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Inflammatory myofibroblastic tumors arising from pancreas head and peri-splenic area mimicking a malignancy

Jang EJ, Kim KW, Kang SH, Pak MG, Han SH

Inflammatory myofibroblastic tumors (IMTs) are a rare chronic inflammatory disease with unclear pathogenesis and pathological features that are not those of a malignant tumor. It is difficult to differentially diagnose...
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MRI Finding of Retroperitoneal Desmoplastic Small Round Cell Tumor with Hepatic Metastasis and Portal Vein Thrombosis: a Case Report

Kim YR, Lee YH, Choi KH

Desmoplastic small round cell tumor (DSRCT) is a rare and aggressive malignancy common in young male patient. Typical imaging features of DSRCT include multiple soft tissue masses in the peritoneal...
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Primary Extragastrointestinal Stromal Tumor of Retroperitoneum: Poor Response to Tyrosine Kinase Inhibitor

Lee MY

Gastrointestinal stromal tumors (GIST) are the most common sarcomas arising in the gastrointestinal tract. Stromal tumors arising outside the gastrointestinal tract are known as extragastrointestinal stromal tumors (EGIST). EGISTs may...
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Retroperitoneal nongestational choriocarcinoma in a 25-year-old woman

Park SY, Lee DE, Park HJ, Kim KC, Kim YH

Choriocarcinoma is a highly invasive and metastatic neoplasm which arises in women of reproductive age. It can be either gestational or nongestational in origin, but the latter form is very...
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Multidetector CT and MR Imaging Findings of Renal Vein Leiomyosarcoma with Both Extraluminal and Intraluminal Components: A Case Report

Hong H, Ku YM, Seo KJ, Park SC, Lee SL

Leiomyosarcomas of the large veins are uncommon tumors commonly originating from the inferior vena cava. A primary leiomyosarcoma arising from the renal vein is very uncommon. Herein, we describe the...
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Incidentally detected ganglioneuroma during pregnancy: A case report

Kim JO, Kim YH, Kim YH, Kim JW, Song TB

Retroperitoneal ganglioneuroma is a rare benign tumor, which is included in the neuroblastomas group. It can occur anywhere along the peripheral autonomic ganglion sites, and the tumor is often incidentally...
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Castleman Disease in the Kidney and Retroperitoneum Mimicking Renal Cell Carcinoma with Retroperitoneal Lymphadenopathy: A Case Report

Ko HS, Woo JY, Hong HS, Jung AY, Yang I, Lee Y

Castleman disease, or angiofollicular lymph node hyperplasia, is a fairly rare benign tumor of lymphoid origin with unknown etiology. Castleman disease arises mostly in the mediastinum, and some cases of...
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Extra-Gastrointestinal Stromal Tumor of Retroperitoneal Origin: A Case Report

Choi SJ, Kim HS, Park Y, Choi HY

Extragastrointestinal stromal tumors (EGIST) are relatively rare, and cases originating in the retroperitoneum even rarer. We report a 60-year-old woman who presented with an EGIST originating in the retroperitoneum. Computed...
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Laparoscopic Resection of a Bronchogenic Cyst Presenting as a Retroperitoneal Tumor

Kim KS, Jo YJ, Hong YO, Lee BS, Kim DH

A bronchogenic cyst is regarded as a developmental abnormality of the primitive foregut, which typically occurs in the mediastinum. The cystis normally diagnosed in relation to respiratory problems or recurrent...
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Congenital Hemangiopericytoma in the Retroperitoneum: A Case Report in a Newborn

Choo YK, Cho HS, Moon SB, Kang G, Lee HS

  • KMID: 2280846
  • Korean J Perinatol.
  • 2011 Dec;22(4):362-366.
Hemangiopericytoma is a rare vascular tumor that usually occurs in adults. The tumor is believed to originate from pericytes that are closely related to the capillary walls. Congenital hemangiopericytoma is...
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A case of retroperitoneal ectopic pregnancy of obturator fossa

