Fetiform teratoma (homunculus) is a rare but distinct entity, characterized by presence of more organoid differentiation than the classical teratoma but not enough to classify as fetus-in-fetu. Presence of rudimentary limbs in presence/absence of axial skeleton is often reported as an important differentiating feature. Sacrococcygeal location has been reported in a few case reports but in neonates only. This is a rare case of sacrococcygeal fetiform teratoma (Altman type 1) in an 11-year-old girl presenting as a gluteal mass.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3693311 | PMC |
| http://dx.doi.org/10.1007/s12262-012-0703-5 | DOI Listing |
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