Cystic adenomyosis is a rare variant of adenomyosis and is believed to the result of repeated focal hemorrhages resulting in cystic spaces filled with altered blood products.
MRI is the most sensitive and specific imaging modality for this diagnosis and will demonstrate cystic regions with variable signal on both T1 and T2 weighted images, on account of blood products of various ages (see aging blood on MRI) 1.
For a general discussion, please refer to the article on adenomyosis.
Considerations on MRI include:
- leiomyoma with haemorrhhagic degeneration
- adenomyotic cyst: there can be some overlap with cystic adenomyosis
- 1. Hamm B, Forstner R, Beinder E. MRI and CT of the female pelvis. Springer Verlag. (2007) ISBN:3540222898. Read it at Google Books - Find it at Amazon
- 2. Troiano RN, Flynn SD, Mccarthy S. Cystic adenomyosis of the uterus: MRI. J Magn Reson Imaging. 8 (6): 1198-202. - Pubmed citation
- 3. Imaoka I, Kaji Y, Kobashi Y et-al. Cystic adenomyosis with florid glandular differentiation mimicking ovarian malignancy. Br J Radiol. 2005;78 (930): 558-61. doi:10.1259/bjr/82283833 - Pubmed citation