Purpose The purpose of this study was to describe the use of lymphoscintigraphy and sentinel lymph node biopsy for the management of children with melanoma and sarcomas. We report the experience of two children’s hospitals that utilize this technique to identify sentinel lymph nodes for lymph node biopsy and dissection. Methods We identified 56 patients (median age 10.8 years) who underwent 58 lymphoscintigraphy procedures. There were 33 patients with melanoma and melanocytic lesions, and 23 with sarcomas. Results Of 58 lymphoscintigraphy procedures, sentinel lymph nodes were identified in 52 (90% success rate). Using the combination of intraoperative blue dye injection and lymphoscintigraphy, the success rate was 95% (55/58). Metastatic disease was found in 14 sentinel lymph nodes (13 patients with melanoma and melanocytic lesions, and 1 patient with rhabdomyosarcoma). Conclusion We have found that lymphoscintigraphy with sentinel lymph node biopsy is an effective method to identify patients who may benefit from more extensive lymph node dissection and to identify those patients who are unlikely to benefit from further lymph node exploration.

We sought to determine the characteristics of brain perfusion in patients with corticobasal degeneration (CBD) using single photon emission computed tomography (SPECT) and statistical parametric mapping (SPM). Thirteen patients with CBD and 10 age-matched healthy volunteers were examined using brain perfusion SPECT and (99m)Tc-ethyl cysteinate dimer (ECD). Regional cerebral blood flow (rCBF) measurements were performed noninvasively using a graphic analysis method. Both the absolute rCBF data (raw data) and the adjusted rCBF data (global CBF normalized to 50 ml/100 g/min) were used in the SPM analysis. A significant decrease in the absolute rCBF was observed in extended areas of the brain in CBD patients compared to the control group. These areas included the frontal, parietal, and temporal cortices; basal ganglia; thalamus; and pontocerebellar regions. Our results suggest that the extent of the reduced rCBF region in CBD patients is more widespread than previously reported.

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Purpose The purpose of this analysis was to evaluate the utility of FDG PET/CT scanning in patients with Wilms’ tumors. Methods A total of 58 scans were performed in 27 patients (14 male, 13 female; ages: 1.9–23 years, median: 7 years) with proven Wilms’ tumor. Twenty-six patients (56 scans) were studied at the time of suspected relapse, progressive disease, persistent disease, or for monitoring of therapy. Results In the 27 patients with Wilms’ tumor, 34 scans showed areas of abnormal uptake consistent with metabolically active tumors. Of the patients, 8 (24 scans) had pulmonary metastases larger than 10 mm in diameter, 10 (12 scans) had hepatic metastases, 11 (11 scans) had regional nodal involvement, 3 (3 scans) had bone metastases, 1 (1 scan) had chest wall involvement, 2 (2 scans) had pancreatic metastasis, and 5 (5 scans) had abdominal and pelvic soft tissue involvement. Two of eight patients with lung metastases had variable uptakes. Lung lesions 10 mm or smaller were not consistently visualized on PET scans. One patient with a liver metastasis showed no uptake on PETscan after treatment (size decreased from 45 to 15 mm). Conclusion Most Wilms’ tumors concentrate FDG. However, small pulmonary metastases may be better visualized with CT. FDG PET/CT appears useful for defining the extent of involvement and assessing the response to treatment.

:Lung cancer is an important & widespread disease that contributes a major health problem worldwide. Lung cancer kills over 1 million people per year. Cigarette smoking is the major cause of lung cancer. CT scan is the principal radiological examination adjunct to X-Ray chest examination in diagnosis & management of lung cancer. The main Objective of the study was to assess the diagnostic usefulness of CT scan in evaluating & characterize the different types of lung tumors and to correlate CT findings of lung tumors with that of cytopathology. This study was carried out in the department of Radiology & Imaging, Dhaka medical college hospital, Dhaka during the period from 1st January 2007 to March 2008. It was a cross sectional study. Total 51 patients were selected conveniently, detailed history particularly symptoms related to lung tumors was carefully elicited to obtain maximum possible information regarding the illness. Possible diagnosis was established by the combination of history, physical examination, laboratory & radiological investigations. Then patients were underwent CT examination of lung. Cytopathological sample were obtained from the lesion by guided aspiration. Collected FNAC samples were send for cytopathology & collected reports were compared with CT scan reports. Sensitivity of CT to diagnose lung tumor was 97.4%, specificity 76.9% & accuracy 92.2 %.