scholarly journals A case of pigmented nevi with large mass in maxillary and mandibular gingiva

2020 ◽  
Vol 32 (3) ◽  
pp. 71-76
Author(s):  
Katsuhisa Matsuo ◽  
Shougo Kikuta ◽  
Katsumi Shinozaki ◽  
Yuushi Abe ◽  
Jingo Kusukawa
Keyword(s):  
Large Mass ◽  
Pigmented Nevi

Open discussion

1982 ◽  
Vol 99 ◽  
pp. 605-613
Author(s):  
P. S. Conti
Keyword(s):  
Buenos Aires ◽  
Large Mass ◽  
List Type ◽  
Common Phenomenon ◽  
Open Discussion ◽  
The Stability ◽  
Ring Nebulae

Conti: One of the main conclusions of the Wolf-Rayet symposium in Buenos Aires was that Wolf-Rayet stars are evolutionary products of massive objects. Some questions:–Do hot helium-rich stars, that are not Wolf-Rayet stars, exist?–What about the stability of helium rich stars of large mass? We know a helium rich star of ∼40 MO. Has the stability something to do with the wind?–Ring nebulae and bubbles : this seems to be a much more common phenomenon than we thought of some years age.–What is the origin of the subtypes? This is important to find a possible matching of scenarios to subtypes.

A 13,000 YEAR MULTI-PROXY CLIMATE RECORD FROM THE FISH LAKE PLATEAU OF UTAH WITH EMPHASIS ON THE CONDITIONS LEADING TO LARGE MASS MOVEMENTS

2016 ◽  
Author(s):  
Stephen T. Nelson ◽  
◽  
Kevin A. Rey ◽  
David G. Tingey ◽  
John H. McBride ◽  
...  
Keyword(s):  
Large Mass ◽  
Mass Movements ◽  
Climate Record

scholarly journals Intrascrotal lipoblastoma in adulthood

2019 ◽  
Vol 12 (12) ◽  
pp. e231320
Author(s):  
Mário José Pereira-Lourenço ◽  
Duarte Vieira-Brito ◽  
João Pedro Peralta ◽  
Noémia Castelo-Branco
Keyword(s):  
Case Report ◽  
Magnetic Resonance ◽  
S100 Protein ◽  
Surgical Excision ◽  
Large Mass ◽  
Histological Diagnosis ◽  
Physical Exam ◽  
Nodular Lesion ◽  
Inferior Portion ◽  
The Right

This case report describes the case of a 37-year-old man that noticed an intrascrotal right mass with 1 month of evolution. During physical exam presented with a large mass at the inferior portion of the right testicle, clearly separated from the testicle, with a tender consistency and mobile. An ultrasound was performed that showed a solid and subcutaneous nodular lesion, extra testicular, heterogeneous, measuring 7.2 cm. Pelvic magnetic resonance imageMRI showed a lesion compatible with a lipoma. The patient was subjected to surgical excision of the lesion by scrotal access, having histology revealed a lipoblastoma (LB) of the scrotum. Histological diagnosis was obtained by microscopic characteristics (well-circumscribed fatty neoplasm) and immunohistochemistry (stains for CD34, S100 protein and PLAG1 were positive; stains for MDM2 and CDK4 were negative). LB is extremely rare after adolescence in any location, being this first described case of intrascrotal LB described in adulthood.

Numerical and Experimental Research on the Fluid-Induced Forces of Clearance Flow in Canned Motor Reactor Coolant Pump

2019 ◽  
Vol 141 (6) ◽  
Author(s):  
Rui Xu ◽  
Yun Long ◽  
Yaoyu Hu ◽  
Junlian Yin ◽  
Dezhong Wang
Keyword(s):  
Large Mass ◽  
Stiffness Coefficient ◽  
Pressurized Water ◽  
Coolant Pump ◽  
Reactor Coolant ◽  
Various Boundary Conditions ◽  
Clearance Flow ◽  
Mass Coefficient ◽  
Cfd Method ◽  
Canned Motor

Reactor coolant pump (RCP) is one of the most important equipment of the coolant loop in a pressurized water reactor system. Its safety relies on the characteristics of the rotordynamic system. For a canned motor RCP, the liquid coolant fills up the clearance between the metal shields of the rotor and stator inside the canned motor, forming a long clearance flow. The fluid-induced forces of the clearance flow in canned motor RCP and their effects on the rotordynamic characteristics of the pump are numerically and experimentally analyzed in this work. A transient computational fluid dynamics (CFD) method has been used to investigate the fluid-induced force of the clearance. A vertical experiment rig has also been established for the purpose of measuring the fluid-induced forces. Fluid-induced forces of clearance flow with various whirl frequencies and various boundary conditions are obtained through the CFD method and the experiment. Results show that clearance flow brings large mass coefficient into the rotordynamic system and the direct stiffness coefficient is negative under the normal operating condition. The rotordynamic stability of canned motor RCP does not deteriorate despite the existence of significant cross-coupled stiffness coefficient from the fluid-induced forces of the clearance flow.

