Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
6
pubmed:dateCreated
2010-12-14
pubmed:abstractText
A 54-year-old man presented with pain on defecation and rectal bleeding. Colonoscopy revealed a submucosal tumor extending from the lower rectum to the upper rim of the anal canal, which compressed the rectal wall inward by two thirds of its circumference. Magnetic resonance images demonstrated a 70 × 80-mm unilocular cystic mass with a solid portion in the periphery in the retrorectal space, which displaced the rectum anterolaterally. The peripheral solid portion was hypointense on T2-weighted images and not hyperintense on diffusion-weighted images, suggesting low cellularity of the lesion. Cytological examination of the clear and serous fluid obtained by transrectal biopsy showed the presence of normal columnar and squamous epithelial cells and the absence of malignant cells. Therefore, the cystic retrorectal mass was presumed to be tailgut cysts rather than gastrointestinal stromal tumors (GISTs). The mass and rectum were extirpated en bloc with an adequate surgical margin by laparoscopic intersphincteric resection. Pathologically, spindle tumor cells proliferated with nuclear palisading and were strongly immunopositive for c-kit, leading to a final diagnosis of rectal GIST. There are no reports describing a huge, cystic rectal GIST arising in the retrorectal space, which should be considered in the differential diagnosis of cystic retrorectal lesions.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:status
MEDLINE
pubmed:month
Dec
pubmed:issn
1437-7772
pubmed:author
pubmed:issnType
Electronic
pubmed:volume
15
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
601-7
pubmed:dateRevised
2011-9-13
pubmed:meshHeading
pubmed:year
2010
pubmed:articleTitle
A large cystic gastrointestinal stromal tumor of the rectum in the retrorectal space.
pubmed:affiliation
Department of Surgery, Graduate School of Medicine, Kyoto University, 54 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto 606-8507, Japan.
pubmed:publicationType
Journal Article, Case Reports, Research Support, Non-U.S. Gov't