Pressure, temperature, and composition history of syntectonic fluids in a low-grade metamorphic terrane

Geology ◽  
2005 ◽  
Vol 33 (5) ◽  
pp. 421 ◽  
Author(s):  
Arthur Goldstein ◽  
Bruce Selleck ◽  
John W. Valley
Keyword(s):  
Low Grade ◽  
History Of ◽  
Metamorphic Terrane ◽  
Composition History

Primary acquired melanosis (PAM) without atypia/WHO low-grade conjunctival melanocytic intraepithelial lesion over areas of oculodermal melanocytosis

2020 ◽  
Vol 13 (10) ◽  
pp. e236741
Author(s):  
Bashar M Bata ◽  
Sachin M Salvi ◽  
Hardeep Singh Mudhar
Keyword(s):  
Bulbar Conjunctiva ◽  
Low Grade ◽  
Primary Acquired Melanosis ◽  
Conjunctival Biopsy ◽  
History Of ◽  
Intraepithelial Lesion ◽  
The Relationship ◽  
Oculodermal Melanocytosis ◽  
Substantia Propria ◽  
New Onset

An elderly white man with a history of left oculodermal melanocytosis presented with new onset brown pigmentation of the left bulbar and inferior tarsal conjunctiva. The bulbar conjunctival pigmentation was at the level of the conjunctival epithelium and was overlying areas of typical slate-grey scleral pigmentation characteristic of oculodermal melanocytosis. Both areas of new pigmentation were biopsied. The bulbar conjunctiva revealed primary acquired melanosis (PAM) without atypia with increased melanin production and the tarsal conjunctival biopsy showed PAM without atypia sine pigmentio overlying areas of substantia propria spindle-shaped heavily pigmented melanocytes of oculodermal melanocytosis. The case report examines the relationship between the epithelial and substantia propria melanocytes and correlates the findings with what is known about this association from the dermatopathology literature.

Solitary Paraganglioma of the Hypoglossal Nerve: Case Report

Neurosurgery ◽  
2011 ◽  
Vol 68 (4) ◽  
pp. E1170-E1174 ◽  
Author(s):  
Kazim Raza ◽  
Chandrasekaran Kaliaperumal ◽  
Michael Farrell ◽  
John A. O'Dwyer ◽  
Christopher Pidgeon
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Hypoglossal Nerve ◽  
Jugular Foramen ◽  
Low Grade ◽  
Resonance Imaging ◽  
Stereotactic Radiation ◽  
Hypoglossal Canal ◽  
Suboccipital Craniotomy ◽  
History Of

Abstract BACKGROUND AND IMPORTANCE: We report the case history of solitary hypoglossal paraganglioma in a 64-year-old woman. The surgical difficulties encountered in the removal of this challenging tumor are discussed and as a literature review provided. CLINICAL PRESENTATION: A 64-year-old woman presented with a short history of dysphonia, occasional dysphagia, tinnitus, altered taste, and unilateral left-sided tongue wasting. On examination, there was left lower motor hypoglossal paralysis. Imaging showed a discrete enhancing lobulated mass, measuring 2 × 2 cm, in the region of the hypoglossal nerve extending into the hypoglossal canal suggestive of hypoglossal paraganglioma. A left dorsolateral suboccipital craniotomy was performed with the patient in the sitting position. The hypoglossal nerve appeared to be enlarged, and the jugular foramen was normal. Complete surgical debulking of the tumor was not attempted because of its vascular nature. The nerve was decompressed, and neuropathology confirmed a low-grade paraganglioma arising from the hypoglossal nerve. The patient was scheduled to receive stereotactic radiation for further management. CONCLUSION: When a case of solitary hypoglossal paraganglioma is encountered in clinical practice, the aim of management should be mainly focused on achieving a diagnosis and preserving the hypoglossal nerve function. If there is evidence of vascularity in the lesion noted on magnetic resonance imaging, a preoperative angiogram should be obtained with a view for embolization. We decompressed the hypoglossal canal and achieved good improvement in the patient's symptoms. We recommend stereotactic radiosurgery for remnant and small hypoglossal tumors and regular follow-up with magnetic resonance imaging scans.

scholarly journals Atypical Presentation of Atypical Teratoid Rhabdoid Tumor in a Child

2013 ◽  
Vol 2013 ◽  
pp. 1-4 ◽  
Author(s):  
Y. T. Udaka ◽  
K. Shayan ◽  
N. A. Chuang ◽  
J. R. Crawford
Keyword(s):  
Rhabdoid Tumor ◽  
Low Grade Glioma ◽  
Low Grade ◽  
Atypical Presentation ◽  
Atypical Teratoid Rhabdoid Tumor ◽  
Resonance Imaging ◽  
Atypical Teratoid ◽  
History Of ◽  
Progressive Weight Loss ◽  
Intracranial Neoplasm

