1. Primary Malignant Ependymoma of the Lung
THOMAS B. CROTTY, M.Sc., M.B., M.R.C.P.I. 
Mayo Clinic Proceedings 
Volume 67, Issue 4, Pages (April 1992)
DOI: /S (12)
Copyright © 1992 Mayo Foundation for Medical Education and Research Terms and Conditions

2. Fig. 1
Computed tomographic scans of thorax before (A) and after (B) administration of chemotherapy and radiation therapy for small-cell carcinoma in right upper lobe of lung. Subsequent scan (C) shows presence of new nodule, which was identified as a malignant ependymoma on pathologic examination.
Mayo Clinic Proceedings  , DOI: ( /S (12) )
Copyright © 1992 Mayo Foundation for Medical Education and Research Terms and Conditions

3. Fig. 2
Photomicrograph of metastatic small-cell carcinoma within a supraclavicular lymph node. (Hematoxylin-eosin; original magnification, ×400.)
Mayo Clinic Proceedings  , DOI: ( /S (12) )
Copyright © 1992 Mayo Foundation for Medical Education and Research Terms and Conditions

4. Fig. 3
Computed tomographic scans of head of study patient, showing no abnormality at time of detection of pulmonary ependymoma (A) but large left-sided intracerebral hemorrhage 6 months later (B).
Mayo Clinic Proceedings  , DOI: ( /S (12) )
Copyright © 1992 Mayo Foundation for Medical Education and Research Terms and Conditions

5. Fig. 4
Photomicrograph of spindle cells and oval nuclei arranged in ill-defined fascicles. (Hematoxylin-eosin; original magnification, ×250.)
Mayo Clinic Proceedings  , DOI: ( /S (12) )
Copyright © 1992 Mayo Foundation for Medical Education and Research Terms and Conditions

6. Fig. 5
Photomicrograph of perivascular pseudorosette. Note fibrillary appearance of cytoplasm. (Hematoxylin-eosin; original magnification, ×250.)
Mayo Clinic Proceedings  , DOI: ( /S (12) )
Copyright © 1992 Mayo Foundation for Medical Education and Research Terms and Conditions

7. Fig. 6
Photomicrograph of pronounced pleomorphic and, occasionally, multinucleated cells. (Hematoxylin-eosin; original magnification, ×250.)
Mayo Clinic Proceedings  , DOI: ( /S (12) )
Copyright © 1992 Mayo Foundation for Medical Education and Research Terms and Conditions

8. Fig. 7
Photomicrograph of immunostaining with glial fibrillary acidic protein, demonstrating strong cytoplasmic reactivity (arrows). (Original magnification, ×400.)
Mayo Clinic Proceedings  , DOI: ( /S (12) )
Copyright © 1992 Mayo Foundation for Medical Education and Research Terms and Conditions

9. Fig. 8
Electron micrographs, showing cytoplasmic filaments (A) and intercellular junction (B, arrow). (Original magnification, ×21,000 and ×68,000, respectively.)
Mayo Clinic Proceedings  , DOI: ( /S (12) )
Copyright © 1992 Mayo Foundation for Medical Education and Research Terms and Conditions