You JY, Lee YR, Oak SA, Park JH, Lee EH

Ectopic pregnancy occurs in approximately 1.5 to 2.0% of pregnancies and accounts for 6% of all maternal deaths. Nearly all ectopic pregnancies are implanted in the fallopian tube. However, they...
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A case of secondary postpartum hemorrhage with shock followed by rupture of progressive retroperitoneal hematoma through left upper vaginal wall

Park M, Han SS

Puerperal genital hematomas are uncommon causes of postpartum hemorrhage but can be a cause of serious morbidity and even maternal death. When puerperal genital hematomas are clinically occult despite significant...
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A case of laparoscopic treatment of the retroperitoneal ectopic pregnancy

Park BR, Lee NH, Ann CO, Shim HJ, Jo EK, Kim YS, Bae DH

Ectopic pregnancy accounts for approximately 2% of all pregnancies and is the most common cause of pregnancy-related mortality in the first trimester. Initial evaluation consists of beta-hCG and pelvic ultrasonography....
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A case of spontaneous retroperitoneal hemamtoma in pregnant woman

Cho SS, Kim YH, Kim JW, Cho HY, Song TB

Spontaneous retroperitoneal hematoma in pregnant woman is extremely rare entity which has not been reported. Although this condition can lead to lethal situation, there is no definite diagnostic tool and...
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Malignant Solitary Fibrous Tumor of Retroperitoneum Mimicking Gastric Submucosal Tumor

Bae JM, Kim SW, Kim SW, Song SK

Solitary fibrous tumors (SFTs) are an uncommon neoplasm characterized by the proliferation of spindle cells. The diagnostic criteria of malignant solitary fibrous tumors (MSFTs) include high cellularity, high mitotic activity...
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A Case of Large Retroperitoneal Lipoma Mimicking Liposarcoma

Lee KR, Seo TJ, Cho JH, Kim HI, Hur YH, Cho SB, Lee WS, Joo YE

Lipomas are the most common benign tumors of adipose tissue among adults. Lipomas can occur almost anywhere in the trunk, extremities, mediastinum, and pelvis, but retroperitoneal lipomas are extremely rare....
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Laparoscopic Resection of a 12 cm Sized Retroperitoneal Schwannoma Adjacent to Retroperitoneal Vital Vessels: Are Large Retroperitoneal Schwannomas Not Suitable for the Laparoscopic Approach?

Cho YH, Kim DH, Lee SH, Son GM, Lee SH, Kim HY, Kim GH, Park DY, Kim S

There are a lot of advantages to laparoscopic surgery, including early recovery, less postoperative pain, better cosmesis, shorter hospital stay and an early return to normal activities because of its...
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Dedifferentiated Liposarcoma of the Retroperitoneum

Kim ES, Jang SH, Park HC, Jung EH, Moon GB

  • KMID: 2165979
  • Cancer Res Treat.
  • 2010 Mar;42(1):57-60.
A dedifferentiated liposarcoma of the retroperitoneum is an extremely rare tumor. A 51-year old man was admitted to our department because a retroperitoneal mass was seen on abdominal computed tomography...
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A case of successfully resected retroperitoneal hemangiopericytoma

Choi IJ, Han MS, Cha MS

  • KMID: 2273747
  • Korean J Obstet Gynecol.
  • 2009 Jul;52(7):771-775.
Hemangiopericytoma is a rare mesenchymal neoplasm, accounting for about 1% of vascular tumor. Hemangiopericytoma is known to be derived from the vascular pericyte and occurs most commonly lower extremities, pelvis...
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A case of pelvic retroperitoneal benign schwannoma presenting as a gynecologic malignancy with pulmonary thromboembolism

Jeong EY, Kim JS, Nam KH, Bae DH

  • KMID: 1474970
  • Korean J Obstet Gynecol.
  • 2009 Jun;52(6):655-660.
Retroperitoneal schwannomas are rare tumors difficult to diagnose preoperatively. It may originate at the cranial nerves or nerves of the upper extremities, but origin along the nerves of the retroperitoneal...
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