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https://www.readbyqxmd.com/read/28098407/tumefactive-foreign-body-giant-cell-reaction-following-high-pressure-paint-injection-injury-a-case-report-and-review-of-literature
#1
Shakuntala H Mauzo, Michael Swaby, Michael Covinsky
High pressure paint injection injury is an uncommon but well-described injury. The histologic features of long-term paint injection injury with retained material are less recognized. A 46 year old male presented clinically as "recurrent giant cell tumor of tendon sheath". The right index finger demonstrated fusiform enlargement by a pigmented mass with diffuse infiltration into the soft tissue of the hand. Histologically the tumor showed multiple giant cells in a fibrotic stroma extending into the dermis. There were multiple types of foreign material including diffuse brown black pigment, weakly optically polarizing foreign material and white inclusions with a "train track" appearance...
January 18, 2017: Journal of Cutaneous Pathology
https://www.readbyqxmd.com/read/28045748/superficial-acral-fibromyxoma-report-of-13-cases-with-new-immunohistochemical-findings
#2
Daniella Cullen, José Luis Díaz Recuero, Roberto Cullen, José Luis Rodríguez Peralto, Heinz Kutzner, Luis Requena
BACKGROUND: Superficial acral fibromyxoma (SAF) is a benign, soft tissue neoplasm preferably located on the digits. METHODS: We collected 13 cases of SAF and evaluated their clinical, histopathologic, and immunohistochemical features. RESULTS: This study included 9 males and 4 females, median age 54 years. The patients presented with a solitary asymptomatic or tender mass, most of them arising on fingers or toes. Histopathologically all lesions consisted of nonencapsulated dermal nodules, composed of spindled cells with variable myxoid and/or fibrotic stroma...
January 2017: American Journal of Dermatopathology
https://www.readbyqxmd.com/read/28040849/rejection-versus-escape-the-tumor-mhc-dilemma
#3
REVIEW
Federico Garrido, Francisco Ruiz-Cabello, Natalia Aptsiauri
Most tumor cells derive from MHC-I-positive normal counterparts and remain positive at early stages of tumor development. T lymphocytes can infiltrate tumor tissue, recognize and destroy MHC class I (MHC-I)-positive cancer cells ("permissive" phase I). Later, MHC-I-negative tumor cell variants resistant to T-cell killing emerge. During this process, tumors first acquire a heterogeneous MHC-I expression pattern and finally become uniformly MHC-I-negative. This stage (phase II) represents a "non-permissive" encapsulated structure with tumor nodes surrounded by fibrous tissue containing different elements including leukocytes, macrophages, fibroblasts, etc...
December 31, 2016: Cancer Immunology, Immunotherapy: CII
https://www.readbyqxmd.com/read/28036169/low-initial-modulus-biodegradable-polyurethane-elastomers-for-soft-tissue-regeneration
#4
Cancan Xu, Yihui Huang, Liping Tang, Yi Hong
The mechanical match between synthetic scaffold and host tissue remains challenging in tissue regeneration. The elastic soft tissues exhibit low initial moduli with a J-shaped tensile curve. The suitable synthetic polymer scaffolds requires low initial modulus and elasticity. To achieve these requirements, random copolymers poly(δ-valerolactone-co-ε-caprolactone) (PVCL) and hydrophilic poly(ethylene glycol) (PEG) were combined into a triblock copolymer PVCL-PEG-PVCL, which was used as a soft segment to synthesize a family of biodegradable elastomeric polyurethanes with low initial moduli...
December 30, 2016: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28029320/pulmonary-infiltrates-in-a-patient-with-advanced-melanoma
#5
Charles A Powell
The Oncology Grand Rounds series is designed to place original reports published in the Journal into clinical context. A case presentation is followed by a description of diagnostic and management challenges, a review of the relevant literature, and a summary of the authors' suggested management approaches. The goal of this series is to help readers better understand how to apply the results of key studies, including those published in Journal of Clinical Oncology, to patients seen in their own clinical practice...
