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KMID : 0387919930040010045
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Korean Journal of Cytopathology
1993 Volume.4 No. 1 p.45 ~ p.51
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Peripheral Neuroblastoma of the Ulnar nerve: Diagnosis by Fine needle Aspiration
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Abstract
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A 3-year-old woman who was diagnosed as peripheral neuroblastoma by fine needle aspiration of a soft mass of the right upper arm is described. She presented a slowly growing soft mass of the right upper arm for 1 month. The
right
humerus revealed no abnormal finding on x-ray. Ultrasonogram of the right upper arm revealed a well demarcated. smooth marginated solid mass without invasion of adjacent structures. Fine needle aspiration was done under the impression of soft
tissue
tumor with undetermined biologic behavior. The aspirates were highly cellular and the tumor cells were dispersed both singly and in clusters of varying size. The clusters occasionally showed a central capillary core and rosette-like
structures.
The tumor cells were small in size and had a small to medium amount of cytoplasm. Some of them revealed slender cytoplasmic processes. The nuclei showed distinct nuclear membranes. finely clumped chromatin and small conspicuous
nucleoli, Cellular pleomorphism or mitotic figure was not definite. These cytologic findings were interpreted as a malignant, non-lymphomatous, small round cell tumor, most likely representing peripheral neuroblastoma or Ewing's sarcoma.
Final
diagnosis was confirmed by simple excision as peripheral neuroblastoma.
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