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Liposarcoma

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https://www.readbyqxmd.com/read/28337832/retroperitoneal-dedifferentiated-liposarcoma-with-huge-cystic-degeneration-a-case-report
#1
Kazuyoshi Uchihashi, Atsuji Matsuyama, Eisuke Shiba, Yoshizo Kimura, Toshiro Ogata, Kei Yabuki, Hiroshi Harada, Chisachi Kubo, Yojiro Tsuda, Mao Jotatsu, Masanori Hisaoka
Prominent cyst formation is an unusual feature of liposarcoma. We report here a case of dedifferentiated liposarcoma with huge cystic change without preoperative chemo- or radiation therapy. The lesion arose in the retroperitoneum juxtaposed to the right kidney of a 67-year-old woman. She underwent a surgical removal of the retroperitoneal cyst. The cystic tumor contained 1600 mL of old bloody fluid, and its wall was composed of edematous, inflamed or sclerosing fibrous tissue with fatty tissue containing abundant atypical stromal cells, which were immunohistochemically positive for MDM2 and CDK4, and demonstrated MDM2 gene amplification by fluorescence in situ hybridization...
March 23, 2017: Pathology International
https://www.readbyqxmd.com/read/28331547/application-of-high-resolution-genomic-profiling-in-the-differential-diagnosis-of-liposarcoma
#2
Magdalena Koczkowska, Beata Stefania Lipska-Ziętkiewicz, Mariola Iliszko, Janusz Ryś, Markku Miettinen, Jerzy Lasota, Wojciech Biernat, Agnieszka Harazin-Lechowska, Anna Kruczak, Janusz Limon
BACKGROUND: Rarity and heterogeneity of liposarcomas (LPS) make their diagnosis difficult even for sarcoma-experts pathologists. The molecular mechanism underlying the development and progression of liposarcomas (LPS) remains only partially known. In order to identify and compare the genomic profiles, we analyzed array-based comparative genomic hybridization (array-CGH) profiles of 66 liposarcomas, including well-differentiated (WDLPS), dedifferentiated (DDLPS) and myxoid (MLPS) subtypes...
2017: Molecular Cytogenetics
https://www.readbyqxmd.com/read/28324749/a-phase-i-study-of-sar405838-a-novel-human-double-minute-2-hdm2-antagonist-in-patients-with-solid-tumours
#3
Maja de Jonge, Vincent A de Weger, Mark A Dickson, Marlies Langenberg, Axel Le Cesne, Andrew J Wagner, Karl Hsu, Wei Zheng, Sandrine Macé, Gilles Tuffal, Koruth Thomas, Jan H M Schellens
PURPOSE: In tumours with wild-type TP53, the tumour-suppressive function of p53 is frequently inhibited by HDM2. This phase I, dose-escalating study investigated the maximum tolerated dose (MTD), safety, pharmacokinetics and pharmacodynamics of SAR405838, an HDM2 inhibitor, in patients with advanced solid tumours (NCT01636479). METHODS: In dose escalation, patients with any locally advanced/metastatic solid tumour with TP53 mutation prevalence below 40%, or documented as TP53 wild-type, were eligible...
March 16, 2017: European Journal of Cancer
https://www.readbyqxmd.com/read/28322185/well-differentiated-liposarcoma-in-a-bonnet-macaque-macaca-radiata
#4
Cynthia J Doane Paula J Johnson And David G Besselsen
Here we describe the occurrence of a subcutaneous liposarcoma in a geriatric bonnet macaque (Macaca radiata). Clinicalpresentation was a rapidly growing, ulcerated, subcutaneous mass in the umbilical region of a 28-y-old intact female macaque. The mass was successfully removed through excisional biopsy, and histopathology provided a morphologic diagnosis of well-differentiated liposarcoma. The macaque recovered without complication and displayed no signs of recurrence for at least 18 mo after excision. To our knowledge, this case represents the first report of liposarcoma in a bonnet macaque...
March 20, 2017: Comparative Medicine
https://www.readbyqxmd.com/read/28300575/correlation-of-histological-grade-of-dedifferentiation-with-clinical-outcome-in-55-patients-with-dedifferentiated-liposarcomas
#5
Kossivi Dantey, Karen Schoedel, Oleksandr Yergiyev, David Bartlett, Uma N M Rao
In this study the histologic grade of dedifferentiated liposarcomas was correlated with outcome in surgically resected specimens in 55 patients over a 19-year period at the University of Pittsburgh Medical Center. The tumors were located in the retroperitoneum (N=34); the extremities and thigh (N=16), and the remainder involved the spermatic cord and head and neck. Most tumors were large (mean=21 cm.) Follow up was available in all 55 patients (median=36months). Forty-one tumors classified as high-grade dedifferentiated liposarcoma (HG-DDLPS) had mitotically active pleomorphic and spindle cells and foci of necrosis...
