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spindle cell tumor

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https://www.readbyqxmd.com/read/28221292/dermatofibroma-of-the-eyelid-immunohistochemical-diagnosis
#1
Frederick A Jakobiec, Fouad R Zakka, Yufei Tu, Suzanne K Freitag
A 66-year-old man developed a painless 2 mm to 3 mm recurrent nodule at the left upper eyelid margin. Excision disclosed a spindle cell lesion without frank atypia or mitotic activity growing in a twisted fascicular pattern often referred to as storiform. All the surgical margins were involved with tumor. Immunohistochemistry demonstrated that many of the constituent spindle and dendritic tumor cells were CD34, factor XIIIa, and CD 163, the latter 2 being biomarkers for monocytic lineage. The lesion was diagnosed as a dermatofibroma rather than a fibrous histiocytoma, a term that should be reserved for more aggressive lesions of deeper fascial planes...
February 17, 2017: Ophthalmic Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/28214470/myopericytoma-in-urinary-bladder-a-case-report
#2
Takahiro Nagai, Toshio Kamimura, Kaoru Itou, Masato Fujii, Hiromasa Tsukino, Shoichiro Mukai, Yutaka Akiyama, Hiroaki Kataoka, Toshiyuki Kamoto
BACKGROUND: Myopericytoma is reported to occur mainly in the skin and superficial soft tissue of the extremities. In contrast, occurrence in the urinary bladder is extremely rare. CASE PRESENTATION: We describe a 75-year-old Japanese man who developed a submucosal tumor at the right trigone of his bladder that led to interference with the discharge of right ureteral calculus. No invasive growth was observed by magnetic resonance imaging. Transurethral resection was successfully performed; histopathological analysis revealed perivascular proliferation of spindle-shaped to oval-shaped, cytologically bland tumor cells with eosinophilic cytoplasm...
February 19, 2017: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/28210572/endobronchial-solitary-fibrous-tumor
#3
Cristiano Claudino Oliveira, Marcelo Padovani Toledo de Moraes, Thomas Colby, Gilmar Felisberto Oliveira, Erica Nishida Hasimoto, Daniele Cristina Cataneo, Antônio José Maria Cataneo, Julio De Faveri
Solitary fibrous tumor (SFT) is a mesenchymal neoplasm that appears primarily in the pleura and rarely in intrapulmonary or endobronchial topography. The authors report the case of a 47-year-old woman who presented obstructive respiratory symptoms for 4 years. The chest computed tomography and bronchoscopy showed an obstructive polypoid lesion located between the trachea and the left main bronchus associated with distal atelectasis of the left lung. A resection of the lesion was performed and, macroscopically, the mass was oval, encapsulated, and firm, measuring 2...
October 2016: Autopsy & case reports
https://www.readbyqxmd.com/read/28210409/primary-leiomyosarcoma-of-the-mandibular-alveolar-mucosa-of-a-12-year-old-child-from-ethiopia-a-case-report
#4
Tewodros Tefera Kenea, Betel Abebe Kebede, Fekadu Mesele Gozjuze, Hagos Kiros, Frank Wilde
Leiomyosarcomas (LMSs) are rare malignant mesenchymal tumors which show smooth-muscle differentiation. Most LMSs involving the oral tissues primarily affect the maxillary sinus, the maxillary or mandibular bone. We present a case of LMS of the mandibular alveolar mucosa, arising in a 12-year-old male child from Ethiopia. A malignant spindle cell-like neoplasm was diagnosed on clinical and radiographic findings as well as on incisional biopsy. The tumor was resected with wide margins. The following histopathologic examination with additional immunohistochemical studies secured the diagnosis LMS...
