Retroperitoneal teratoma

Case contributed by Melbourne Uni Radiology Masters


Abdominal discomfort.

Patient Data

Age: 29-year-old
Gender: Male

CT Abdomen and pelvis

There is a very large retroperitoneal tumour that contains fat, and other germ cell layers that constitute a teratomatous lesion.

No metastases are seen.

Testes ultrasound is recommended.

Case Discussion

This case was pathologically proven as a teratoma.

This kind of tumour shows mixed dermal elements derived from the three germ cell layers.

The majority of teratomas present congenitally in the sacrococcygeal region, within the ovaries of adolescent females and the testes in young men. 

Extragonadal teratomas tend to occur in midline structures in the anterior mediastinum, retroperitoneum, sacrococcygeal region, and pineal gland.

Retroperitoneal teratomas have two incidence peaks: first six months of life and in early adulthood.

There is a 25% chance of malignancy.


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Case information

rID: 38283
Published: 15th Jul 2015
Last edited: 11th Mar 2018
Tag: rmh
Inclusion in quiz mode: Included

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