December 28, 2016: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
https://www.readbyqxmd.com/read/28027747/imaging-findings-of-kaposiform-hemangioendothelioma-in-children
#6
Young Jin Ryu, Young Hun Choi, Jung-Eun Cheon, Woo Sun Kim, In-One Kim, Ji Eun Park, Yu Jin Kim
PURPOSE: Kaposiform hemangioendothelioma (KHE) is a rare, aggressive vascular tumor that typically occurs during infancy or early childhood. Though several case reports have discussed the imaging findings of KHE, larger comprehensive studies are lacking. The purpose of this study was to evaluate the imaging findings of KHE in children. MATERIALS AND METHODS: A total of twelve cases of pathologically proven KHE were collected by searching our institution's pathology database for children diagnosed between January 2004 and April 2016 (6 male, 6 female; median age: 3 months; age range 7days - 18 years)...
January 2017: European Journal of Radiology
https://www.readbyqxmd.com/read/28027743/igg4-related-cardiovascular-disease-the-emerging-role-of-cardiovascular-imaging
#7
REVIEW
Sophie Mavrogeni, George Markousis-Mavrogenis, Genovefa Kolovou
Immunoglobulin 4-related disease (IgG4-related disease) is a systemic inflammatory disease that presents with increases of serum IgG4. It may affect various systems, including the cardiovascular (CV) system. Assessment of serum IgG4 levels and involved organ biopsy are necessary for diagnosis. IgG4-related disease is characterized by fibrosclerosis, lymphocytic infiltration and presence of IgG4-positive plasma cells. The disease usually responds to treatment with corticosteroids and/or immunosuppressive medication...
January 2017: European Journal of Radiology
https://www.readbyqxmd.com/read/28026970/engineering-3d-bioplotted-scaffolds-to-induce-aligned-extracellular-matrix-deposition-for-musculoskeletal-soft-tissue-replacement
#8
Paul B Warren, Pedro Huebner, Jeffrey T Spang, Rohan A Shirwaiker, Matthew B Fisher
PURPOSE: Tissue engineering and regenerative medicine approaches have the potential to overcome the challenges associated with current treatment strategies for meniscus injuries. 3D-Bioplotted scaffolds are promising, but have not demonstrated the ability to guide the formation of aligned collagenous matrix in vivo, which is critical for generating functional meniscus tissue. In this study, we evaluate the ability of 3D-Bioplotted scaffold designs with varying interstrand spacing to induce the deposition of aligned matrix in vivo...
December 27, 2016: Connective Tissue Research
https://www.readbyqxmd.com/read/28012598/mechanisms-underpinning-protection-against-eccentric-exercise-induced-muscle-damage-by-ischemic-preconditioning
#9
Alexander Franz, Michael Behringer, Kazunori Nosaka, Bettina Alexandra Buhren, Holger Schrumpf, Constantin Mayer, Christoph Zilkens, Moritz Schumann
Eccentric exercise training is effective for increasing muscle mass and strength, and improving insulin sensitivity and blood lipid profiles. However, potential muscle damage symptoms such as prolonged loss of muscle function and delayed onset of muscle soreness may restrict the use of eccentric exercise, especially in clinical populations. Therefore, strategies to reduce eccentric exercise-induced muscle damage (EIMD) are necessary, and an extensive number of scientific studies have tried to identify potential intervention modalities to perform eccentric exercises without adverse effects...
January 2017: Medical Hypotheses
https://www.readbyqxmd.com/read/28011890/idiopathic-myelofibrosis-with-disseminated-hepatosplenic-mesenteric-renal-and-pulmonary-extramedullary-haematopoeisis-portal-hypertension-and-tuberculosis-initial-presentation-and-2%C3%A2-years-follow-up
#10
Ananya Panda, Sheragaru Hanumanthappa Chandrashekhara, Aruna Nambirajan, Pravas Mishra
A 35-year-old man with a 12-year history of idiopathic myelofibrosis (IMF) presented in 2014 with fatigue and abdominal distension. CT scan revealed massive hepatosplenomegaly with focal splenic lesions, soft tissue around renal pelvis, mesenteric masses compressing bowel loops and perilymphatic nodules in lungs. There was portal hypertension, ascites, pleural effusion, bilateral psoas abscesses and necrotic retroperitoneal lymphadenopathy. MRI additionally revealed hypointense periportal infiltrative lesions in liver, not seen on CT scan...
