1. Parosteal Osteosarcoma From a Rib
Aminah Jatoi, Maria L Garcia-Moliner, Benedict D.T Daly 
The Annals of Thoracic Surgery 
Volume 65, Issue 1, Pages (January 1998)
DOI: /S (97)

2. Fig. 1
Chest roentgenogram showing a sclerotic mass attached to the inferior base of the fifth rib.
The Annals of Thoracic Surgery  , DOI: ( /S (97) )

3. Fig. 2
(A) Resected rib specimen. (B) Histologically, the parosteal osteosarcoma demonstrates parallel, sweeping stroma. Nucleoli are relatively small and mitoses rare, both of which characterize this Broder’s grade I tumor. (Hematoxylin and eosin: ×1,000 before 50% reduction.)
The Annals of Thoracic Surgery  , DOI: ( /S (97) )