Publications by authors named "Sugata N Biswas"

Background: Current gold standard for the diagnosis of gastroesophageal reflux disease (GERD) is 24-hour pH metry though it fails to detect non-acidic reflux. The sensitivity of 24-hour pH metry alone (both catheter-based and Bravo capsule) is questionable, especially if gastric acid secretion is low due to reduced parietal cell mass, Helicobacter pylori-induced gastric atrophy and antisecretory therapy. Accordingly, we analyzed the diagnostic ability of 24-hour pH metry as compared to impedance monitoring in relation to the gastric pH without antisecretory therapy.

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Background: Functional gastrointestinal disorders (FGIDs), including irritable bowel syndrome (IBS), are associated with psychological abnormalities, such as anxiety and depression. Though the data on this are plenty in global literature, Indian data are sparse. We performed a systematic review and meta-analysis of Indian data on anxiety and depression among patients with IBS to estimate their pooled prevalence and to identify the shortcomings so that future areas of research can be identified.

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Primary biliary cholangitis (PBC), a chronic, autoimmune, cholestatic disease, typically occurs in elderly women and commonly presents with pruritus, fatigue, and cholestasis and its complications. Gastric antral vascular ectasia (GAVE), an uncommon cause of upper gastrointestinal bleeding, leading to transfusion-dependent chronic iron deficiency anemia, as the first presentation of PBC is unusual. We present the case of an elderly female with recurrent melena and transfusion-dependent anemia for a year without any history of jaundice, ascites, or hepatic encephalopathy.

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Background And Aim: Although telemedicine is an option for the care of inflammatory bowel disease (IBD) patients during the Coronavirus Disease (COVID)-19 pandemic, its feasibility and acceptability data are scant. Data on the frequency of COVID-19 among patients with IBD, quality of life (QOL), access to health care, psychological stress, and anxiety during the COVID-19 pandemic are scant.

Methods: Video/audio consultation for IBD patients was undertaken after a web-based appointment, and data on acceptability, IBD control, Hospital Anxiety Depression Scale (HADS), and World Health Organization Quality of Life questionnaire (WHOQOL-Bref) were obtained electronically.

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Introduction: Hypokalemia is associated with increased morbidity and at times mortality. "Hypokalemic paralysis", particularly if recurrent, has often been considered synonymous with "hypokalemic periodic paralysis (HPP)"; however, diseases such as Gitelman syndrome (GS), Bartter syndrome (BS), and renal tubular acidosis (RTA) can have identical presentation. We have tried to explore the etiological spectrum along with epidemiological and certain clinical, biochemical, and electrophysiological features in patients with hypokalemic paralysis.

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Mutations in hepatocyte nuclear factor-1β gene result in a multisystemic syndrome where a monogenic form of diabetes (maturity-onset diabetes of young type 5; MODY 5) and renal anomalies, usually bilateral multiple cysts are the most characteristic findings. Many of them have pancreatic structural abnormalities as well. A plethora of extrapancreatic manifestations like altered liver function tests, hypomagnesaemia, hyperuricaemia with/without gout and urogenital malformations, particularly in females are also components of the syndrome.

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A young man with subtle clinical features suggestive of hypersomatotropism presented with acute-onset severe headache. Relevant investigations confirmed polycythaemia and growth hormone (GH)-secreting pituitary macroadenoma with apoplexy. Secondary polycythaemia and myeloproliferative disorders were ruled out.

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Patients with mucopolysaccharidoses (MPS) have a plethora of multisystemic manifestations depending on the particular type, and atypical presentations are not uncommon. MPS type IVA (Morquio A syndrome) has predominant musculoskeletal system involvement and corneal clouding with normal intelligence and can be misdiagnosed as primary skeletal disorders in clinical practice. The absence of corneal clouding with normal urinary glycosaminoglycans (GAGs) level in a proportion of patients with MPS IVA makes the correct diagnosis even more challenging for physicians.

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Primary adrenal myelolipomas, relatively rare benign tumours of the adrenal cortex are typically unilateral, hormonally inactive and asymptomatic, hence often diagnosed as 'adrenal incidentaloma'. Bilateral adrenal myelolipomas, in particular, may be associated with underlying endocrinopathies associated with elevated circulating adrenocorticotropic hormone (ACTH) concentration. Subclinical cortisol hypersecretion, irrespective of its ACTH dependency, does not manifest typical clinical phenotype of hypercortisolemia, and thus termed subclinical Cushing's syndrome.

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A 16-year-old boy with widening of the large joints of the extremities and bilateral genu valgum had been extensively treated with oral vitamin D, with little clinical benefit. A diagnosis of vitamin D-resistant rickets was considered initially but a thorough clinical examination and skeletal survey was suggestive of mucopolysaccharidosis. The diagnosis was confirmed biochemically and subtype classification pointed toward the type I variety of the storage disorder.

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A 45-year-old, non-obese male presented with low-grade, remittent fever and a fluctuant swelling over the posterior aspect of his lower left flank. Laboratory tests revealed leukocytosis, raised ESR, hyperglycemia and raised HbA1C levels. Light microscopy of Ziehl-Neelsen-stained pus sample revealed numerous acid-fast bacilli.

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A 52-year-old man presented with high-grade fever, headache and painful vesicular skin rash involving the upper trunk and upper extremities, 8 days after initiation of chemotherapy with azathioprine (50 mg/day), which had been prescribed for acral vitiligo. There was neither any history of preceding respiratory or gastrointestinal tract infection, nor was the patient known to have malignancy, drug hypersensitivity, inflammatory bowel disease, vasculitis or other autoimmune disease. Laboratory results revealed leucocytosis with neutrophilia and markedly elevated acute phase reactants.

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