ABSTRACT
Ocular adnexal lymphoma accounts for approximately 1%-2% of non-Hodgkin lymphomas and 8% of extranodal lymphomas. Lacrimal gland lymphoma, especially bilateral lacrimal gland lymphoma, is rare, and imaging is often utilized to differentiate lacrimal lymphoma from other types of masses that involve the lacrimal gland and the fossa. We describe a 74-year-old male patient presenting with bilateral eye proptosis, lachrymose without pain, and no changes in eyesight. Brain-orbit magnetic resonance imaging revealed bilateral lacrimal fossa masses with regular contours, moderate enhancement, and restriction on diffusion imaging, consistent with a lymphoma diagnosis, which was confirmed by histopathological results. Positron emission tomography-computed tomography was used to determine lymphoma grading. MRI, especially diffusion imaging, can be useful for guiding clinicians in the diagnosis and differentiation of lacrimal gland lymphoma from other lesions.
ABSTRACT
Juvenile granulosa cell tumor (GCT) is a rare ovarian tumor in children, presenting with a multiloculated cystic pattern and irregular wall-thickening on imaging and serous cystadenoma (SCA) is also another rare benign cystic ovarian tumor in children. The appearance of two uncommon types of ovarian tumors on both sides in children is extremely rare. We report the case of a 4-year-old female presenting with symptoms of precocious puberty and diagnosed with juvenile GCT on the left ovary after surgical resection. However, during follow-up 1 year after GCT resection, she presented with another multiloculated cystic mass in the right ovary, and diagnosed as SCA after surgical resection and histopathologic evaluations. The appearance of cystic ovarian tumor after primarily GCT resection need to differentiate between the recurrence of the primarily GCT and other cystic ovarian tumors although it is very uncommon. Furthermore, the imaging features played a key role in the differential diagnosis between benign and malignant ovarian tumors.