December 23, 2016: BMJ Case Reports
https://www.readbyqxmd.com/read/28005823/diode-laser-clinical-efficacy-and-mini-invasivity-in-surgical-exposure-of-impacted-teeth
#11
Mario Migliario, Manuela Rizzi, Alberta Greco Lucchina, Filippo Renò
The gold standard to arrange impacted teeth in the dental arch is represented by a surgical approach followed by orthodontic traction force application. In the literature, many surgical approaches are proposed to reach such a scope. The aim of the present study is to demonstrate how laser technique could positively assist surgical approaches.Study population was composed by 16 patients undergoing orthodontic treatment of 20 impacted teeth. In 10 patients (population A) surgical exposure of the impacted teeth was performed using a 980 nm diode laser, while in the other 10 patients (population B), surgical incision was performed using a traditional lancet...
November 2016: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28005492/feline-injection-site-sarcoma
#12
I Porcellato, L Menchetti, C Brachelente, M Sforna, A Reginato, E Lepri, L Mechelli
Feline injection-site sarcoma (FISS) is an aggressive tumor believed to arise from the proliferation of fibroblasts and myofibroblasts in areas of chronic inflammation, particularly at sites of injection. Local recurrence is frequent after surgical excision. Gelatinases (MMP-2 and MMP-9) and their inhibitor (TIMP-2) are endopeptidases pivotal in extracellular matrix remodeling and therefore in tumor invasiveness. The aim of this study was to investigate the immunohistochemical expression of MMP-2, MMP-9, and TIMP-2 in FISS to assess their usefulness as prognostic factors...
January 1, 2016: Veterinary Pathology
https://www.readbyqxmd.com/read/28004137/abdominal-wall-endometriosis-differentiation-from-other-masses-using-ct-features
#13
Gail Yarmish, Evis Sala, Debra A Goldman, Yulia Lakhman, Robert A Soslow, Hedvig Hricak, Ginger J Gardner, H Alberto Vargas
PURPOSE: To assess the utility of morphologic and quantitative CT features in differentiating abdominal wall endometriosis (AWE) from other masses of the abdominal wall. METHODS: Retrospective IRB-approved study of 105 consecutive women from two institutions who underwent CT and biopsy/resection of abdominal wall masses. CTs were independently reviewed by two radiologists blinded to final histopathologic diagnoses. Associations between CT features and pathology were tested using Fisher's Exact Test...
December 21, 2016: Abdominal Radiology
https://www.readbyqxmd.com/read/27994926/intraarticular-giant-size-angiolipoma-of-the-knee-causing-lateral-patellar-dislocation
#14
Gökhan İlyas, Ali Turgut, Duygu Ayaz, Önder Kalenderer
BACKGROUND: Angiolipomas are benign tumors usually seen in patients during their 2(nd) and 3(rd) decades. The subcutaneous region of the trunk, neck and extremities are the places where they generally settle. There is only one case report on angiolipoma in the knee joint that was resected by arthroscopic procedure in the English literature. CASE REPORT: We present a case of a giant-size multilobular non-infiltrating angiolipoma, extending outside of the right knee joint and causing lateral patellar dislocation in a thirteen-year-old boy...
November 2016: Balkan Medical Journal
https://www.readbyqxmd.com/read/27956588/modeling-synovial-sarcoma-metastasis-in-the-mouse-pi3-lipid-signaling-and-inflammation
#15
Jared J Barrott, Lisa A Kafchinski, Huifeng Jin, Jared W Potter, Sarmishta D Kannan, Robert Kennedy, Tim Mosbruger, Wei-Lien Wang, Jen-Wei Tsai, Dejka M Araujo, Ting Liu, Mario R Capecchi, Alexander J Lazar, Kevin B Jones
Solid tumor metastasis is a complex biology, impinged upon by a variety of dysregulated signaling pathways. PI3'-lipid signaling has been associated with metastasis and inflammation in many cancers, but the relationship between tumor cell-intrinsic PI3'-lipid signaling and inflammatory cell recruitment has remained enigmatic. Elevated PI3'-lipid signaling associates with progression of synovial sarcoma, a deadly soft tissue malignancy initiated by a t(X;18) chromosomal translocation that generates an SS18-SSX fusion oncoprotein...