March 2017: Craniomaxillofacial Trauma & Reconstruction
https://www.readbyqxmd.com/read/28209915/exclusive-destruction-of-mitotic-spindles-in-human-cancer-cells
#5
Leonid Visochek, Asher Castiel, Leonid Mittelman, Michael Elkin, Dikla Atias, Talia Golan, Shai Izraeli, Tamar Peretz, Malka Cohen-Armon
We identified target proteins modified by phenanthrenes that cause exclusive eradication of human cancer cells. The cytotoxic activity of the phenanthrenes in a variety of human cancer cells is attributed by these findings to post translational modifications of NuMA and kinesins HSET/kifC1 and kif18A. Their activity prevented the binding of NuMA to α-tubulin and kinesins in human cancer cells, and caused aberrant spindles. The most efficient cytotoxic activity of the phenanthridine PJ34, caused significantly smaller aberrant spindles with disrupted spindle poles and scattered extra-centrosomes and chromosomes...
February 15, 2017: Oncotarget
https://www.readbyqxmd.com/read/28208958/radiological-and-histopathological-outcome-of-giant-cell-tumor-of-femur-with-denosumab-treatment-a-case-report
#6
Preethi Dileep Menon, R Krishnakumar, Annie Jojo
Giant Cell Tumour of Bone (GCTB) is a benign but locally aggressive osteolytic skeletal neoplasm of young adults consisting of giant cells expressing RANK (Receptor Activator of Nuclear Factor-κB) and mesenchymal spindle-like stromal cells expressing RANKL (RANK ligand). The interaction of these cells leads to bone resorption. Recently, the RANKL inhibitor, denosumab, has demonstrated activity against giant-cell tumours. The current article reports a case of a Giant cell tumour of left distal femur with pathological fracture...
December 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28203428/multiple-cavitating-pulmonary-nodules-rare-manifestation-of-benign-metastatic-leiomyoma
#7
Sa Ra Lee, Youn-I Choi, Seok Jeong Lee, Sung Shine Shim, Jin Hwa Lee, Yoo Kyung Kim, Soon Hee Sung
Benign metastasizing leiomyoma (BML) is a rare disease of pathologically benign, but the tumor metastasizes to other organs. The most common organ involved in BML is lung. Pulmonary involvement usually manifested as multiple nodules on chest X-ray, however we experienced an interesting case of a 52-year-old premenopausal woman who presented with multiple bilateral lung cavitations and nodules on a chest X-ray without any respiratory symptoms. Chest computed-tomography identified multiple cavitary lesions of 5-12 mm in diameter and well-defined nodules of 5-10 mm in diameter in both lung fields...
January 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/28202658/mechanisms-for-nonmitotic-activation-of-aurora-a-at-cilia
#8
REVIEW
Vladislav Korobeynikov, Alexander Y Deneka, Erica A Golemis
Overexpression of the Aurora kinase A (AURKA) is oncogenic in many tumors. Many studies of AURKA have focused on activities of this kinase in mitosis, and elucidated the mechanisms by which AURKA activity is induced at the G2/M boundary through interactions with proteins such as TPX2 and NEDD9. These studies have informed the development of small molecule inhibitors of AURKA, of which a number are currently under preclinical and clinical assessment. While the first activities defined for AURKA were its control of centrosomal maturation and organization of the mitotic spindle, an increasing number of studies over the past decade have recognized a separate biological function of AURKA, in controlling disassembly of the primary cilium, a small organelle protruding from the cell surface that serves as a signaling platform...
