keyword
MENU ▼
Read by QxMD icon Read
search

Myopericytoma

keyword
https://www.readbyqxmd.com/read/28549043/traumatic-facial-myopericytoma-a-differential-to-consider
#1
Rachel E Aliotta, Patrick Veerkamp, Paul Durand, Melissa Piliang, Raymond Isakov
Myopericytoma is a slow-growing, benign soft tissue neoplasm that arises from perivascular smooth muscle cells. This tumor is a rare entity itself, but it is only scarcely mentioned in the literature occurring secondary to trauma. The authors report a 21-year-old male patient who presented with a pulsatile mass in the medial canthal area where he had experienced previous trauma from a car accident 1-year prior. The mass was excised and histopathology revealed myopericytoma. This clinical report adds to the limited body of evidence supporting trauma as an etiology for this rare tumor...
May 25, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28505006/myopericytomatosis-clinicopathologic-analysis-of-11-cases-with-molecular-identification-of-recurrent-pdgfrb-alterations-in-myopericytomatosis-and-myopericytoma
#2
Yin P Hung, Christopher D M Fletcher
Myopericytoma is a benign tumor of concentrically distributed perivascular myoid cells. Its molecular basis and relationship with myofibroma/myofibromatosis and other pericytic tumors are not fully understood. In our consultation/surgical files of over 1000 myopericytic lesions, we identified 11 cases with diffuse dermal/subcutaneous involvement by microscopic myopericytomatous nodules, a phenomenon we have termed myopericytomatosis. Myopericytomatosis affected mostly adults (female:male=8:3; median age, 37 y; range, 9 to 63 y) in the lower extremities (foot/ankle, 5; calf, 3; knee, 1; thigh, 1; neck, 1) over months to 25 years, ranging from 1...
May 12, 2017: American Journal of Surgical Pathology
https://www.readbyqxmd.com/read/28442859/digital-myopericytoma-a-case-report-and-systematic-literature-review
#3
Alexander Morzycki, Nadim Joukhadar, Amanda Murphy, Jason Williams
A myopericytoma (MP) is an exceedingly rare perivascular tumor of unknown etiology. Given their potential for mimicry and malignancy, MP tumors pose a unique challenge for surgeons and may be overlooked on differential diagnosis. We present a case report of an otherwise healthy 33-year-old right-hand dominant male who presented to our outpatient clinic with a 2-month history of painless swelling and erythema of the pulp of his left index finger. Subsequent plain film X-ray showed near-complete bony destruction of his distal phalanx...
April 2017: Journal of Hand and Microsurgery
https://www.readbyqxmd.com/read/28438616/pericytic-tumors-of-the-kidney-a-clinicopathologic-analysis-of-17-cases
#4
Deepika Sirohi, Steven C Smith, Jonathan I Epstein, Bonnie L Balzer, Jeffry P Simko, Dana Balitzer, Jamal Benhamida, Oleksandr N Kryvenko, Nilesh S Gupta, Swetha Paluru, Isabela Werneck da Cunha, Daniel N Leal, Sean R Williamson, Mariza de Peralta-Venturina, Mahul B Amin
The pericytic (perivascular myoid cell) family of tumors is a distinctive group of mesenchymal neoplasms encountered in superficial sites and only rarely seen in viscera. The pericytic family subtends a spectrum of lesions, namely, glomus tumors and variants; myopericytoma, including myofibroma; and angioleiomyoma. In light of the contemporary classification of pericytic lesions, we identified and reviewed 17 cases of renal pericytic tumors from the files of 6 referral centers. These tumors presented over an age range of 17 to 76years (mean 46...
April 21, 2017: Human Pathology
https://www.readbyqxmd.com/read/28248815/recurrent-srf-rela-fusions-define-a-novel-subset-of-cellular-myofibroma-myopericytoma-a-potential-diagnostic-pitfall-with-sarcomas-with-myogenic-differentiation
#5
Cristina R Antonescu, Yun-Shao Sung, Lei Zhang, Narasimhan P Agaram, Christopher D Fletcher
Cellular myofibroblastic tumors other than desmoid-type fibromatosis are often diagnostically challenging due to their relative rarity, lack of known genetic abnormalities, and expression of muscle markers which may be confused with sarcomas with myogenic differentiation. In this study we investigate the molecular alterations of a group of cellular myofibroblastic lesions with in the myofibroma and myopericytoma spectrum for better subclassification. Two index cases were studied by paired-end RNA sequencing for potential fusion gene discovery...