Atypical Teratoid Rhabdoid Tumor (ATRT) is a rare malignant intracranial neoplasm more commonly diagnosed in young children. The authors report the case of an 11-year-old boy with a long standing history of slowly progressive weight loss, fatigue, and weakness over 1.5 years whose magnetic resonance imaging revealed a large heterogeneous enhancing dorsally exophytic lower brainstem mass. Examination revealed extreme cachexia, gaze-evoked nystagmus, dysphagia, dysarthria, bilateral dysmetria, and global weakness without ambulation. The protracted history and neuroimaging features were most suggestive of a low grade glioma. However, pathology revealed a hypercellular tumor with large hyperchromatic nucleoli and loss of INI-1 staining on immunohistochemistry consistent with a diagnosis of an ATRT. The child died shortly after surgery due to complications from his brainstem infiltrative disease. This case illustrates the diverse presentation of ATRT in childhood that can clinically and radiographically mimic that of low grade glioma.

Dynamic history of low-grade gliomas before and after temozolomide treatment

2007 ◽  
Vol 61 (5) ◽  
pp. 484-490 ◽  
Author(s):  
Damien Ricard ◽  
Gentian Kaloshi ◽  
Alexandra Amiel-Benouaich ◽  
Julie Lejeune ◽  
Yannick Marie ◽  
...  
Keyword(s):  
Low Grade ◽  
Low Grade Gliomas ◽  
Before And After ◽  
History Of

scholarly journals P045 Nothing is too 'cagey' for the rheumatologist

Rheumatology ◽  
2021 ◽  
Vol 60 (Supplement_1) ◽  
Author(s):  
Muhammad F Kazmi
Keyword(s):  
Weight Loss ◽  
Inflammatory Markers ◽  
Low Grade ◽  
Careful Monitoring ◽  
Chronic Infections ◽  
Asian Origin ◽  
Travel History ◽  
Chest Clinic ◽  
History Of ◽  
Inflammatory Changes

Abstract Background/Aims  Rheumatological conditions can present with a number of non-specific features like arthralgia, fever, fatigue, weight loss along with raised inflammatory markers and positive antibodies. Due to this, when similar symptoms are referred for input it is very important to consider other ‘mimics’. We report a case of Pigeon fancier’s lung presenting with these symptoms which was referred as likely connective tissue disease. Methods  A 52-year-old lady of South Asian origin was referred by her GP with six month history of 3kg weight loss, arthralgia, fatigue, low grade fever and persistently raised inflammatory markers (ESR ranging from 50-64 mm/hr, CRP 10-14 mg/L, normal BMI). On further questioning there was history of mouth ulcers, non-specific rash, occasional cough but no Raynaud’s or joint swelling. Blood investigations showed weakly positive ANA and RF but negative ENA, DNA, antiCCP , CK, C3,C4. C-ANCA was positive but PR3 negative. CXR was clear and tests for chronic infections including TB were negative. Due to lack of objective CTD signs, plan was to take a careful monitoring approach to see if clinical features evolved. A month later due to worsening cough, a CT chest/abdomen arranged by GP showed ground-glass changes consistent with pneumonitis and hence her rheumatology appointment was expedited to see if there was an autoimmune unifying diagnosis. She was also referred by her GP to the chest clinic in view of CT report and mild shortness of breath. Results  On further review, again there were no objective CTD signs. On direct questioning there was history of travelling before worsening chest symptoms to South Asia. Also around a year before her symptoms started she was given an African grey parrot. Based on this, serology for Avian precipitin was checked which showed strongly positive IgG antibodies to avian antigens (Budgerigar droppings and feathers, Pigeon feathers IgG Abs) confirming the diagnosis of pigeon fanciers lung. She fulfilled the diagnostic criteria and was asked to avoid the trigger. Urgent respiratory input was arranged where diagnosis was agreed with and disease was deemed sub-acute in presentation. Due to PFTs showing low transfer factor of 38%, Prednisolone was started with significant improvement within few days. Review of CT chest only showed inflammatory changes and no established fibrosis predicting excellent prognosis as delay in treatment can cause irreversible pulmonary fibrosis. Conclusion  A number of conditions can mimic rheumatological conditions which usually turn out to be either infectious or malignant in origin. This case highlights the importance of considering other differentials and along with taking a travel history also asking for other possible triggers like pets. In similar scenarios the diagnosis may be ‘cagey’ but as rheumatologists we are expected to answers questions which others can’t. Disclosure  M.F. Kazmi: None.