March 11, 2017: Human Pathology
https://www.readbyqxmd.com/read/28298998/condylar-intramedullary-intraosseous-lipoma-contribution-of-a-new-case-and-review-of-the-literature
#6
Alba Sanjuan, Alicia Dean, Blas Garcia, Francisco Alamillos, Elisa Roldan, Antonio Blanco
BACKGROUND: Lipoma is the most common benign tumour of the human body, being intraosseous involvement very rare. Just 1 to 4% of all cases of lipoma are located in the oral cavity, only 0.1% being intraosseous. The jaw is its most uncommon bone location. Etiology of intraosseous lipoma (IOL) is unknown, although several theories have been proposed. Usually asymptomatic, the symptoms, when present, will depend on its location and size. Its origin may be intraosseous or juxtacortical. A biopsy is essential for diagnosis, and definitive treatment involves resection or curettage of the lesion...
March 2017: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/28291056/perspectives-on-low-grade-sarcomas-the-extraordinary-contributions-of-sharon-w-weiss-md
#7
Hope Hastings, John R Goldblum
Soft-tissue pathology encompasses a wide spectrum of neoplasms that represent some of the most challenging and problematic tumors in surgical pathology. Owing to the intensive work of dedicated pathologists, this once esoteric field has become increasingly well defined. In this review, Dr Sharon Weiss' monumental contributions to low-grade sarcomas, including low-grade fibromyxoid sarcoma/so-called hyalinizing spindle cell tumor, atypical lipomatous tumor/well-differentiated liposarcoma and dedifferentiated liposarcoma, epithelioid hemangioendothelioma, and dermatofibrosarcoma protuberans with fibrosarcomatous transformation will be discussed...
March 13, 2017: Advances in Anatomic Pathology
https://www.readbyqxmd.com/read/28288036/gist-manifesting-as-a-retroperitoneal-tumor-clinicopathologic-immunohistochemical-and-molecular-genetic-study-of-112-cases
#8
Markku Miettinen, Anna Felisiak-Golabek, Zengfeng Wang, Shingo Inaguma, Jerzy Lasota
Most gastrointestinal stromal tumors (GISTs) occur in the tubular gastrointestinal (GI) tract, but some present apparently outside the GI tract. In this study, we analyzed 112 GISTs located in the retroperitoneum. These tumors occurred in 55 women and 57 men with a median age of 65 years (range: 21 to 89 y). On the basis of clinically or histologically detected connections to GI tract, 15 tumors were considered likely of gastric, 9 duodenal, and 13 of small intestinal origin. The remaining cases were categorized by location as peripancreatic (n=25), pelvic (n=11), mesenteric (n=4), and of unspecified/miscellaneous sites (n=35)...
March 10, 2017: American Journal of Surgical Pathology
https://www.readbyqxmd.com/read/28287938/soft-tissue-sarcomas-of-the-abdomen-and-pelvis-radiologic-pathologic-features-part-1-common-sarcomas-from-the-radiologic-pathology-archives
#9
Angela D Levy, Maria A Manning, Waddah B Al-Refaie, Markku M Miettinen
Soft-tissue sarcomas are a diverse group of rare mesenchymal malignancies that can arise at any location in the body and affect all age groups. These sarcomas are most common in the extremities, trunk wall, retroperitoneum, and head and neck. In the adult population, soft-tissue sarcomas arising in the abdomen and pelvis are often large masses at the time of diagnosis because they are usually clinically silent or cause vague or mild symptoms until they invade or compress vital organs. In contrast, soft-tissue sarcomas arising from the abdominal wall come to clinical attention earlier in the course of disease because they cause a palpable mass, abdominal wall deformity, or pain that is more clinically apparent...
March 2017: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/28283504/mk-8242-is-active-in-patients-with-p53-wild-type-advanced-solid-tumors
#10
(no author information available yet)
The MDM2 inhibitor MK-8242 is tolerable in patients with liposarcoma and other advanced solid tumors.