May 2017: American Journal of Surgical Pathology
https://www.readbyqxmd.com/read/28219756/atrial-angioleiomyoma-with-myopericytoma-like-features-a-case-report
#6
Hussein Nassereddine, Aurélie Cazes, Constance Verdonk, Benjamin Assous, Raphael Dautry, Patrick Nataf, Michel Wassef, Lydia Deschamps
A 66-year-old female patient was referred to our hospital for resection of a right atrial mass. Four months earlier, she had suffered an acute cerebrovascular accident due to occlusion of the sylvian segment of the right middle cerebral artery from atheromatous tight stenosis in the right internal carotid artery. Later, investigations with transthoracic and transesophageal echocardiography revealed a 3.4-cm right atrial mass that was resected surgically. Microscopic evaluation revealed a well-circumscribed nodular tumor, located within the interatrial septum, and corresponding to an angioleiomyoma (ALM)...
May 2017: Cardiovascular Pathology: the Official Journal of the Society for Cardiovascular Pathology
https://www.readbyqxmd.com/read/28219370/myopericytoma-occurrence-in-the-liver-and-stomach-space-imaging-performance
#7
Zhihua Chen, Wenjie Liang
BACKGROUND: Myopericytoma is a rare and usually benign tumor, which is even rarer if it occurs in the liver and stomach space. Previous reports of myopericytoma were mostly related to its pathological manifestations, while imaging reports were rare. Here, we report the computed tomography (CT), computed tomography angiography (CTA) and magnetic resonance imaging (MRI) performance for one deep myopericytoma. CASE PRESENTATION: In this study, one deep myopericytoma in the liver and stomach space is reported...
February 20, 2017: BMC Cancer
https://www.readbyqxmd.com/read/28214470/myopericytoma-in-urinary-bladder-a-case-report
#8
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/28088345/phenotypic-characterization-of-perivascular-myoid-cell-neoplasms-using-myosin-1b-a-newly-identified-human-pericyte-marker
#9
COMPARATIVE STUDY
Shiori Meguro, Taisuke Akamatsu, Sayomi Matsushima, Isao Kosugi, Hideya Kawasaki, Yoshifumi Arai, Satoshi Baba, Takashi Tsuchida, Yoji Shido, Takafumi Suda, Toshihide Iwashita
Our aims were to identify pericyte-specific markers for the analysis of formalin-fixed, paraffin-embedded human tissue samples, and to characterize perivascular myoid cell neoplasms phenotypically. Previously identified pericyte markers failed to distinguish pericytes from other cellular types, such as vascular smooth muscle cells (vSMCs) and fibroblasts, in immunohistochemistry analysis. However, we compared gene expression profiles between pericytes, vSMCs, and fibroblasts, and performed human skin vasculature immunohistochemistry analysis, which led to the identification of myosin 1B (MYO1B) as a novel pericyte marker...
April 2017: Human Pathology
https://www.readbyqxmd.com/read/27832007/myopericytoma-of-the-internal-auditory-canal
#10
Jacob B Hunter, Brendan P O'Connell, Woon N Chow, Kyle D Weaver, Justin M Cates, George B Wanna
No abstract text is available yet for this article.
November 9, 2016: Otology & Neurotology
https://www.readbyqxmd.com/read/27776010/recurrent-somatic-pdgfrb-mutations-in-sporadic-infantile-solitary-adult-myofibromas-but-not-in-angioleiomyomas-and-myopericytomas
#11
Abbas Agaimy, Matthias Bieg, Michael Michal, Helene Geddert, Bruno Märkl, Jan Seitz, Evgeny A Moskalev, Matthias Schlesner, Markus Metzler, Arndt Hartmann, Stefan Wiemann, Michal Michal, Thomas Mentzel, Florian Haller
Infantile myofibroma (MF) is an uncommon benign myofibroblastic tumor of infancy and childhood. Solitary adult MF shares similar features with infantile MF. The lesions occur in 3 clinicopathologic settings: solitary, multicentric, and generalized and can be either sporadic or familial. Traditionally, infantile MF has been included in the spectrum of infantile hemangiopericytoma. The recent World Health Organization classification listed MF, angioleiomyoma, and myopericytoma under the general heading of perivascular tumors in the sense of a morphologic spectrum of perivascular myoid cell neoplasms...
