Castleman's disease of the mesorectum: report of a case.
Castleman's disease is a benign lymphoid proliferative disorder, which most commonly presents as a solitary mass in the mediastinum, although extrathoracic sites have been reported in the neck, axilla, pelvis, mesentery, pancreas, and retroperitoneum. We report a case of asymptomatic, isolated Castleman's disease in the mesorectum, which is extremely rare. The patient was a 34-year-old woman who underwent investigations for vaginal spotting. A presacral mass was located on the left side of the rectum, 10 cm from the anal verge. Contrast-enhanced computed tomography showed a large, well-demarcated, strongly enhancing mass with internal radiating septa in the mesorectum. The mass was well circumscribed and isointense to muscle on T1-weighted magnetic resonance imaging, appearing as a slightly hyperintense mass on T2-weighted imaging. We performed laparoscopic mesorectal mass excision, and histological examination revealed features typical of the hyaline-vascular type of Castleman's disease. Thus, when a mesorectal mass is being investigated, Castleman's disease should be considered in the differential diagnosis.
Center for Colorectal Cancer, National Cancer Center, 111 Jungbalsan-ro, Ilsandong-gu, Goyang-si, Gyeonggi-do, Republic of Korea.
Mi Ri
MR
Hwang
Hee Jin
HJ
Chang
Min Ju
MJ
Kim
Guh Jung
GJ
Seo
Sang Bum
SB
Yoo
Ji Won
JW
Park
Hyo Seong
HS
Choi
Jae Hwan
JH
Oh
D000328:Adult; D005871:Castleman Disease / Q000175:diagnosis* / Q000473:pathology; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D012002:Rectal Diseases / Q000175:diagnosis* / Q000473:pathology
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