PubMed Health⌕ Search

Biomedical subjects

Anish Bhattacharya

Publications and source records attributed to Anish Bhattacharya.

11 recordsLinked to original sources
PubMed2006

Cervical paraganglioma mimicking a parathyroid adenoma on Tc-99m sestamibi scintigraphy.

A 32-year-old man with a clinical and biochemical profile suggestive of primary hyperparathyroidism presented with a soft tissue mass on the left side of the neck. Multiphasic planar and SPECT Tc-99m sestamibi (MIBI) scintigraphy showed focally increased tracer concentration in the mass. Subsequent histopathology and immunostaining identified the mass as a parathyroid hormone-secreting cervical paraganglioma, indicating that this tumor should be considered in the differential interpretation of MIBI concentration in the neck.

Adenoma↗
PubMed2005

Changes in gastric environment with test meals affect the performance of 14C-urea breath test.

BACKGROUND: (14)C-urea breath test (UBT) is considered to be an accurate diagnostic test for the detection of active Helicobacter pylori infection. Various test meals are used in (14)C-UBT to slow down gastric emptying, and to enhance the gastric distribution, in order to increase the time and area of contact between microorganisms and the tracer substrate. The aim of the present paper was to evaluate the effect of gastric environment on the performance of (14)C-UBT using an alkaline and an acidic liquid test meal having gastric emptying retardant effect. METHODS: The comparison of (14)C-UBT was done with liquid test meals (200 mL water) comprising (i) plain drinking water (PDW); (ii) 1.3 g or 3.0 g citric acid (CA); and (iii) 3.0 g trisodium citrate (TSC). Eighteen patients (37 +/- 12 years, range 18-57 years) with complaints of dyspepsia participated in the study. The status of H. pylori was confirmed by histology and rapid urease test. A total of 93 kBq of (14)C-urea (0.5 mL) in a gelatin capsule was orally administered along with liquid test meals to the overnight fasting subjects. Breath samples were collected and radioactivity measured. Results were expressed as (14)CO(2)/mmol exhaled CO(2) as percentage of administered radioactive urea. RESULTS: Higher acidic gastric environment (pH approx. 2.0) with CA was found to increase the exhaled (14)CO(2) level in a dose-dependent manner as compared to PDW and TSC meal (P < 0.05) at all time points. With TSC test meal, the expired (14)CO(2) level decreased in the lower acidic gastric environment (pH approx. 5.3). The peaks of exhaled (14)CO(2) with TSC test meal were observed at the same time points as that with PDW and CA test meals. The (14)C-UBT with TSC was found to be positive in 77% of patients (10/13). CONCLUSION: Better interaction between the microbial urease and (14)C-urea, caused by a test meal that retards gastric emptying and that changes gastric pH, plays an important role in hydrolysis of the administered (14)C-urea by H. pylori urease.

Adolescent↗
PubMed2005

Infantile cortical hyperostosis.

Infantile cortical hyperostosis (Caffey disease) is characterized by radiological evidence of cortical hyperostosis, soft tissue swellings, fever and irritability. We report a case of Caffey disease highlighting its presentation as pyrexia of unknown origin, appearance on radionuclide bone scintigraphy and our unsatisfactory experience of treating it with Ibuprofen, a prostaglandin inhibitor.

Fever of Unknown Origin↗
PubMed2004

Ursodeoxycholic acid-augmented hepatobiliary scintigraphy in the evaluation of neonatal jaundice.

UNLABELLED: Early differentiation of extrahepatic biliary atresia from intrahepatic cholestasis is important. Hepatobiliary scintigraphy is an excellent noninvasive investigation for ruling out extrahepatic biliary atresia. This study aimed at identifying the role of ursodeoxycholic acid (UDCA), a choleretic agent, in conjunction with hepatobiliary scintigraphy in differentiating extrahepatic biliary atresia from neonatal hepatitis. METHODS: Fifty-one infants (42 male, 9 female) aged 0.3-5.5 mo (mean, 2.9 mo) presenting with neonatal jaundice underwent 99mTc-mebrofenin hepatobiliary scintigraphy. For patients who did not show any excretion of tracer into the intestine till 24 h, the study was repeated after oral administration of UDCA (20 mg/kg every 12 h) for 48-72 h. Ultrasonography and, if required, liver biopsy and intraoperative cholangiography were used with clinical data such as stool color and serologic and other etiologic investigations to form a final diagnosis. RESULTS: Of 51 patients, 19 showed biliary excretion in the first study, ruling out extrahepatic biliary atresia. Neonatal hepatitis was the final diagnosis in these. Of the remaining 32 patients, 12 nonexcretors converted to excretors after UDCA treatment, whereas 20 still showed no biliary drainage. Four nonexcretors on scintigraphy had a final diagnosis of neonatal hepatitis with galactosemia; the remaining 16 had extrahepatic biliary atresia. The specificity of hepatobiliary scintigraphy in ruling out extrahepatic biliary atresia improved from 54.3% to 88.6% (P < 0.001) after UDCA treatment. None of the patients experienced any ill effects from UDCA administration. CONCLUSION: Pretreatment with UDCA significantly improves the specificity of hepatobiliary scintigraphy in ruling out extrahepatic biliary atresia as a cause of prolonged neonatal jaundice.