October 21, 2016: American Journal of Surgical Pathology
https://www.readbyqxmd.com/read/27568674/myopericytoma-a-unifying-term-or-a-unique-entity
#12
Z S Jairajpuri, M J Hasan, G B Madan, S Jetley
Myopericytoma are uncommon, slow-growing benign perivascular neoplasms that show hemangiopericytoma-like vascular pattern. We report a 52-year-male patient with a painless palpable nodule in the left thumb for the past 9 months. The mass, on the thenar aspect, was 15x12mm in size. X-ray revealed a soft tissue swelling with no bony association. The excised nodule was a non-capsulated, well-circumscribed vascular neoplasm composed of proliferating spindle to ovoid bland cells with eosinophilic cytoplasm. A concentric perivascular arrangement of the cells was seen interspersed by thin-walled, branching, staghorn blood vessels...
August 2016: Malaysian Journal of Pathology
https://www.readbyqxmd.com/read/27423414/mirna-expression-profiling-divides-follicular-dendritic-cell-sarcomas-into-two-groups-related-to-fibroblasts-and-myopericytomas-or-castleman-s-disease
#13
Sylvia Hartmann, Claudia Döring, Claudio Agostinelli, Soo-Jeong Portscher-Kim, Silvia Lonardi, Luisa Lorenzi, Fabio Fuligni, Daniel Martinez, Jay Mehta, Anita Borges, Holger Hackstein, Stefan Kippenberger, Pier Paolo Piccaluga, Ingrid Simonitsch-Klupp, José Cabeçadas, Elias Campo, Fabio Facchetti, Stefano A Pileri, Martin-Leo Hansmann
Follicular dendritic cell (FDC) sarcomas are rare mesenchymal tumours, which are fatal in 20% of the patients and usually occur in secondary lymphoid organs or extranodal localizations. Due to the rareness of these tumours, only few studies have been conducted on molecular level. In the present study, we performed microRNA (miRNA) profiling of 31 FDC sarcomas and identified two subgroups, one with high miRNA expression and the other group with low miRNA expression levels. The first group showed a strong similarity to fibroblasts and myopericytomas, whereas the second group was more closely related to FDCs from Castleman's disease...
September 2016: European Journal of Cancer
https://www.readbyqxmd.com/read/27398322/malignant-myopericytoma-of-shoulder-a-rare-lesion
#14
Fariba Binesh, Reza Nafisi Moghadam, Masoud Shabani, Mohammad Reza Mortazavizadeh, Saeedeh Zare
Myopericytoma is a soft tissue tumor with perivascular myoid differentiation. It accounts for 1% of the vascular tumors and involves mostly cutaneous or subcutaneous tissue of the limbs in adults. Malignant myopericytoma is exceedingly rare. A 15-year old girl presented with slowly progressive mass over left shoulder region. Histopathology and immunohistochemistry after complete excision revealed it as malignant myopericytoma.
July 2016: APSP Journal of Case Reports
https://www.readbyqxmd.com/read/27325236/nuclear-%C3%AE-catenin-expression-is-frequent-in-sinonasal-hemangiopericytoma-and-its-mimics
#15
Vickie Y Jo, Christopher D M Fletcher
Sinonasal hemangiopericytoma (HPC) is a tumor showing pericytic myoid differentiation and which arises in the nasal cavity and paranasal sinuses. CTNNB1 mutations appear to be a consistent aberration in sinonasal HPC, and nuclear expression of β-catenin has been reported. Our aim was to evaluate the frequency of β-catenin expression in sinonasal HPC and its histologic mimics in the upper aerodigestive tract. Cases were retrieved from the surgical pathology and consultation files. Immunohistochemical staining for β-catenin was performed on 50 soft tissue tumors arising in the sinonasal tract or oral cavity, and nuclear staining was recorded semiquantitatively by extent and intensity...
