pancreatic mass found during a medical examination. Endoscopic ultrasound-guided fine-needle aspiration cytology showed polygonal cells with pseudopapillary structures. The tumor cells were positive for nuclear/cytoplasmic β-catenin and CD10, and negative for chromogranin A. After a tentative diagnosis of a solid pseudopapillary neoplasm, middle pancreatectomy was performed. Histologically, polygonal cells with abundant eosinophilic cytoplasm formed in the trabeculae and were immunohistochemically positive for HepPar1 and protein induced by vitamin K absence or antagonist-II...
2016: Internal Medicine
https://www.readbyqxmd.com/read/27539223/bcl9l-expression-in-pancreatic-neoplasia-with-a-focus-on-spn-a-possible-explanation-for-the-enigma-of-the-benign-neoplasia
#20
Cora Hallas, Julia Phillipp, Lukas Domanowsky, Bettina Kah, Katharina Tiemann
BACKGROUND: Solid pseudopapillary neoplasms of the pancreas (SPN) are rare tumors affecting mainly women. They show an activating mutation in CTNNB1, the gene for β-catenin, and consequently an overactivation of the Wnt/β-catenin pathway. This signaling pathway is implied in the pathogenesis of various aggressive tumors, including pancreatic adenocarcinomas (PDAC). Despite this, SPN are characterized by an unusually benign clinical course. Attempts to explain this lack of malignancy have led to the discovery of an aberrant expression of the transcription factor FLI1 in SPN...
2016: BMC Cancer
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