March 10, 2017: Cancer Discovery
https://www.readbyqxmd.com/read/28273913/als-linked-fus-exerts-a-gain-of-toxic-function-involving-aberrant-p38-mapk-activation
#11
Reddy Ranjith K Sama, Claudia Fallini, Rodolfo Gatto, Jeanne E McKeon, Yuyu Song, Melissa S Rotunno, Saul Penaranda, Izrail Abdurakhmanov, John E Landers, Gerardo Morfini, Scott T Brady, Daryl A Bosco
Mutations in Fused in Sarcoma/Translocated in Liposarcoma (FUS) cause familial forms of amyotrophic lateral sclerosis (ALS), a neurodegenerative disease characterized by progressive axonal degeneration mainly affecting motor neurons. Evidence from transgenic mouse models suggests mutant forms of FUS exert an unknown gain-of-toxic function in motor neurons, but mechanisms underlying this effect remain unknown. Towards this end, we studied the effect of wild type FUS (FUS WT) and three ALS-linked variants (G230C, R521G and R495X) on fast axonal transport (FAT), a cellular process critical for appropriate maintenance of axonal connectivity...
December 2017: Scientific Reports
https://www.readbyqxmd.com/read/28256200/mri-characteristics-associated-with-high-grade-myxoid-liposarcoma
#12
L H Gimber, E A Montgomery, C D Morris, E A Krupinski, L M Fayad
AIM: To identify magnetic resonance imaging (MRI) features differentiating high-grade (>5% round-cell component) from low-grade myxoid liposarcomas (LPS) (≤5% round-cell component). MATERIALS AND METHODS: Informed consent was waived. Patients with myxoid LPS and MRI before biopsy, neoadjuvant therapy, and surgery were included retrospectively. High-grade components were recorded from histological specimens by a pathologist (24 years of experience). Images were evaluated by a senior radiologist (>12 years of experience) for tumour size, location, tissue layer, and MRI features (signal intensity, heterogeneity, margin, and perilesional characteristics)...
February 27, 2017: Clinical Radiology
https://www.readbyqxmd.com/read/28245542/-recurrence-of-well-differentiated-intrascrotal-liposarcoma-in-retroperitoneum-five-years-after-resection-a-case-report
#13
Mitsuhiro Yoshinaga, Yosuke Sekii, Shigeaki Nakazawa, Masahiro Nakagawa, Hidefumi Kishikawa, Kenji Nishimura
A 68-year-old man underwent an inguinal orchiectomy for a right testicular tumor and the pathological diagnosis was atypical lipomatous tumor. Nine years later, a resection procedure was performed for local recurrence. Five years after that second surgery, abdominal computed tomography (CT) findings revealed a low density mass 40 mm in size on the back side of the right kidney and enlarged fat in the retroperitoneal space. We performed a laparoscopic tumor resection under a diagnosis of lipoma or liposarcoma recurrence, and the pathological diagnosis was well differentiated liposarcoma...
January 2017: Hinyokika Kiyo. Acta Urologica Japonica
https://www.readbyqxmd.com/read/28242632/fda-approval-summary-eribulin-for-patients-with-unresectable-or-metastatic-liposarcoma-who-have-received-a-prior-anthracycline-containing-regimen
#14
Christy L Osgood, Meredith K Chuk, Marc R Theoret, Lan Huang, Kun He, Leah Her, Patricia Keegan, Richard Pazdur
On January 28, 2016, the U.S. Food and Drug Administration (FDA) approved eribulin (Halaven, Eisai, Inc.) for the treatment of patients with unresectable or metastatic liposarcoma who have received a prior anthracycline-containing regimen. The approval was based on results from a single, randomized, open-label, active-controlled trial (Trial E7389-G000-309) enrolling 452 patients with advanced, locally recurrent or metastatic liposarcoma or leiomyosarcoma. Patients were randomized to eribulin 1.4 mg/m2 intravenously (IV) on Days 1 and 8 or dacarbazine 850, 1000, or1200 mg/m2 IV on Day 1 of a 21-day cycle...
February 27, 2017: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/28240971/phase-i-trial-of-the-human-double-minute-2-inhibitor-mk-8242-in-patients-with-advanced-solid-tumors
#15
Andrew J Wagner, Udai Banerji, Amit Mahipal, Neeta Somaiah, Heather Hirsch, Craig Fancourt, Amy O Johnson-Levonas, Raymond Lam, Amy K Meister, Giuseppe Russo, Clayton D Knox, Shelonitda Rose, David S Hong
Purpose To evaluate MK-8242 in patients with wild-type TP53 advanced solid tumors. Patients and Methods MK-8242 was administered orally twice a day on days 1 to 7 in 21-day cycles. The recommended phase II dose (RP2D) was determined on the basis of safety, tolerability, pharmacokinetics (PK), and by mRNA expression of the p53 target gene pleckstrin homology-like domain, family A, member 3 ( PHLDA3). Other objectives were to characterize the PK/pharmacodynamic (PD) relationship, correlate biomarkers with response, and assess tumor response...
