MyMedR

Displaying all 13 publications

Abstract:

Sort:

An unexpected encounter with jejunal web after foreign bodies entrapment in a toddler

Yik YI, How AK

Med J Malaysia, 2019 Jun;74(3):231-233.
PMID: 31256180

We present a very rare case of jejunal web discovered after a toddler presented with foreign bodies entrapment, following incidental ingestion. This is perhaps the first case reported in the English publication. Expectant management with spontaneous passage of foreign bodies failed. Serial abdominal radiographs failed to determine the site of the foreign bodies accurately. Endoscopic removal was unsuccessful. Surgical removal was warranted with unexpected intra-operative finding of a jejunal web with foreign body entrapment. Although rare, a congenital intestinal web must be considered in a child presents with failure of expectant management following foreign body ingestion as surgical intervention is necessary.

Matched MeSH terms: Radiography, Abdominal
Fulltext The Radiopacity Of Dental Prostheses (Fixed And Removable) On Plain Radiographs - An Experimental Study

Kasim, N.H.A., Abdullah, B.J.J., Mahadevan, J., Yunus, N.

Ann Dent, 1998;5(1):-.
MyJurnal

The impaction of dental prostheses in either the airway or esophagus is an under-recognized problem which may result in severe morbidity or even mortality. The radio-opacity and the size of fixed and removable dental prostheses in an animal carcass was investigated. Prostheses were placed one at a time in the oro-laryngopharynx or in tho trachea and the esophagus. Lateral radiographs were taken for each prosthesis in site. The radio-opacity and size of the prostheses on the radiograph was graded. Most of the prostheses investigated were radio-opaque though the removable prostheses were more likely to be radiolucent and differ in size. In a symptomatic patient with a missing dental prosthesis, a negative chest or abdominal radiograph does not exclude impaction, inhalation or ingestion. Further evaluation with endoscopy or even computed tomography may be essential to reduce the possibility of severe morbidity or even mortality.

Matched MeSH terms: Radiography, Abdominal
Fulltext Walking on thin ice! Identifying methamphetamine "drug mules" on digital plain radiography

Abdul Rashid SN, Mohamad Saini SB, Abdul Hamid S, Muhammad SJ, Mahmud R, Thali MJ, et al.

Br J Radiol, 2014 Apr;87(1036):20130472.
PMID: 24472728 DOI: 10.1259/bjr.20130472

The purpose of this study was to retrospectively evaluate the sensitivity, specificity and accuracy of identifying methamphetamine (MA) internal payloads in "drug mules" by plain abdominal digital radiography (DR).

Matched MeSH terms: Radiography, Abdominal/methods*
Wavelet-based compression of medical images: filter-bank selection and evaluation

Saffor A, bin Ramli AR, Ng KH

Australas Phys Eng Sci Med, 2003 Jun;26(2):39-44.
PMID: 12956184

Wavelet-based image coding algorithms (lossy and lossless) use a fixed perfect reconstruction filter-bank built into the algorithm for coding and decoding of images. However, no systematic study has been performed to evaluate the coding performance of wavelet filters on medical images. We evaluated the best types of filters suitable for medical images in providing low bit rate and low computational complexity. In this study a variety of wavelet filters are used to compress and decompress computed tomography (CT) brain and abdomen images. We applied two-dimensional wavelet decomposition, quantization and reconstruction using several families of filter banks to a set of CT images. Discreet Wavelet Transform (DWT), which provides efficient framework of multi-resolution frequency was used. Compression was accomplished by applying threshold values to the wavelet coefficients. The statistical indices such as mean square error (MSE), maximum absolute error (MAE) and peak signal-to-noise ratio (PSNR) were used to quantify the effect of wavelet compression of selected images. The code was written using the wavelet and image processing toolbox of the MATLAB (version 6.1). This results show that no specific wavelet filter performs uniformly better than others except for the case of Daubechies and bi-orthogonal filters which are the best among all. MAE values achieved by these filters were 5 x 10(-14) to 12 x 10(-14) for both CT brain and abdomen images at different decomposition levels. This indicated that using these filters a very small error (approximately 7 x 10(-14)) can be achieved between original and the filtered image. The PSNR values obtained were higher for the brain than the abdomen images. For both the lossy and lossless compression, the 'most appropriate' wavelet filter should be chosen adaptively depending on the statistical properties of the image being coded to achieve higher compression ratio.

Matched MeSH terms: Radiography, Abdominal/methods*
Fulltext Spontaneous rupture of renal angiomyolipoma presenting as acute abdomen

Koh KB, Wightman JA, George J

Med J Malaysia, 1996 Mar;51(1):148-50.
PMID: 10967998

Five cases of renal angiomyolipoma which underwent spontaneous rupture are described. These patients presented as an "acute abdomen" for which the diagnosis was not initially apparent. A high index of suspicion is required to make the diagnosis even with modern imaging techniques. The treatment of these tumours is discussed.

