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Jabeen S.,National Institute of Cancer Research and Hospital
Mymensingh medical journal : MMJ

Post obturation pain is the pain of any degree after endodontic treatment. There are different opinions regarding incidence of post obturation pain related to single and multi visit root canal treatment. This prospective study was conducted to evaluate the incidence of post obturation pain in single visit and multi visit root canal treatment and to compare the incidence of pain between the two treatment groups. A total of 120 cases of endodontically involved asymptomatic non vital single rooted teeth were selected for this study. The patients were assigned and divided in to two treatment groups, sixty patients each. In single visit group, all teeth were prepared and filled using the standardized preparation and lateral condensation filling technique. In the multi visit treatment group, at the first appointment, the teeth were prepared, and dressed with calcium hydroxide paste for 7 days. At the second appointment, the teeth were prepared and obturated by using lateral condensation technique. The frequency of post obturation pain was recorded as no pain, slight, moderate and severe pain and evaluated at the day 1 and at the day 7 after obturation. The data were analyzed statistically by using SPSS version-12. P value <0.05 was taken as significant. The study showed that the post obturation pain in the single visit treatment group was more than multi visit treatment group, which is significant (p value <0.044). Out of the 120 patients, 86(71.7%) patients had no pain, 19(15.8%) had slight pain and 15(12.5%) patients had moderate pain at the day 1 after obturation. At the day 7 after obturation, 108(90%) patients had no pain, 9(7.5%) had slight pain and 3(2.5%) patients had moderate pain. No patient noticed severe pain during the follow up period. Older patient had significantly more post obturation pain than the younger patient. There was higher incidence of post obturation pain following the single visit root canal treatment. In multi visit root canal treatment with intra-canal medicaments seems to reduce the post obturation pain. Source

Hossain M.A.,National Institute of Cancer Research and Hospital
Mymensingh medical journal : MMJ

Synovial chondromatosis rarely occurs in the foot. We have diagnosed such a case in National Institute of Cancer Research and Hospital, Mohakhali, Dhaka. The patient came to us with a swelling in the dorsum of left foot. He had a history of operation but one year later swelling reappeared in the same place. Fine Needle Aspiration Cytology (FNAC) of the swelling revealed few atypical cells and diagnosed as a case of malignant neoplasm. Later on surgical intervention was done in the form of wide excision and final histopathology report came as Synovial chondromatosis. No special treatment was given other than periodical follow up. The patient has been responding well. There was no clinical or radiographic evidence of recurrence. Source

Haque S.,National Institute of Cancer Research and Hospital | Hossain A.,Dhaka Medical College | Quddus M.A.,Dhaka Medical College | Jahan M.U.,Bangabandhu Sheikh Mujib Medical University
Bangladesh Medical Research Council Bulletin

Magnetic Resonance Imaging (MRI) has been the primary imaging modality and has revolutionized the imaging of brain tumors. MRI can display accurate multi planer imaging without interfering of adjacent structures specially for posterior fossa mass lesion. MRI is the imaging modality of choice for cerebollo-pontine (CP) angle Schwannoma. The study was performed to determine, the diagnostic accuracy of MRI in the evaluation of intracranial extra axial CP angle Schwannoma. MRI scan of brain was done on 42 consecutively selected patients referred for the evaluation of CP Acoustic Schwannoma. The age range from 21-60 years and the mean age was 42.85(±9.5) years. Highest incidence of cerebollo-pontine angle (CPA) mass were found 42.86% in 41-50 age group of patients. Male and Female ratio was 1.083:1. The most common presenting feature of the patients with CP angle Acoustic Schwannoma were headache 90.48%. Acoustic Schwannoma is T 1 hypointense 100%, T 2hyper intense 84.61% and heterogeneously hyper intense 92.30% in FLAIR image. After giving contrast agents, homogeneous enhancement 57.69% and heterogeneous 42.31% cases of Acoustic Schwannoma. Overall 61.54% Acoustic Schwannoma strong contrast enhancement was observed. Dural tail was observed in 26.92% cases. Perilesional edema was observed 38.46% cases. Mass effect was observed in 76.92%. After complete MRI evaluation 61.9% had Acoustic Schwannoma. Histopathologicaly proved cases showed out of all patients Acoustic Schwannoma 59.52%. The overall sensitivity of MRI to diagnose Acoustic Schwannoma were found, Sensitivity- 96%, Specificity-88.2%, PPV-92.31%, NPV-93.75% and Acceuracy 92.86%. Test is significant with p<0.0001 level. It is conceivable that MRI is a highly accurate, sensitive and Gadolinium enhanced MRI is more sensitive in detection of acoustic Schwannoma. MR imaging is the study of choice for the examination of the patient of cerebellopontine angle Schwannoma because of its high sensitivity specially after use of contrast material. Source

