Question:

Which of the following MR imaging features of adenoma malignum are true? (More than one correct).
1. Enhancement after IV gadolinium is a characteristic feature of adenoma malignum.
2. Typical appearance is of a large multiloculated mixed cystic/solid mass in the deep cervical stroma.
3. The cystic components of adenoma malignum are typically T1 hypertintense.
4. Some cases of adenoma malignum may present as ill defined or hazy regions of increased T2 signal within the deep cervical stroma.
5. Mass typically demonstrates signal loss with fat-saturation techniques.





Answer:

The correct answers for the question "Which of the following MR imaging features of adenoma malignum are true? (More than one correct)." are:

2. Typical appearance is of a large multiloculated mixed cystic/solid mass in the deep cervical stroma.

4. Some cases of adenoma malignum may present as ill defined or hazy regions of increased T2 signal within the deep cervical stroma.



Explanation
The typical MRI appearance of adenoma malignum is a of a large multiloculated cystic/solid mass in the deep cervical stroma.  However, some cases may present as ill defined or hazy regions of increased T2 signal within the deep cervical stroma without well defined cystic components.   Cystic components are typically low signal on T1 and high signal on T2.  Enhancement of solid components may or may not be present.  Adenoma malignum is not typically a fat containing lesion.



From the manuscript:
Adenoma Malignum Detected on a Trauma CT
Radiology Case. 2013 Apr; 7(4):22-28


This article belongs to the OB/GYN section.




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From the manuscript

Adenoma Malignum Detected on a Trauma CT

Free full text article: Adenoma Malignum Detected on a Trauma CT

Abstract
Adenoma malignum is a rare subtype of cervical adenocarcinoma. Clinical presentation is variable with watery vaginal discharge being the most commonly associated finding. We report a case of adenoma malignum incidentally detected on pelvic computed tomography (CT) performed for a trauma patient. The cervical mass was further characterized by magnetic resonance (MR) imaging and remained compatible with adenoma malignum. Local cervical biopsy was suggestive of the diagnosis which was subsequently confirmed by gross surgical pathology. We briefly discuss adenoma malignum with particular attention to CT and MR imaging features.






References



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