February 8, 2017: Biochemical Society Transactions
https://www.readbyqxmd.com/read/28197724/histological-and-immunohistochemical-characteristics-of-undifferentiated-small-round-cell-sarcomas-associated-with-cic-dux4-and-bcor-ccnb3-fusion-genes
#9
Yuichi Yamada, Masaaki Kuda, Kenichi Kohashi, Hidetaka Yamamoto, Junkichi Takemoto, Takeaki Ishii, Kunio Iura, Akira Maekawa, Hirofumi Bekki, Takamichi Ito, Hiroshi Otsuka, Makoto Kuroda, Yumi Honda, Shinji Sumiyoshi, Takeshi Inoue, Naoe Kinoshita, Atsushi Nishida, Kyoko Yamashita, Ichiro Ito, Shizuo Komune, Tomoaki Taguchi, Yukihide Iwamoto, Yoshinao Oda
CIC-DUX4 and BCOR-CCNB3 fusion-gene-associated small round cell sarcomas account for a proportion of pediatric small round cell sarcomas, but their pathological features have not been sufficiently clarified. We reviewed a large number of soft tissue tumors registered at our institution, retrieved the cases of unclassified tumors with a small round cell component, and subjected them to histopathological, immunohistochemical, and gene profile analysis. We reviewed 164 cases of unclassified tumors with a small round cell component and analyzed them by RT-PCR and FISH...
February 14, 2017: Virchows Archiv: An International Journal of Pathology
https://www.readbyqxmd.com/read/28193293/loss-of-chromosome-13-material-in-cellular-angiofibromas-indicates-pathogenetic-similarity-with-spindle-cell-lipomas
#10
Ioannis Panagopoulos, Ludmila Gorunova, Bodil Bjerkehagen, Kristin Andersen, Marius Lund-Iversen, Sverre Heim
BACKGROUND: Cellular angiofibroma is a rare benign mesenchymal neoplasm with morphological and immunohistochemical similarities to spindle cell lipoma. Karyotypic information on cellular angiofibroma is restricted to one case only which showed loss of material from chromosomes 13 and 16. A few other studies using fluorescence in situ hybridization showed deletions of the RB1 and FOXO1 loci, both of which are located in chromosome band 13q14. We present here cytogenetic data on two cellular angiofibromas with an abnormal karyotype...
February 13, 2017: Diagnostic Pathology
https://www.readbyqxmd.com/read/28190928/metastatic-hemangiosarcoma-of-the-liver-in-a-young-rat
#11
Makoto Tanaka, Seiji Miyoshi, Osamu Sawamoto
Spontaneous hemangiosarcoma is generally uncommon in rats. Furthermore, there are only a few case reports in young rats. This report describes a spontaneous hemangiosarcoma in a young 7-week-old rat. At necropsy, no remarkable changes were noted in any organs including the liver. Histopathologically, multifocal small tumors were located mainly in the perilobular region of the liver. The tumors comprised polygonal to short spindle-shaped cells that showed cellular atypia and local infiltration. In the foci, there were blood-filled spaces lined by spindle-shaped cells...
January 2017: Journal of Toxicologic Pathology
https://www.readbyqxmd.com/read/28190926/malignant-mast-cell-tumor-of-the-thymus-in-an-royal-college-of-surgeons-rcs-rat
#12
Yui Terayama, Tetsuro Matsuura, Kiyokazu Ozaki
A 152-week-old male Royal College of Surgeons (RCS) rat kept as a non-treated animal in a long-term animal study presented with a soft mass in the anterior mediastinum, which adhered to the pleura of the lung. Histopathologically, the mass mainly consisted of round to short spindle-shaped tumor cells that had infiltrated through the hyperplastic thymic tissue. The tumor cells were arranged in loose to dense sheets. Nuclei were moderate in size and round to spindle-shaped, with small nucleoli. Almost all tumor cells exhibited abundant eosinophilic cytoplasm, including eosinophilic granules of a range of sizes...
January 2017: Journal of Toxicologic Pathology
https://www.readbyqxmd.com/read/28190820/pulmonary-neuroendocrine-tumor-in-a-female-wolf-canis-lupus-lupus
#13
Ayako Shiraki, Toshinori Yoshida, Masahi Kawashima, Hirotada Murayama, Rei Nagahara, Nanao Ito, Makoto Shibutani
A 17-year-old female wolf (Canis lupus lupus) had a right lung mass that was adhered to the thoracic cavity. Histopathological examination revealed that the mass consisted of sheets, cord or ribbon-like structures of monotonous, small, cuboidal cells with round, oval or short-spindle nuclei and scant clear cytoplasm, demarcated by a fine fibrovascular stroma. Focal necrosis, congestion and thrombi were observed. Immunohistochemically, the tumor cells diffusely expressed cytokeratin AE1/AE3, and some expressed chromogranin A, neural cell adhesion molecule (CD56) and thyroid transcription factor-1...
