1. Dysphagia caused by a fetus-in-fetu in a 27-year-old man
Malek G Massad, MD, Lawrence Kong, MD, Enrico Benedetti, MD, Daniel Resnick, MD, Luna Ghosh, MD, Alexander S Geha, MD, Herand Abcarian, MD 
The Annals of Thoracic Surgery 
Volume 71, Issue 4, Pages (April 2001)
DOI: /S (00)

2. Fig 1
Plain radiogram of the chest and abdomen shows a retrocardiac mass with elevation of the right hemidiaphragm and superior displacement and effacement of the carina. An ossified density, the shape of a mandible with four distinct molar teeth contained within a cavity with a calcific rim, was noted in the right upper quadrant.
The Annals of Thoracic Surgery  , DOI: ( /S (00) )

3. Fig 2
An upper gastrointestinal series shows a narrowed, laterally displaced distal esophagus and stomach with narrowing at the gastroesophageal junction.
The Annals of Thoracic Surgery  , DOI: ( /S (00) )

4. Fig 3
CT scan of the abdomen shows a large upper retroperitoneal mass measuring 22×18×14 with calcified rim. Multiple densities within the mass represent fat, fluid, soft tissue and bone.
The Annals of Thoracic Surgery  , DOI: ( /S (00) )

5. Fig 4
Fetus-in-fetu.
The Annals of Thoracic Surgery  , DOI: ( /S (00) )