Administration, Oral↗
PubMedDate not supplied

Lung scintigraphy in the diagnosis and follow-up of pulmonary thromboembolism in children with nephrotic syndrome.

Thromboembolic phenomenon and pulmonary embolism is quite frequent in children with nephrotic syndrome (NS). The incidence of pulmonary thromboembolism in children with NS is as common as in adults, and severity is also reported to be relatively high. The mortality rate in NS with thromboembolic complications may be significantly increased if not diagnosed and treated well in time. For establishing the diagnosis of pulmonary embolism, although the combined use of magnetic resonance venography and CT angiography has been proposed, V/Q scan is still the best modality. We performed serial lung perfusion scans in two young patients with NS who developed sudden onset tachypnea during their stay in the hospital. Initial lung perfusion scans showing marked perfusion defects and normal chest X-rays indicated a high probability for pulmonary embolism. The patients were treated with streptokinase, and the study was repeated. Marked improvement was seen in lung perfusion, thereby highlighting the importance of lung perfusion scan in the follow-up of such patients.

Child, Preschool↗
PubMedDate not supplied

Large spontaneous coronary artery dissections-a study of three cases, literature review, and possible therapeutic strategies.

Spontaneous coronary artery dissection is rare, but is now being increasingly recognized as a prominent cause of acute ischemic coronary events occurring usually in relatively young patients, predominantly females. The authors describe the clinical course of 3 patients (1 woman) in whom large spontaneous coronary artery dissections developed. All had diverse clinical presentations;1 presenting with heart failure, the second with post-myocardial infarction angina, and the third with syncope. The second patient underwent coronary angioplasty with multiple overlapping stents while in the other two, it was the considered opinion to continue aggressive medical therapy. The 1-year follow-up was uneventful in all 3 patients. The risk factors ascertained in our patients were diabetes mellitus, smoking, and hypertension.

Adult↗
PubMedDate not supplied

Comparison of left ventricular functional parameters measured by gated single photon emission tomography and by two-dimensional echocardiography.

The aim of the present study was to evaluate the correlation amongst left ventricular (LV) functional parameters estimated by gated single photon emission tomography (GSPET) and two-dimensional (2D) M-mode, echocardiography (ECHOC). GSPET was performed in a single day stress/rest protocol by using either technetium-99m methoxy-isobutyl-isonitrile ((99m)Tc-MIBI) or technetium-99m tetrofosmin ((99m)Tc-myoview) in 36 consecutive patients, 21 males and 15 females; mean age 57.6+/-11.8 y, range 32-82 y. The various LV parameters studied were: ejection fraction (EF), end systolic volume (ESV), end diastolic volume (EDV), stroke volume (SV) and LV mass (LVM). The GSPET data were reconstructed using an automatic algorithm employing filtered back projection (FBP) and further analyzed by Emory cardiac (EC) toolbox versions EO-00369 and EO-00733 for the quantitative determinations of these parameters. All patients underwent ECHOC within 1-2 h of the post-stress data acquisition of GSPET. Our results showed that the LV volumes and the LVM showed good correlation (r=0.749 to 0.952, P=0.01). These values could thus be used interchangeably. The assessment of these parameters by GSPET therefore does not seem to be affected by the dose of the radioactivity administered as the dose of the (99m)Tc-labeled myocardial agents for acquiring rest study was approximately four times higher than that for the stress study. Our results also showed that the mean +/- SD values of the volumes and the EF of the LV evaluated by the two techniques, differed significantly except significant correlations for ESV, EDV and LVEF were observed between the two methods: r=0.574 to 0.954; 0.347 to 0.952 and 0.516 to 0.876 respectively. On the other hand, a wide disagreement was observed in estimating the LVM by the two techniques. The LVM measurements by 2D ECHOC were approximately double the values estimated by GSPET. Despite the large disagreement, a small correlation (r=0.33, P=0.05) was observed for LVM between the two techniques. In conclusion, although we observed a good correlation for LV volumes and LVM between the GSPET and the ECHOC techniques, yet these two techniques cannot be used interchangeably.

Adult↗