February 27, 2017: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
https://www.readbyqxmd.com/read/28235629/primary-extraskeletal-osteosarcoma-a-clinicopathological-study-of-18-cases-focusing-on-mdm2-amplification-status
#16
Kyoko Yamashita, Kenichi Kohashi, Yuichi Yamada, Yoshihiro Nishida, Hiroshi Urakawa, Yoshinao Oda, Shinya Toyokuni
Extraskeletal osteosarcoma (ESOS) is an uncommon malignant neoplasm. Most ESOSs are high grade, although some low-grade cases have been reported. A few cases of ESOS with MDM2 amplification have also been reported, suggesting some similarity to skeletal low-grade osteosarcoma such as parosteal osteosarcoma, where MDM2 is often amplified. However, the frequency of low-grade cases and cases with MDM2 amplification among ESOSs remains unknown and their relationship is unclear. To clarify this, we examined 18 primary ESOS cases clinically, pathologically, and genetically, focusing on their MDM2 amplification status...
February 21, 2017: Human Pathology
https://www.readbyqxmd.com/read/28228897/primary-liposarcoma-of-the-diaphragm-a-rare-intra-abdominal-mass
#17
Károly András Virágh, Sergey Cherneykin, Roy Oommen, Zahra Shafaee
Primary malignant tumors of the diaphragm are rare, and primary liposarcoma of the diaphragm is extremely rare. The role of imaging is description of the anatomic relationships of the tumor as well as a suggestion of histologic diagnosis based on the presence of fatty and/or nonfatty components.
March 2017: Radiology case reports
https://www.readbyqxmd.com/read/28228139/hmga2-immunostaining-is-a-straightforward-technique-which-helps-to-distinguish-pulmonary-fat-forming-lesions-from-normal-adipose-tissue-in-small-biopsies-a-retrospective-observational-study-about-a-series-of-13-lung-biopsies
#18
Nicolas Piton, Émilie Angot, Florent Marguet, Jean-Christophe Sabourin
BACKGROUND: A tracheobronchial lesion observed during an endoscopic examination is usually sampled by the pulmonologist and sent to the pathologist for microscopic examination. Adipocytes may be observed in the lamina propria of tracheobronchial biopsies, which may complicate diagnosis of sampled lesions because these adipose cells may be part of the lesion (lipoma or pulmonary hamartoma), but may also be a normal component of the bronchial mucosa. Because endoscopic samples frequently miss their target, adipocytes observed in such biopsies usually lead to uncertainty regarding diagnosis...
February 23, 2017: Diagnostic Pathology
https://www.readbyqxmd.com/read/28223032/-primary-breast-sarcomas-about-30%C3%A2-cases-treated-at-salah-azaiez-institute-in-tunisia
#19
O El Amine Elhadj, M Nasri, S Thabet, J Ben Hassouna, A Goucha, K Rahal, A Elmay, A Gamoudi
PURPOSE: To identify retrospectively prognostic factors of primary breast sarcoma and review its treatment modalities. MATERIALS AND METHODS: This is a descriptive study on 30 cases of primary breast sarcoma. We carried out a univariate and multivariate analysis correlating clinical, pathological and therapeutic parameters with disease-free survival and overall survival. RESULTS: The mean age was 46.8 years. The mean tumour size was 10cm...
February 17, 2017: Cancer Radiothérapie: Journal de la Société Française de Radiothérapie Oncologique
https://www.readbyqxmd.com/read/28214485/outcome-of-peripheral-venous-reconstructions-during-tumor-resection
#20
Philip Y Sun, Mark D Fleming, Kendall Stauffer, Manju Kalra, Gustavo Oderich, Thomas Bower, Peter Gloviczki, Randall R DeMartino
OBJECTIVE: Peripheral venous reconstruction surgery may be necessary for appropriate oncologic resection; however, the operative approach and surgical outcomes are not well described. We report our experience with these complex reconstructions to identify best practice. METHODS: We retrospectively reviewed all adult patients who underwent peripheral vein reconstruction for tumor resection at Mayo Clinic, Rochester (2000-2015). Patients were classified into three subgroups by the location: iliac (IL), lower extremity (LE), and upper extremity (UE)...
March 2017: Journal of Vascular Surgery. Venous and Lymphatic Disorders
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