Haque M.E.,National Institute of Cancer Research and Hospital
Mymensingh medical journal : MMJ

The use of oral mucous membrane graft onlay urethroplasty represents the most widespread method of bulbar urethral stricture repair. We investigated the short term result of oral mucous membrane graft placed on the ventral surface for management of bulbar urethral stricture. Patients with Bulbar urethral stricture of any length, infection free urinary tract and informed consent for oral mucosa harvesting and urethroplasty were selected for study. We enrolled 108 cases of bulbar urethral stricture patients from January 2004 to July 2009. The mean ± SD preoperative maximum flow rate of 5.2 ± 2.6 ml/sec and mean ± SD PVR 87 ± 58.3 ml were treated by substitution urethroplasty with oral mucous membrane by a single surgical team in a private hospital. Causes of stricture were trauma 26(24.1%), infection 58(53.7%), catheter induced 8(7.4%), post TURP 11(10.2%) and unknown 5(4.6%). Oral mucous membrane was harvested from the cheek or from the inner side of lower lip. Defect of the urethra displayed by longitudinal ventral urethrotomy and the graft was sutured over the edges of the incised urethral mucosa over a 14 Fr latex Foley's catheter. Spongiosum tissue was closed over the graft. Pericatheter urethrogram was performed in all cases to check for the anastomotic leakage and the Catheter was removed after 2 weeks of the procedure. After removal of catheter uroflowmetry & ultrasound scan of bladder were performed to estimate the maximum flow rate and post voidal residue. The patient was followed-up every 3 months with uroflowmetry & ultrasonography. The median (range) age of the patients was 32(21-72) years. Mean follow up period was 36 months (range 12-54). Mean ± SD stricture length was 3.7 ± 2.6 cm. The overall success rate was 91.7%. Mean ± SD flow rate was 23 ± 4.2 ml/sec, mean ± SD post void residue was 25 ± 15.5 ml and patient quality of life (QOL) was excellent in almost all patients. Overall complications were seen in 9(8.3%) cases. Of which, restricture occurred in 6 patients; periurethral fistulae seen in 2 cases and per urethral bleeding in 1 patient. No significant complications were observed at the donor site. Oral numbness and mild discomfort complained by 67.6% patients which were managed by reassurance only. In our experience ventral placement of oral mucous membrane graft along with spongioplasty is a very easy procedure with very encouraging short term result. Source

Uddin M.T.,National Institute of Cancer Research and Hospital
IPAC 2012 - International Particle Accelerator Conference 2012

Quality Control (QC) data of modern linear accelerators, collected by NationalInstitute of Cancer Research and Hospital, Dhaka, Bangladesh between the years 2006 and2010, were analyzed. Three Linear Accelerators is included in this work. The goal was toprovide information for the evaluation and elaboration of QC of accelerator outputs and topropose a method for QC data analysis. Short- and long-term drifts in outputs werequantified by fitting empirical mathematical models to the QA measurements. Normally,long-term drifts were well (≤1.5%) modeled by either a straight line or asingleexponential function. A drift of 2% occurred in 18 ± 12 months. The shortestdrift times of only 2-3 months were observed for some new accelerators just after thecommissioning but they stabilized during the first 2-3 years. The short-termreproducibility and the long-term stability of local constancy checks, carried out with asealed plane parallel ion chamber, were also estimated by fitting empirical models to theQC measurements. The reproducibility was 0.3-0.6% depending on the positioning practice ofa device. Long-term instabilities of about 0.3%/month were observed for some checkingdevices. The reproducibility of local absorbed dose measurements was estimated to be about0.4%. The proposed empirical model fitting of QC data facilitates the recognition oferroneous QC measurements and abnormal output behavior, caused by malfunctions, offering atool to improve dose control. Copyright © 2012 by IEEE. Source

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