December 12, 2016: Journal of Experimental Medicine
https://www.readbyqxmd.com/read/27942382/a-case-report-giant-intra-abdominal-liposarcoma-presenting-acute-renal-failure
#16
Kazim Duman, Mustafa Girgin, Gokhan Artas
INTRODUCTION: Liposarcomas represent 20-30% of adult soft tissue tumors and its abdominal localization occurs only in 5% of cases. Most are asymptomatic, but few present with abdominal mass and pain, fatigue, nausea, vomiting. They infiltrate adjacent organs and cause intestinal obstruction, intestinal ischemia-perforation, hydronephrosis, ureteric fistula and even aortic rupture. Here we aimed to report a rare case of a giant liposarcoma which originated from mesentery. PRESENTATION OF CASE: A 45-year-old male presented with slightly abdomen distention, urinary retention, oliguria since fifteen days...
December 2016: Annals of Medicine and Surgery
https://www.readbyqxmd.com/read/27940389/silk-based-bioinks-for-soft-tissue-reconstruction-using-3-dimensional-3d-printing-with-in%C3%A2-vitro-and-in%C3%A2-vivo-assessments
#17
María J Rodriguez, Joseph Brown, Jodie Giordano, Samuel J Lin, Fiorenzo G Omenetto, David L Kaplan
In the field of soft tissue reconstruction, custom implants could address the need for materials that can fill complex geometries. Our aim was to develop a material system with optimal rheology for material extrusion, that can be processed in physiological and non-toxic conditions and provide structural support for soft tissue reconstruction. To meet this need we developed silk based bioinks using gelatin as a bulking agent and glycerol as a non-toxic additive to induce physical crosslinking. We developed these inks optimizing printing efficacy and resolution for patient-specific geometries that can be used for soft tissue reconstruction...
February 2017: Biomaterials
https://www.readbyqxmd.com/read/27920876/bilateral-perirenal-space-fibromatosis-with-renal-infiltration-case-report-and-review-of-literature
#18
Avinash Sabale, Anil Pralhadan, Kalirajan Kalidos, Krishnankutty Ramachandran
Fibromatosis and/or desmoid tumors which constitute less than 1% of all neoplasms and 3.0% of all soft-tissue tumors are pathologically benign proliferations of the fibroblasts but are locally aggressive with infiltrative type of growth and tendency toward recurrence. Bilateral symmetrical perirenal involvement has been described in many conditions which can be renal, subcapsular, or perirenal in origin. However, bilateral perirenal fibromatosis as an isolated presentation was very uncommon. We report an exceptionally rare case of bilateral perirenal fibromatosis with renal infiltration...
December 2016: Radiology case reports
https://www.readbyqxmd.com/read/27914772/vascular-reconstruction-after-retroperitoneal-and-lower-extremity-sarcoma-resection
#19
M Wortmann, I Alldinger, D Böckler, A Ulrich, A Hyhlik-Dürr
PURPOSE: Soft tissue sarcomas (STS) of the retroperitoneum and the lower limb with invasion of major blood vessels are very rare malignancies. This study analyses the outcome of patients with vascular replacement during resection of STS of the retroperitoneum and the lower extremity with either arterial or concomitant arterial and venous infiltration. METHODS: Patients with vascular replacement during resection of sarcoma of the retroperitoneum and the lower extremity between 1990 and 2014 were included in this retrospective single center study...
November 20, 2016: European Journal of Surgical Oncology
https://www.readbyqxmd.com/read/27910815/in-vitro-and-in-vivo-evaluations-of-a-novel-post-electrospinning-treatment-to-improve-the-fibrous-structure-of-chitosan-membranes-for-guided-bone-regeneration
#20
Hengjie Su, Kwei-Yu Liu, Anastasios Karydis, Daniel G Abebe, Chaoxi Wu, Kenneth M Anderson, Najib Ghadri, Pradeep Adatrow, Tomoko Fujiwara, Joel D Bumgardner
Electrospun chitosan membranes have been investigated for guided bone regeneration but are susceptible to swelling, dissolution, and loss of biomimetic nanofiber structure due to residual acid salts. A novel process was investigated for acidic salt removal from chitosan electrospun in 70% trifluoroacetic acid (TFA) by treating with triethylamine (TEA)/acetone and di-tert-butyl dicarbonate (tBOC) instead of the common Na2CO3 treatment. TFA salt removal and nanofiber structure stabilization were confirmed by EDS, FTIR, (19)F NMR and electron microscopy before and after soaking in water...
December 2, 2016: Biomedical Materials
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