Forensic age estimation in living children: how accurate is the Greulich-Pyle method in Sabah, East Malaysia?

Background: The Greulich and Pyle's Radiographic Atlas of Skeletal Development of the Hand and Wrist (GP Atlas) is the most widely used method of determining the bone age (BA) of a child. It is also a widely accepted method for forensic age determination. As there is limited local bone age data for forensic age estimation, the purpose of this study was to assess the accuracy of the GP Atlas for forensic age determination in living Sabahan children. Method: This study recruited 182 children between the ages of 9 years to 18 years. BA estimation of the left-hand anteroposterior radiographs were performed by two experienced radiologists using the Greulich-Pyle method. Results: The BA estimates from two radiologists had very high interobserver reliability (ICC 0.937) and a strong positive interobserver correlation (r > 0.90). The GP method, significantly and consistently underestimated chronological age (CA) by 0.7, 0.6 and 0.7 years in overall children, boys and girls respectively with minimal errors. Mean absolute error and root of mean squared error for overall children was 1.5 and 2.2 years respectively, while mean absolute percentage error was 11.6%. This underestimation was consistent across all age groups but was statistically significant only at 13-13.9 and 17-18.9 years old age groups. Conclusion: Despite high interobserver reliability of BA estimation using the GP Atlas, this method consistently underestimates the age of the child in all children to a significant degree, for both boys and girls across all age groups, with an acceptably low level of error metrics. Our findings suggest that locally validated GP Atlas or other type of assessments (artificial intelligence or machine learning) are needed for assessment of BA to accurately predict CA, since current GP Atlas standards significantly underestimated chronological age with minimal error for children in Sabah. A larger population-based study would be necessary for establishing a validated atlas of a bone age in Malaysia.

Pneumaturia and faecaluria: Symptoms leading to a life-saving diagnosis.

Background: Colonic diverticulosis is often asymptomatic, but it can complicate bleeding, abscess and stricture. Pneumaturia and faecaluria are unexpected manifestations of colonic diverticulitis complicated by colovesical fistula formation. Case presentation: This case report highlighted a 57-year-old man who presented with lower abdominal pain which was associated with pneumaturia and fecaluria. He was diagnosed with colovesical fistula after being misdiagnosed with other diseases from various clinic visits. Direct fluoroscopy was performed and a diverticular fistula of the sigmoid colon was confirmed by computed tomography of the abdomen. Hartmann's procedure and resection of the posterior wall of the bladder were resected. Conclusion: Pneumaturia and faecaluria are common but distinct manifestations of complicated diverticular diseases. Attention should be paid to general practitioners to achieve proper referral, hence early treatment and prevention of disease-related complications.

Delayed presentation of a huge abdominopelvic mass during the COVID-19 pandemic.

Background: Giant ovarian cysts are rare in developed countries due to advanced achievements in medical diagnostics. However, in the midst of the coronavirus disease 2019 (COVID-19) pandemic, patients with non-COVID-19-related illnesses tend to delay their health-seeking attention; thus, they had presented late. Case presentation: A 25-year-old single lady complained of a 3-month worsening abdominal pain and distention. She was initially well but neglected the symptoms due to the COVID-19 situation, yet came to our attention after she developed obstructive symptoms. A computed tomography (CT) scan of the abdomen revealed a huge cystic lesion from the pelvic area, which later was found to be from the right ovary upon urgent laparotomy exploration. The histopathological examination was consistent with mucinous cystadenoma of the ovary. Discussion: Acute non-COVID-19-related emergencies have decreased, as evidenced by reduced visits to the Emergency Department, and the number of abdominal CT scans. An emergency case like a huge abdominopelvic mass deserves an extensive radiologic examination as clinical assessment alone may not be adequate. Preoperative CT is superior to ultrasonography in getting the extent of the lesion, local infiltration, staging purpose, and surgical intervention. Pathology with a variety of spectrums such as mucinous neoplasm deserves to be investigated, evaluated, and resected even during the COVID-19 pandemic. Conclusion: A giant abdominopelvic cystic mass can present emergency havoc during the COVID-19 pandemic. Urgent surgical intervention is mandatory by using full protection and exercising extreme precaution, regardless of the preoperative screening to avoid unnecessary viral transmissions.

A clinically silent tumour of adrenal myelolipoma: A case report.

INTRODUCTION: Adrenal myelolipoma is a rare, non-functional, benign neoplasm which is constituted of mature haematopoietic elements and adipose tissues in various proportions. It is diagnosed accidentally and frequently with the widespread use of imaging modalities. PRESENTATION OF CASE: We report a 63-year-old lady with incidental findings of adrenal tumour on computed tomography (CT) scan during a routine medical check-up. She underwent tumour resection in view of a large tumour of 7 cm in size. DISCUSSION: CT scan is sensitive to diagnose adrenal myelolipoma in view of its fat-laden property and useful to monitor the tumour progress. Even previously she opted for conservative management; the decision for surgery was made in view of enlarging tumour and risk of surrounding tissue compression. CONCLUSION: With increased awareness, the detection rate of this tumour is improving, hence able to prevent the complications of a large tumour such as compression, bleeding and tumour necrosis.

Expression distribution of cancer stem cells, epithelial to mesenchymal transition, and telomerase activity in breast cancer and their association with clinicopathologic characteristics.

A total of 167 surgically resected primary invasive breast carcinomas and 63 metastatic lymph node lesions were analyzed for immunohistochemical (IHC) localization of the CD44(+)CD24(-low) breast cancer stem cell (CSC) markers, epithelial to mesenchymal transition (EMT) markers, and telomerase activity by double-staining IHC technique, in formalin-fixed, paraffin-embedded tissue, the results were validated by double-staining immunofluorescent and flow cytometry techniques. The results showed that CSCs with CD44(+)CD24(-low) phenotype were significantly increased in node-positive tumors, high-grade tumors, and ductal carcinoma in situ (DCIS). There was a high incidence of telomerase expression in metastatic lymph node lesion. There were considerably high number of tumor cells with EMT expression in metastatic lymph node lesion, and triple-negative tumor. The occurrence of EMT phenomena was usually accompanied by the co-existence of CSCs of CD44(+)CD24(-low) phenotype. There was no association between the existence of CSCs and detection of telomerase activity in tumor cells. Increased numbers of both CSCs of CD44(+)CD24(-low) phenotype and cells underwent EMT in DCIS lesion might be an initial step in the stromal invasion and propagation of breast cancer, and occurrence of EMT in the breast tumor associated with high prevalence of CSCs, promoting tumor invasiveness and metastasis.