Total for the last 12 months
number of access : ?
number of downloads : ?
ID 118525
Title Alternative
Difficulty in diagnosis of black pigmentation in the peritoneal cavity : A case report
Author
Shirakawa, Aya Tokushima University
Murayama, Misaki Tokushima University
Imaizumi, Junki Tokushima University
Keywords
peritoneal pigmentation
melanoma
india ink
Content Type
Journal Article
Description
The occurrence of black pigmentation in the peritoneal cavity is rare, and its rapid clinical diagnosis may be difficult. Here, we report a case with pigmented peritoneal deposits diagnosed via a histopathological examination at postoperative period. A 74-year-old woman was diagnosed with stage 2 pelvic organ prolapse on the POP-Q system, and planned to undergo a laparoscopic sacrocolpopexy. She had an obstetric history of two uncomplicated vaginal births, and a medical history of colon cancer. During the surgery, variously sized, irregularly shaped and partially swollen black pigments were observed mainly in the small pelvic cavity. Because malignant melanoma dissemination was suspected by macroscopic findings, sampling tissues were submitted to the rapid histopathological examination with frozen sections. However, the histopathological examination could not rule out malignancy because of the presence of cell nests similar to melanocytes with large nucleoli. Thereafter, to prevent the spread of the suspected cancer cells, the surgical procedure was switched to a vaginal approach. No malignant lesions were observed in a whole-body examination performed after the operation. Additionally, immunohistochemistry showed no evidence of malignancy or atypia in black pigmented tissues. When we checked the colon cancer operation records and pictures at 5 years ago, it was revealed that the black pigments were markings painted during this surgery. The present case serves as a reminder for differential diagnosis of black pigments in the abdominal cavity.
Journal Title
Japanese Journal of Gynecologic and Obstetric Endoscopy
ISSN
18845746
18849938
NCID
AN10068110
Publisher
日本産科婦人科内視鏡学会
Volume
38
Issue
2
Start Page
157
End Page
161
Published Date
2022
EDB ID
DOI (Published Version)
URL ( Publisher's Version )
FullText File
language
jpn
TextVersion
Publisher
departments
University Hospital
Medical Sciences