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The Korean Journal of Pathology 2000;34(8): 588-596.
Expression of Neuron Specific Enolase, Chromogranin, and Synaptophysin in Peripheral Neuroblastic Tumors.
Hyung Seok Kim, Jae Ha Hwang, Jong Jae Jung, Min Cheol Lee
1Department of Pathology, Seonam University Medical School, Namwon 590-711, Korea.
2Departments of Plastic Surgery, Chonnam National University Medical School
3Departments of Pathology, Chonnam National University Medical School
The presence and distribution of pan-neuroendocrine markers such as neuron-specific enolase (NSE), chromogranin (CG), and synaptophysin (SYP) were investigated by immunohistochemistry in 15 cases of neuroblastic tumors, including four cases of neuroblastomas, six cases of ganglioneuroblastomas, and five cases of ganglioneuromas. Three cases of normal sympathetic ganglion were used for the normal control group. NSE was observed in all cases and both in ganglion cells and in neuropils. NSE was detected not only in the majority of the neuroblasts showing signs of differentiation, but also in some poorly differentiated neuroblasts. All cases of neuroblastic tumors were positive for CG, however, some variability of staining intensity and distribution patterns were noted. CG was found mainly in differentiated neuroblasts with enlarged cytoplasm and nuclei along the periphery of the perikaria, and was also found in the perinuclear regions of some undifferentiated cells. SYP was positive in 9 of 11 cases. In all of the 9 cases, SYP was detected in some differentiating neuroblasts and differentiated neuroblasts, as well as the mature ganglion cells. However, it has scarcely stained in dot or granular pattern. Two CG-negative tumors were also negative for SYP. Our data indicate that antibodies against NSE and CG are helpful as a diagnostic aid for neuroblastic tumors.
Key Words: Neuroblastic tumor; Neuron-specific enolase; Chromogranin; Synaptophysin