Matched MeSH terms: Radiography, Abdominal
Fulltext Huge Retroperitoneal Cyst Masquerading as Ovarian Tumour: A Case Report

Johan S, Hassan MF, Hayati F, Azizan N, Payus AO, Edwin See UH

Front Surg, 2020;7:585411.
PMID: 33195391 DOI: 10.3389/fsurg.2020.585411

Retroperitoneal cystic mass is a rare surgical condition that is often misdiagnosed preoperatively. Here, we report a case of a 56-year-old woman who presented with abdominal swelling for a 1-year duration, which was associated with lower abdominal pain for 6 months. Her abdominal radiograph showed a huge radiopaque lesion, and contrast-enhanced computed tomography scan of the abdomen reported it as a left ovarian serous cystadenoma causing local mass effect to the left ureter leading to mild left hydronephrosis. She underwent exploratory laparotomy and noted there was a huge retroperitoneal cystic mass. The histopathological assessment finding was consistent with a benign retroperitoneal cyst. This case report aims to share the rare case of primary retroperitoneal lesions, which can cause a diagnostic challenge preoperatively to all clinicians despite advanced achievement in medical imaging.

Matched MeSH terms: Radiography, Abdominal
Fulltext Severe heartworm disease with pulmonary hypertension in a local dog

Leong, Z.P., Watanabe, M., Lim, M.L.

Jurnal Veterinar Malaysia, 2015;27(1):27-30.
MyJurnal

A 4-year-old, male local dog was referred to University Veterinary Hospital-Universiti Putra Malaysia (UVH-UPM) due to
dyspnoea and ascites. Full diagnostic investigations inclusive of blood haematology, serum biochemistry, blood smear examinations
for haemopathogens, heartworm antigen test, thoracic and abdominal radiography and echocardiography were conducted. A
diagnosis of severe heartworm disease was made from the positive heartworm antigen test, the presence of heartworms on
echocardiography and the accompanying advanced clinical findings. This was the first case of right-sided heart failure due to severe
heartworm disease with concurrent pulmonary hypertension diagnosed in UVH-UPM from which the moribund dog was
successfully stabilised during hospitalisation.

Matched MeSH terms: Radiography, Abdominal
Fulltext Comparison of Interobserver Reliability between Junior and Senior Resident in Assessment of Developmental Dysplasia of The Hip Severity using Tonnis and International Hip Dysplasia Institute Radiological Classification

Ismiarto YD, Agradi P, Helmi ZN

Malays Orthop J, 2019 Nov;13(3):60-65.
PMID: 31890112 DOI: 10.5704/MOJ.1911.010

Introduction: The radiographic classification for developmental dysplasia of hip to quantify the severity of disease consist of Tonnis and International Hip Dysplasia Institute (IHDI) classification. The Ossification center of the femoral head in DDH patient more than six months is still vague or eccentric, so the reliability of both classifications is still in question and especially is influenced by the experience of the observer. This study aims to test and compare interobserver reliability in evaluation of DDH patients using IHDI and Tonnis classification assessed by senior and junior orthopaedic residents which had different degree of experience. Materials and Methods: This study used retrospective analysis of pelvic supine AP view radiograph of DDH patients from 2014 to 2017. All three observer groups analysed the pelvis radiographs using Tonnis and IHDI classification. Inter and intra-observer reliability was measured by Cohen's and Fleiss Kappa method, respectively. Results: The Fleiss Kappa value for 15 radiographs of DDH patients assessed by senior residents using Tonnis and IHDI classification are 0.715 and 0.832 and result of Fleiss Kappa value assessed by junior residents are 0.577 and 0.845, respectively. Intra-observer reliability for Tonnis classification was lower in junior group compared to other two groups but showed almost perfect value in all groups for IHDI classification. Conclusion: Significantly different results were noted between junior and senior residents in assessing DDH severity, with higher diagnostic reliability in senior residents compared to junior residents. In general, junior resident has less clinical experiences in many aspects in comparison with the seniors.

Matched MeSH terms: Radiography, Abdominal
Entrance surface dose and image quality: comparison of adult chest and abdominal X-ray examinations in general practitioner clinics, public and private hospitals in Malaysia

Hambali AS, Ng KH, Abdullah BJ, Wang HB, Jamal N, Spelic DC, et al.