June 2017: Head and Neck Pathology
https://www.readbyqxmd.com/read/27124684/incidental-detection-of-subcutaneous-myopericytoma-of-trunk-on-fdg-pet-ct-and-bone-scintigraphy-for-imaging-of-colon-cancer
#16
Selin Soyluoglu Demir, Ali Sarikaya, Gul Ege Aktas, Fulya Oz Puyan
Myopericytoma is a rare type of unusual soft tissue tumor with perivascular myoid differentiation. A 53-year-old man with the diagnosis of colon cancer was referred to Tc-MDP bone scan and F-FDG PET/CT for staging. A subcutaneous mass located in right lower back with heterogeneous FDG uptake was detected on PET/CT. There was increased osteoblastic activity on MDP bone scan in the same region. Mass was resected and subsequently confirmed as myopericytoma by histopathology.
August 2016: Clinical Nuclear Medicine
https://www.readbyqxmd.com/read/27074874/cd34-positive-infantile-myofibromatosis-case-report-and-review-of-hemangiopericytoma-like-pattern-tumors
#17
Takahiro Kiyohara, Naoki Maruta, Shiro Iino, Hideki Ido, Atsushi Tokuriki, Minoru Hasegawa
We describe a case of CD34-positive infantile myofibromatosis with hemangiopericytoma-like pattern. A 2-day-old Japanese boy presented with multiple hemispherical nodules on the extremities and back. There was a biphasic histological growth in the dermis, accompanied by a hemangiopericytoma-like pattern with antler-like branching vessels. Tumor cells were oval to spindle-shaped myoid cells with bland appearance. Immunohistochemically, vimentin, calponin and CD34 were positive, while α-smooth muscle actin, h-caldesmon, HHF35 and desmin were negative...
September 2016: Journal of Dermatology
https://www.readbyqxmd.com/read/27063472/pericytic-mimicry-in-well-differentiated-liposarcoma-atypical-lipomatous-tumor
#18
Jia Shen, Swati Shrestha, P Nagesh Rao, Greg Asatrian, Michelle A Scott, Vi Nguyen, Paulina Giacomelli, Chia Soo, Kang Ting, Fritz C Eilber, Bruno Peault, Sarah M Dry, Aaron W James
Pericytes are modified smooth muscle cells that closely enwrap small blood vessels, regulating and supporting the microvasculature through direct endothelial contact. Pericytes demonstrate a distinct immunohistochemical profile, including expression of smooth muscle actin, CD146, platelet-derived growth factor receptor β, and regulator of G-protein signaling 5. Previously, pericyte-related antigens have been observed to be present among a group of soft tissue tumors with a perivascular growth pattern, including glomus tumor, myopericytoma, and angioleiomyoma...
August 2016: Human Pathology
https://www.readbyqxmd.com/read/27061437/myopericytoma-arising-adjacent-to-the-common-carotid-artery-case-report-and-systematic-review-of-deep-located-neck-myopericytomas
#19
Héctor M Prado-Calleros, David Galarza-Lozano, José R Arrieta-Gómez, Alejandro Pombo-Nava, Sara Parraguirre-Martínez, Carlos Jiménez Gutiérrez
BACKGROUND: Myopericytoma is a perivascular tumor of the skin and subcutaneous tissue of the extremities, it is a rare finding in the head and neck, and even rarer is its deep location. METHODS: A 38-year-old woman presented with a slowly growing mass at the right carotid triangle. Contrast-enhanced CT scan revealed a moderately enhancing mass. At surgery, the tumor was firmly attached to the common carotid artery, making it necessary to excise a small portion of the vessel wall...
September 2016: Head & Neck
https://www.readbyqxmd.com/read/26993809/primary-benign-myopericytoma-of-the-left-atrium
#20
Tomás Francisco Cianciulli, Jorge Alberto Lax, María Cristina Saccheri, Juan Pablo Lestard, Martín Hernán Medawar, Andrea Zappi, Roberto Osvaldo Neme
No abstract text is available yet for this article.
September 2016: Journal of Echocardiography
keyword
keyword
64902
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"