Metastatic neuroblastoma in bone marrow aspirate smears.

The authors observed rosette formation and partially fibrillar, blue-grey, extracellular material in Wright-Giemsa-stained bone marrow aspirate smears in five preparations from three cases of neuroblastoma metastatic to bone marrow. These features are little publicized in the literature and textbooks. These findings in neuroblastoma metastatic to bone marrow should prove helpful in differentiating that entity from acute leukemia and from other metastatic small-cell neoplasms in bone marrow.

An "abnormal" lymphoid proliferation simulating Hodgkin's disease in a burn patient.

A particularly exuberant and unusual lymphoid proliferation in the spleen of a burn patient is presented. Many Reed-Sternberg cell variants and occasional diagnostic Reed-Sternberg cells strongly suggested a diagnosis of Hodgkin's disease. The pattern of distribution and cytology of this lymphoid infiltrate, however, are incompatible with Hodgkin's disease or a non-Hodgkin lymphoma. Morphologic features in this case suggest that the Reed-Sternberg cell is a B lymphocyte. The most probable etiologies of this unusual lymphoid proliferation are reviewed.

Juvenile hemangioendothelioma: report of a case and review of the literature.

A solitary juvenile hemangioendothelioma on the maxillary gingiva of a newborn white male has been presented. No recurrence or evidence of systemic involvement has been noted in the 18 months following excision. The literature was reviewed with emphasis on the varying location and behavior of the lesion and the methods of treatment. Simple excision of the isolated, histologically benign neoplasm is recommended provided adequate follow-up is assured.