February 11, 2017: Journal of Veterinary Medical Science
https://www.readbyqxmd.com/read/28188513/breast-metastasis-of-pulmonary-pleomorphic-carcinoma-a-case-report
#14
Tomoyuki Fujita, Hajime Nishimura, Ryoichi Kondo, Kinya Furukawa, Yukio Morishita, Minoru Fujimori
BACKGROUND: Lung cancer rarely metastasizes to the breast, and breast metastasis of pulmonary pleomorphic carcinoma has not been previously reported. CASE PRESENTATION: The patient was a 66-year-old woman who became aware of a mass in the right breast and visited a physician. She was referred to our department for close examination, upon which she was diagnosed with double cancer (right breast cancer and left lung cancer). Needle biopsy findings for the mammary tumor were similar to those for the lung biopsy specimen, but spindle cell or metaplastic carcinoma were possibilities...
December 2017: Surgical Case Reports
https://www.readbyqxmd.com/read/28185461/-epithelial-mesenchymal-transition-in-tumor-tissue-and-its-role-for-metastatic-spread-of-cancer
#15
V M Matějka, J Fínek, M Králíčková
BACKGROUND: Metastasis, recurrence, and resistance to chemotherapy are leading causes of the majority of cancer-related mortality worldwide. The process of metastasis can be artificially divided into a series of sequential, highly organized, and organ-specific steps. The underlying mechanisms are still poorly understood, but are believed to be mediated by epithelial-mesenchymal transition (EMT). First described in embryogenesis, EMT is a cellular reprogramming process in which epithelial cells acquire a mesenchymal phenotype...
2017: Klinická Onkologie: Casopis Ceské a Slovenské Onkologické Spolecnosti
https://www.readbyqxmd.com/read/28185423/granulocyte-colony-stimulating-factor-producing-pancreatic-anaplastic-carcinoma-in-ascitic-fluid-at-initial-diagnosis-a-case-report
#16
Nao Kubota, Yoshiki Naito, Akihiko Kawahara, Tomoki Taira, Tomohiko Yamaguchi, Tomoko Yoshida, Hideyuki Abe, Yorihiko Takase, Chihiro Fukumitsu, Kazuya Murata, Yusuke Ishida, Yoshinobu Okabe, Yoshizo Kimura, Masahiko Tanigawa, Yutaro Mihara, Masamichi Nakayama, Rin Yamaguchi, Jun Akiba, Hirohisa Yano
Granulocyte colony-stimulating factor (G-CSF)-producing pancreatic tumors are extremely rare. These tumors have an aggressive clinical course and no established treatment. Here, we report an autopsy case of G-CSF-production in pancreatic anaplastic carcinoma (PAC). A 72-year-old woman presented with a large pancreatic head mass and multiple liver metastases. Laboratory data showed leukocytosis (leukocyte count 113.3 × 10(3) /µL) and high serum G-CSF levels (441 pg/mL; normal range: <39.0 pg/mL). The ascitic fluid was submitted to our pathology laboratory at initial diagnosis...
