Question:

Which of the following statements is false in regard to gastric teratoma?
1. Teratomas are most frequent in males.
2. Gastric teratomas usually grow into the gastric cavity.
3. Most extragonadal teratomas are sacro-coccygeal.
4. Teratomas rarely need radiation therapy.
5. Differential diagnosis of a cystic abdominal mass includes Wilms tumor.





Answer:

The correct answer for the question "Which of the following statements is false in regard to gastric teratoma?" is:

2. Gastric teratomas usually grow into the gastric cavity.



Explanation
1. Teratomas are rarely seen in girls. [Male predominance is notorious in children, however there are 6 reported cases in girls].

2. Most gastric teratomas present exogastric growth. [They could be pedunculated and have exogastric growths in up to 70% of cases ].

3.  Sacro-coccygeal and mediastinal locations are the most frequent sites for extragonadal teratomas. [Most cases of extragonadal teratomas occurs in the saccro-coccygeal region and mediastinum as well.  Less than 1% are found in abdominal organs such as liver, kidney, vagina and stomach].

4. Usually surgery is enough treatment. [Surgery has been enough treatment, with no adjuvant chemotherapy or radiation therapy needed}.

5. Teratoma and Wilms tumors are considered in the differential diagnosis of cystic abdominal masses. [Differential diagnosis of cystic abdominal masses include Wilms tumor, angiomyolipoma, mesenteric lymphangioma and congenital cysts].



From the manuscript:
Pediatric Gastric Teratoma
Radiology Case. 2010 Oct; 4(10):6-13


This article belongs to the Pediatric section.




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From the manuscript

Pediatric Gastric Teratoma

Free full text article: Pediatric Gastric Teratoma

Abstract
Neoplasms from germ cell origin are a heterogeneous group of tumors rarely seen in the pediatric population, teratoma is the most frequent among them. They can occur in either gonadal or extragonadal locations. Extragonadal teratoma arising from abdominal viscera is very unusual. There are less than a hundred reported cases of gastric teratoma in the worldwide literature. Since the occurrence of this pathology in the pediatric age group is quite rare, we describe a case of a teratoma located in the lesser curvature of the stomach in an infant with an emphasis in radiologic-pathologic correlation.






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