Figure 1From: Extrapulmonary small cell sarcinoma: involvement of the brain without evidence of extracranial malignancy by serial PET/CT scansLight microscopy and immuostaining of patient's tumor. A) Syaptophysin immunostaining, 150×. B) Hematoxylin and eosin staining, 150×. C) Thyroid Transcription Factor-1 (TTF-1) immunostaining, 300×.Back to article page