February 10, 2017: Diagnostic Cytopathology
https://www.readbyqxmd.com/read/28185325/a-case-of-high-grade-astrocytoma-with-braf-and-atrx-mutations-following-a-long-standing-course-over-two-decades
#17
Satoshi Nakata 中田 聡, Keishi Horiguchi, Shogo Ishiuchi, Yuhei Yoshimoto, Seiji Yamada, Sumihito Nobusawa, Hayato Ikota, Junko Hirato, Hideaki Yokoo
Pediatric high-grade gliomas are rare and occasionally hard to classify. These tumors often feature a well-demarcated histology and are expected to have a better outcome than ordinary diffuse high-grade gliomas in adults. We herein report a case of circumscribed high-grade glioma that showed a distinct molecular profile and followed an excellent course for 26 years. The patient, a 3-year-old boy at onset, presented with a contrast-enhancing mass in the right temporal lobe and underwent resection. Histologically, the tumor mainly consisted of compact bundles of GFAP-positive spindle cells...
February 9, 2017: Neuropathology: Official Journal of the Japanese Society of Neuropathology
https://www.readbyqxmd.com/read/28176365/high-efficacy-of-pazopanib-on-an-undifferentiated-spindle-cell-sarcoma-resistant-to-first-line-therapy-is-identified-with-a-patient-derived-orthotopic-xenograft-pdox-nude-mouse-model
#18
Kentaro Igarashi, Kei Kawaguchi, Takashi Murakami, Tasuku Kiyuna, Kentaro Miyake, Arun S Singh, Scott D Nelson, Sarah Dry, Yunfeng Li, Norio Yamamoto, Katsuhiro Hayashi, Hiroaki Kimura, Shinji Miwa, Hiroyuki Tsuchiya, Fritz C Eilber, Robert M Hoffman
Undifferentiated spindle-cell sarcoma (USCS) is a recalcitrant cancer. Our laboratory pioneered the patient-derived orthotopic xenograft (PDOX) nude mouse model with the technique of surgical orthotopic implantation (SOI). In the present study, we evaluated the efficacy of standard first-line chemistry of doxorubicin (DOX), gemcitabine (GEM) combined with docetaxel (DOC), compared to pazopanib (PAZ), a multi-targeting tyrosine-kinase inhibitor, in an USCS PDOX model. A high-grade USCS from a striated muscle of the patients was grown orthotopically in the right biceps femoris muscle of nude mice to establish the PDOX model...
February 8, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28174095/anti-mitotic-agents-are-they-emerging-molecules-for-cancer-treatment
#19
REVIEW
Larissa Siqueira Penna, João Antonio Pêgas Henriques, Diego Bonatto
Mutations in cancer cells frequently result in cell cycle alterations that lead to unrestricted growth compared to normal cells. Considering this phenomenon, many drugs have been developed to inhibit different cell-cycle phases. Mitotic phase targeting disturbs mitosis in tumor cells, triggers the spindle assembly checkpoint and frequently results in cell death. The first anti-mitotics to enter clinical trials aimed to target tubulin. Although these drugs improved the treatment of certain cancers, and many anti-microtubule compounds are already approved for clinical use, severe adverse events such as neuropathies were observed...
February 4, 2017: Pharmacology & Therapeutics
https://www.readbyqxmd.com/read/28173669/-clinicopathologic-analysis-of-ewing-like-bcor-ccnb3-undifferentiated-sarcoma
#20
X J Wang, D H Zhao, Y M Wang, Y X Liu, X Li, M Y Li, W C Li, Z Wang
Objective: To investigate the morphologic, immunohistochemical, genetic, clinical features and prognosis of Ewing-like BCOR-CCNB3 gene fusion undifferentiated sarcoma (BCOR-CCNB3 fusion sarcoma). Method: Seventeen Ewing-like sarcoma cases were screened for CCNB3 expression and BCOR-CCNB3 fusion transcripts by immunohistochemistry and RT-PCR among 260 cases of Ewing-like sarcomas collected during Jan, 2006 to Dec, 2015. Three cases of BCOR-CCNB3 fusion sarcoma were found among 17 atypical Ewing sarcomas, and follow-up were conducted...
February 8, 2017: Zhonghua Bing Li Xue za Zhi Chinese Journal of Pathology
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