Photoisomerization-induced patterning of ion-pairing materials based on anionic azobenzene and its complex with a fluorescent π-electronic system

2021 ◽  
Vol 57 (35) ◽  
pp. 4287-4290
Author(s):  
Ryohei Yamakado ◽  
Issei Kitamura ◽  
Mitsuo Hara ◽  
Shusaku Nagano ◽  
Takahiro Seki ◽  
...  
Keyword(s):  
Surface Tension ◽  
Mass Transport ◽  
Trace Amount ◽  
Ion Pairs ◽  
Ion Pairing ◽  
Electronic System ◽  
Large Mass ◽  
System P ◽  
The Difference

Large mass transport driven by the difference in the photoisomerization-induced surface tension was demonstrated in ion pairs, enabling fluorescence patterning using a trace amount of photoisomerized anions in complexation with a π-electronic system.

scholarly journals Resection of primary cardiac angiosarcoma infiltrating the right atrioventricular junction and tricuspid valve: a case report

2021 ◽  
Vol 16 (1) ◽  
Author(s):  
Lubna Bakr ◽  
Hussam AlKhalaf ◽  
Ahmad Takriti
Keyword(s):  
Surgical Resection ◽  
Tricuspid Valve ◽  
Right Atrium ◽  
Large Mass ◽  
Small Mass ◽  
Malignant Tumours ◽  
Atrioventricular Junction ◽  
Cardiac Angiosarcoma ◽  
Complete Surgical Resection ◽  
The Right

Abstract Background Primary cardiac tumours are extremely rare. Most of them are benign. Sarcomas account for 95% of the malignant tumours. Prognosis of primary cardiac angiosarcoma remains poor. Complete surgical resection is oftentimes hampered when there is extensive tumour involvement into important cardiac apparatus. We report a case of cardiac angiosarcoma of the right atrium and ventricle, infiltrating the right atrioventricular junction and tricuspid valve. Case presentation Initially, a 22-year-old man presented with dyspnoea. One year later, he had recurrent pericardial effusion. Afterwards, echocardiography revealed a large mass in the right atrium, expanding from the roof of the right atrium to the tricuspid valve. The mass was causing compression on the tricuspid valve, and another mass was seen in the right ventricle. Complete resection of the tumour was impossible. The mass was resected with the biggest possible margins. The right atrium was reconstructed using heterologous pericardium. The patient’s postoperative course was uneventful. Postoperative echocardiography showed a small mass remaining in the right side of the heart. Histopathology and immunohistochemistry confirmed the diagnosis of angiosarcoma. The patient underwent adjuvant chemotherapy and radiotherapy later on. He survived for 1 year and 5 days after the surgery. After a diagnosis of lung and brain metastases, he ended up on mechanical ventilation for 48 h and died. Conclusions Surgical resection combined with postoperative chemotherapy and radiotherapy is feasible even in patients with an advanced stage of cardiac angiosarcoma when it is impossible to perform complete surgical resection.

scholarly journals Colonoscopic Instillation of Coca-Cola for Evacuation of Large Fecaloma: A Report of Two Cases and Review of Literature

2021 ◽  
Author(s):  
Avnish Kumar Seth ◽  
Mahesh Kumar Gupta ◽  
Rinkesh Kumar Bansal ◽  
Radha Krishan Verma ◽  
Gursimran Kaur
Keyword(s):  
Sigmoid Colon ◽  
Pelvic Mass ◽  
Large Mass ◽  
Review Of Literature ◽  
Lower Abdomen ◽  
Fecal Matter ◽  
Rectal Examination ◽  
Descending Colon ◽  
Phosphate Enema ◽  
Conventional Methods