Radiat Prot Dosimetry, 2009 Jan;133(1):25-34.
PMID: 19223292 DOI: 10.1093/rpd/ncp007

This study was undertaken to compare the entrance surface dose (ESD) and image quality of adult chest and abdominal X-ray examinations conducted at general practitioner (GP) clinics, and public and private hospitals in Malaysia. The surveyed facilities were randomly selected within a given category (28 GP clinics, 20 public hospitals and 15 private hospitals). Only departmental X-ray units were involved in the survey. Chest examinations were done at all facilities, while only hospitals performed abdominal examinations. This study used the x-ray attenuation phantoms and protocols developed for the Nationwide Evaluation of X-ray Trends (NEXT) survey program in the United States. The ESD was calculated from measurements of exposure and clinical geometry. An image quality test tool was used to evaluate the low-contrast detectability and high-contrast detail performance under typical clinical conditions. The median ESD value for the adult chest X-ray examination was the highest (0.25 mGy) at GP clinics, followed by private hospitals (0.22 mGy) and public hospitals (0.17 mGy). The median ESD for the adult abdominal X-ray examination at public hospitals (3.35 mGy) was higher than that for private hospitals (2.81 mGy). Results of image quality assessment for the chest X-ray examination show that all facility types have a similar median spatial resolution and low-contrast detectability. For the abdominal X-ray examination, public hospitals have a similar median spatial resolution but larger low-contrast detectability compared with private hospitals. The results of this survey clearly show that there is room for further improvement in performing chest and abdominal X-ray examinations in Malaysia.

Matched MeSH terms: Radiography, Abdominal/statistics & numerical data*
Progressive gas formation in a deceased person during mortuary storage demonstrated on computed tomography

Singh MK, O'Donnell C, Woodford NW

Forensic Sci Med Pathol, 2009;5(3):236-42.
PMID: 19669956 DOI: 10.1007/s12024-009-9103-y

We report the case of an 82-year-old woman with a past history of diabetes mellitus who died following blunt head injury sustained in a fall resulting in an acute subdural hematoma. Serial postmortem CT scans of the chest and abdomen performed over a 3-day period demonstrated progressive intra-hepatic and intra-cardiac gas formation whilst the deceased was stored in a standard mortuary refrigerator at a nominated temperature of 4 degrees C. Measured mortuary refrigerator temperatures over a 7 day period showed statistically significant day to day variability in temperatures above 4 degrees C as well as variations in temperature depending on location within the refrigerator space. In the absence of other known factors associated with such gas formation, putrefaction seems the likely cause despite a lack of obvious external features. This phenomenon must therefore be taken into account when interpreting the presence of visceral gas on postmortem CT and relating such gas to the cause of death.

Matched MeSH terms: Radiography, Abdominal
Fulltext Abdominal tuberculosis manifested as tuberculosis of the urachal sinus in an adolescent and the role of laparoscopy in the management: a rare case report

Siow SL, Sha HL, Wong CM

BMC Infect Dis, 2016 Feb 05;16:68.
PMID: 26850778 DOI: 10.1186/s12879-016-1405-6

BACKGROUND: Abdominal tuberculosis (TB) is an uncommon affliction in adolescence. It is usually associated with pulmonary tuberculosis. The disease is caused by lymphohaematogenous spread after primary infection in the lung or ingestion of infected sputum and has a typically protean and nonspecific presentation. The occurrence of TB in an urachal remnant is probably from the contiguous spread of an abdominal focus or mesenteric lymph node. Urachal TB is a rare entity, with only two reported cases in the literature. We report here a case of clinically silent pulmonary and abdominal TB that manifested in the infection of an urachal sinus and highlight the role of laparoscopy in its diagnosis and treatment.
CASE PRESENTATION: A 14-year-old boy presented to our institution with peri-umbilical swelling and purulent discharge from his umbilicus for 2 weeks duration. There were no radiological, microbiological or clinical evidences of TB in the initial presentation, though he had close social contact with someone who had TB. A computed tomography scan of the abdomen confirmed the diagnosis of an urachal abscess. An incision and drainage procedure was performed followed by a course of antibiotics. A scheduled laparoscopic approach later showed that the peritoneum and serosal surface of the small and large intestines were studded with nodules of variable sizes, in addition to the urachal sinus. The histology of the resected tissues (urachal sinus and nodules) was consistent of TB infection. He recovered fully after completing 6 months of anti-tuberculous therapy.
CONCLUSION: This report highlights a rare case of TB urachal abscess in an adolescent boy, the difficulties in the diagnosis of abdominal tuberculosis, the need to consider TB as a cause of urachal infection in endemic areas and the use of laparoscopy in both diagnosis and treatment.

Matched MeSH terms: Radiography, Abdominal
Fulltext Resection and reconstruction of retroperitoneal sarcoma of spinal roots

Imran Y, Zulmi W, Faisham WI, Zainal M

Med J Malaysia, 2004 Dec;59 Suppl F:75-7.
PMID: 15941171
Matched MeSH terms: Radiography, Abdominal
Beware the undescended testis and abdominal mass

Koh KB

Aust N Z J Surg, 1996 Dec;66(12):851-3.
PMID: 8996073

We report five patients who presented with seminoma of an undescended testis to highlight the importance of dealing with adult cryptorchidism. On the basis of the literature review and our experience, we advocate orchidectomy for post-pubertal cryptorchid patients of any age because follow-up may be difficult, and treatment for the tumour may be unsuccessful.

Matched MeSH terms: Radiography, Abdominal