| The less mature neurons had abundant pink cytoplasm with central to slightly eccentric nuclei and conspicuous nucleoli. |
| The bone marrow was replaced by an infiltrate of blast cells with medium-sized nuclei, multiple nucleoli, and moderate amounts of cytoplasm. |
| The nuclei were large and vesicular, with irregular nuclear contour and prominent eosinophilic nucleoli. |
| The tumor cells had slightly eosinophilic cytoplasm and pleomorphic nuclei with prominent nucleoli. |
| Less consistently, they found excentric, small nucleoli and nuclear overlap. |
| Electron microscopy revealed polygonal tumor cells with round nuclei having slightly irregular contours and prominent nucleoli. |