Abstract Introduction Fecaloma is a large mass of organized hardened feces causing impaction, usually in rectum and sigmoid colon. Medical management usually entails digital evacuation, use of clearance enema, and oral laxatives. We report two patients managed successfully with colonoscopic instillation of Coca-Cola and review the literature. Case Report Patient 1: A 37-year-old male presented with firm, nontender, pitting mass over lower abdomen for 2 months and inability to pass stool for 1 month. Per-rectal examination and imaging confirmed presence of solid stool with gross distension of rectum and sigmoid colon. Attempts at clearance of stool with conventional methods were unsuccessful. At colonoscopy, 4 L of Coca-Cola was instilled into descending and sigmoid colon, leading to evacuation of 10 L of fragmented and liquid stool.Patient 2: A 72-year-old diabetic lady presented with constipation and tender, firm pelvic mass extending till mid-abdomen for 6 months. Per-rectal examination revealed presence of hard stool. Imaging confirmed large amount of fecal matter in dilated rectum, sigmoid, and descending colon. Attempts at evacuating stool with digital evacuation, sodium phosphate enema, and oral polyethylene glycol were unsuccessful. At colonoscopy, two sittings of instillation of 990 mL of Coca-Cola Light each were done into sigmoid colon over 2 days, resulting in clearance. Conclusion Colonoscopic instillation of Coca-Cola may be effective in evacuation of large fecaloma from rectum, sigmoid, and descending colon when refractory to use of conventional methods like digital disimpaction, rectal enema, and oral laxatives.

scholarly journals Large Right Atrial Myxoma Masquerading as Malignancy

2021 ◽  
Author(s):  
Bharath V. ◽  
Milind Padmakar Hote
Keyword(s):  
Right Heart Failure ◽  
Large Mass ◽  
Atrial Myxoma ◽  
Right Atrial ◽  
Free Wall ◽  
Right Heart ◽  
Rare Presentation ◽  
Right Atrial Myxoma ◽  
Hard Consistency ◽  
Stony Hard

AbstractA 57-year-old female presented to emergency with features of right heart failure. On evaluation, she was found to have a large mass occupying right atrium (RA) completely and protruding into right ventricle through tricuspid valve. Intraoperatively, mass was seen arising from RA free wall with stony hard consistency. Histopathology revealed it to be myxoma. We present this case for the rare presentation of myxoma masquerading as malignancy.

scholarly journals Large cervical fibroid: a rare case report

2019 ◽  
Vol 8 (8) ◽  
pp. 3414
Author(s):  
Sunanda N.
Keyword(s):  
Uterine Fibroids ◽  
Total Abdominal Hysterectomy ◽  
Large Mass ◽  
Abdominal Hysterectomy ◽  
Reproductive Age ◽  
Pelvic Tumors ◽  
Rare Case Report ◽  
Tender Mass ◽  
Restricted Mobility ◽  
Reproductive Age Group

Although leiomyomas are the most common pelvic tumors presenting in the reproductive age group, cervical fibroids are rare accounting for 2% of all uterine fibroids. We report a case of 40 year old lady presenting with a firm, non-tender mass of 22-24 weeks size pregnant uterus with restricted mobility. Laparotomy showed a large mass arising from the anterior lip of cervix, with a small uterus pushed posteriorly. Enucleation followed by total abdominal hysterectomy was done. Large cervical fibroids are rare, presenting with surgical difficulties. Careful dissection by expert hands is needed in the management of such cases. 

scholarly journals Probing within the bondi radius of the ultramassive black hole in NGC 1600

2021 ◽  
Author(s):  
J Runge ◽  
S A Walker
Keyword(s):  
Black Hole ◽  
Accretion Rate ◽  
Statistical Significance ◽  
Large Mass ◽  
Nearby Galaxy ◽  
Density Profiles ◽  
Spatially Resolved ◽  
Single Temperature ◽  
Slight Rise ◽  
Two Temperature

Abstract We present deep (250 ks) Chandra observations of the nearby galaxy group NGC 1600, which has at its centre an ultramassive black hole (17±1.5 billion M⊙). The exceptionally large mass of the black hole coupled with its low redshift makes it one of only a handful of black holes for which spatially resolved temperature and density profiles can be obtained within the Bondi radius with the high spatial resolution of Chandra. We analyzed the hot gas properties within the Bondi accretion radius R$_\rm {B}=1{_{.}^{\prime\prime}} 2 - 1{_{.}^{\prime\prime}} 7= 0.38 - 0.54~\rm {kpc}$. Within a ∼3 kpc radius, we find two temperature components with statistical significance. Both the single temperature and two temperature models show only a very slight rise in temperature towards the centre, and are consistent with being flat. This is in contrast with the expectation from Bondi accretion for a temperature profile which increases towards the centre, and appears to indicate that the dynamics of the gas are not being determined by the central black hole. The density profile follows a relatively shallow ρ∝ r−[0.61 ± 0.13] relationship within the Bondi radius, which suggests that the true accretion rate on to the black hole may be lower than the classical Bondi accretion rate.

Sign in / Sign up

Export Citation Format

Share Document