Primary carcinoid tumor in a retroperitoneal mature teratoma: Report of a case

Koji Shindo, Junji Ueda, Taro Toubo, Masafumi Nakamura, Yoshinao Oda, Toru Eguchi, Masao Tanaka

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Primary retroperitoneal teratoma in an adult is rare, as is the occurrence of a malignant tumor within a mature teratoma, known as malignant transformation. A 24-year-old woman was admitted to our hospital for investigation of an abdominal mass. Computed tomography and magnetic resonance imaging revealed a multilocular mass in the right upper abdomen. The tumor consisted of fat, soft tissue, and bone, with a slightly enhanced solid component. The tumor was diagnosed preoperatively as a retroperitoneal mature teratoma with an immature component, and excised. Histologically, it was composed mainly of mature fat, soft tissue, and bone, accompanied by a solid component of prostate-like tissue. In addition, a latent carcinoid tumor was recognized in the middle of the tumor. The tumor was finally diagnosed as a primary carcinoid tumor within the retroperitoneal mature teratoma. The patient has been followed-up for 24 months since her operation without any evidence of recurrence. We report this case to highlight the possibility of malignant transformation in adult retroperitoneal teratoma, even when the preoperative diagnosis is benign mature teratoma.

Original languageEnglish
Pages (from-to)694-697
Number of pages4
JournalSurgery Today
Volume43
Issue number6
DOIs
Publication statusPublished - Jun 1 2013

Fingerprint

Teratoma
Carcinoid Tumor
Neoplasms
Fats
Bone and Bones
Abdomen
Prostate
Tomography
Magnetic Resonance Imaging
Recurrence

All Science Journal Classification (ASJC) codes

  • Surgery

Cite this

Primary carcinoid tumor in a retroperitoneal mature teratoma : Report of a case. / Shindo, Koji; Ueda, Junji; Toubo, Taro; Nakamura, Masafumi; Oda, Yoshinao; Eguchi, Toru; Tanaka, Masao.

In: Surgery Today, Vol. 43, No. 6, 01.06.2013, p. 694-697.

Research output: Contribution to journalArticle

Shindo, Koji ; Ueda, Junji ; Toubo, Taro ; Nakamura, Masafumi ; Oda, Yoshinao ; Eguchi, Toru ; Tanaka, Masao. / Primary carcinoid tumor in a retroperitoneal mature teratoma : Report of a case. In: Surgery Today. 2013 ; Vol. 43, No. 6. pp. 694-697.
@article{a227d6e76f924b27b0dd9785aed012f9,
title = "Primary carcinoid tumor in a retroperitoneal mature teratoma: Report of a case",
abstract = "Primary retroperitoneal teratoma in an adult is rare, as is the occurrence of a malignant tumor within a mature teratoma, known as malignant transformation. A 24-year-old woman was admitted to our hospital for investigation of an abdominal mass. Computed tomography and magnetic resonance imaging revealed a multilocular mass in the right upper abdomen. The tumor consisted of fat, soft tissue, and bone, with a slightly enhanced solid component. The tumor was diagnosed preoperatively as a retroperitoneal mature teratoma with an immature component, and excised. Histologically, it was composed mainly of mature fat, soft tissue, and bone, accompanied by a solid component of prostate-like tissue. In addition, a latent carcinoid tumor was recognized in the middle of the tumor. The tumor was finally diagnosed as a primary carcinoid tumor within the retroperitoneal mature teratoma. The patient has been followed-up for 24 months since her operation without any evidence of recurrence. We report this case to highlight the possibility of malignant transformation in adult retroperitoneal teratoma, even when the preoperative diagnosis is benign mature teratoma.",
author = "Koji Shindo and Junji Ueda and Taro Toubo and Masafumi Nakamura and Yoshinao Oda and Toru Eguchi and Masao Tanaka",
year = "2013",
month = "6",
day = "1",
doi = "10.1007/s00595-012-0366-7",
language = "English",
volume = "43",
pages = "694--697",
journal = "Surgery Today",
issn = "0941-1291",
publisher = "Springer Japan",
number = "6",

}

TY - JOUR

T1 - Primary carcinoid tumor in a retroperitoneal mature teratoma

T2 - Report of a case

AU - Shindo, Koji

AU - Ueda, Junji

AU - Toubo, Taro

AU - Nakamura, Masafumi

AU - Oda, Yoshinao

AU - Eguchi, Toru

AU - Tanaka, Masao

PY - 2013/6/1

Y1 - 2013/6/1

N2 - Primary retroperitoneal teratoma in an adult is rare, as is the occurrence of a malignant tumor within a mature teratoma, known as malignant transformation. A 24-year-old woman was admitted to our hospital for investigation of an abdominal mass. Computed tomography and magnetic resonance imaging revealed a multilocular mass in the right upper abdomen. The tumor consisted of fat, soft tissue, and bone, with a slightly enhanced solid component. The tumor was diagnosed preoperatively as a retroperitoneal mature teratoma with an immature component, and excised. Histologically, it was composed mainly of mature fat, soft tissue, and bone, accompanied by a solid component of prostate-like tissue. In addition, a latent carcinoid tumor was recognized in the middle of the tumor. The tumor was finally diagnosed as a primary carcinoid tumor within the retroperitoneal mature teratoma. The patient has been followed-up for 24 months since her operation without any evidence of recurrence. We report this case to highlight the possibility of malignant transformation in adult retroperitoneal teratoma, even when the preoperative diagnosis is benign mature teratoma.

AB - Primary retroperitoneal teratoma in an adult is rare, as is the occurrence of a malignant tumor within a mature teratoma, known as malignant transformation. A 24-year-old woman was admitted to our hospital for investigation of an abdominal mass. Computed tomography and magnetic resonance imaging revealed a multilocular mass in the right upper abdomen. The tumor consisted of fat, soft tissue, and bone, with a slightly enhanced solid component. The tumor was diagnosed preoperatively as a retroperitoneal mature teratoma with an immature component, and excised. Histologically, it was composed mainly of mature fat, soft tissue, and bone, accompanied by a solid component of prostate-like tissue. In addition, a latent carcinoid tumor was recognized in the middle of the tumor. The tumor was finally diagnosed as a primary carcinoid tumor within the retroperitoneal mature teratoma. The patient has been followed-up for 24 months since her operation without any evidence of recurrence. We report this case to highlight the possibility of malignant transformation in adult retroperitoneal teratoma, even when the preoperative diagnosis is benign mature teratoma.

UR - http://www.scopus.com/inward/record.url?scp=84878013574&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84878013574&partnerID=8YFLogxK

U2 - 10.1007/s00595-012-0366-7

DO - 10.1007/s00595-012-0366-7

M3 - Article

C2 - 23052753

AN - SCOPUS:84878013574

VL - 43

SP - 694

EP - 697

JO - Surgery Today

JF - Surgery Today

SN - 0941-1291

IS - 6

ER -