Low-Grade Mucosa-Associated Lymphoid Tissue Lymphoma Involving the Kidney: Report of 3 Cases and Review of the Literature

2006 ◽  
Vol 130 (1) ◽  
pp. 86-89 ◽  
Author(s):  
Libo Qiu ◽  
Pamela D. Unger ◽  
Robert W. Dillon ◽  
James A. Strauchen
Keyword(s):  
Lymphoid Tissue ◽  
Cell Lymphoma ◽  
B Cell Lymphoma ◽  
Lymphoid Cells ◽  
Low Grade ◽  
The Third ◽  
First Case ◽  
Abundant Cytoplasm ◽  
History Of

Abstract Low-grade B-cell lymphoma of mucosa-associated lymphoid tissue involving the kidney is rare. We report a series of 3 cases. The first case occurred in an 83-year-old woman who presented with back pain. The second case was a 53-year-old man with a history of sarcoidosis who was found, in the course of evaluation of sarcoidosis, to have a right renal mass. The third case occurred in a 72-year-old man who had a history of periorbital mucosa–associated lymphoid tissue lymphoma and had been treated with surgery and radiation 1 year prior to this presentation. Histologically, all 3 patients showed infiltrate of uniform small-to-medium–sized lymphocytes with irregular nuclear contours and abundant cytoplasm resembling centrocytes or monocytoid lymphoid cells. The first patient received chemotherapy without complications. The second patient underwent a partial nephrectomy and was asymptomatic at the subsequent follow-up. The third patient developed a pulmonary embolism following nephrectomy, and further follow-up is not available.

INDEX OF SUSPICION

1995 ◽  
Vol 16 (3) ◽  
pp. 117-119
Author(s):  
Randy Cron ◽  
Laurette Ho ◽  
Bradley Bradford
Keyword(s):  
Early Diagnosis ◽  
External Genitalia ◽  
Low Grade ◽  
Palpable Mass ◽  
Pelvic Ultrasonography ◽  
Distended Bladder ◽  
Focus Of Infection ◽  
History Of ◽  
Case Presentations ◽  
Free Area

This section of Pediatrics in Review reminds clinicians of those conditions that can present in a misleading fashion and require suspicion for early diagnosis. Emphasis has been placed on conditions in which early diagnosis is important and that the general pediatrician might be expected to encounter, at least once in a while. The reader is encouraged to write possible diagnoses for each case before turning to the discussion, which is on the following page. We invite readers to contribute case presentations and discussions. Case 1 Presentation A previously healthy 6-month-old girl is seen at the office for evaluation of fussiness and infrequent urination. The child has not voided in the past 9 hours despite her usual fluid intake. She is afebrile, with no focus of infection found on careful physical examination. A palpable mass is felt in the suprapubic area. Her external genitalia are normal. Renal and pelvic ultrasonography reveal an echo-free area superior to a normal lower renal ureteral segment on the left side, with a circular echo free area at the lower end of the ureter extending into and taking up about one quarter of the space within a distended bladder. Case 2 Presentation A 4-year-old boy is seen in your office with a 4-day history of sore throat and low-grade fever.

scholarly journals P397 Surveillance in ulcerative colitis: Can we predict the risk for intraepithelial neoplasia?

2020 ◽  
Vol 14 (Supplement_1) ◽  
pp. S368-S369
Author(s):  
J Estorninho ◽  
P Freire ◽  
S Lopes ◽  
M Ferreira ◽  
M Ferreira ◽  
...  
Keyword(s):  
Ulcerative Colitis ◽  
Disease Duration ◽  
Intraepithelial Neoplasia ◽  
Screening Colonoscopy ◽  
Low Grade ◽  
Surveillance Colonoscopy ◽  
High Quality ◽  
Increased Risk ◽  
History Of ◽  
Low Grade Dysplasia

Abstract Background Ulcerative colitis (UC) has been associated with an increased risk of colorectal cancer (CRC). Although dye spray chromoendoscopy showed superiority to standard colonoscopy in surveillance studies, with the availability of higher-resolution colonoscopes, the utility of chromoendoscopy (CE) has been questioned. We aimed to evaluate the risk of intraepithelial neoplasia (IN) after a high-quality screening colonoscopy (making use of CE or random biopsies (RB) and removing all detected lesions) in a population with longstanding UC and to identify potential risk factors for dysplasia incidence. Methods In a previous study, 145 patients with clinically and endoscopic longstanding (≥8 yr) distal/extensive UC without primary sclerosing cholangitis and/or history of IN were prospectively randomised to undergo CE or RB. In this study, after a median follow-up of 5 additional years, we evaluated subsequent IN incidence in these patients, submitted to surveillance colonoscopy. Patients without high-quality surveillance colonoscopy (with good bowel preparation and cecum intubation) using high-definition were excluded. Results One hundred and twenty-one patients were included. Nine had removed adenomas with low-grade dysplasia in the index colonoscopy. Now, in surveillance colonoscopy, we detected 9 (7.4%) IN: low-grade dysplasia was found in 8 (6.6%) patients and a colorectal adenocarcinoma in 1 (0.008%) patient. After multivariate analysis, IN was significantly associated with older age (68 vs. 52 years, p < 0.05) and higher disease duration (26 vs. 20 years, p < 0.05). No association was found between IN and previous detection of IN in screening colonoscopy sex, the CE or RB use in index colonoscopy, extent of disease, The presence of pseudopolyps, smoking habits, familial history of CRC or maintenance therapy for UC. Conclusion In this study, older patients and higher disease duration were associated with a higher risk of IN in surveillance colonoscopy.

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