Obstet Gynecol Sci.  2017 Nov;60(6):598-601. 10.5468/ogs.2017.60.6.598.

A retroperitoneal dedifferentiated liposarcoma mimicking an ovarian tumor

• Kim H
• Jeong T
• Lee Y
• Kim G
• Hong S
• Beck S
• Mun J
• Kim K
• Ju M

• KMID: 2418363
• DOI: http://doi.org/10.5468/ogs.2017.60.6.598

Abstract

A 74-year-old postmenopausal woman visited our gynecology clinic complaining of a palpable abdominal mass. Physical and radiological evaluation indicated that the mass exhibited features of a left ovarian neoplasm showing heterogeneous enhancement. Surgical resection was performed to confirm this suspicion. During surgery, a mass was observed only in the left ovary with no invasive growth, but adhesions to the surrounding peritoneum were seen. Given the patient's age, large mass size, and accompanying uterine myoma and right ovarian cyst, total abdominal hysterectomy with bilateral salpingo-oophorectomy was performed. The final pathologic diagnosis was dedifferentiated liposarcoma. The liposarcoma was suspected to originate from retroperitoneal adipose tissue rather than the ovary. Radiotherapy was planned if a gross lesion indicating recurrence followed 6 months later. This case required a considerable multi-disciplinary approach for diagnosis and treatment because of its ambiguous clinical and radiological findings.

Keyword

Retroperitoneal neoplasms; Liposarcoma

MeSH Terms

Aged
Diagnosis
Female
Gynecology
Humans
Hysterectomy
Intra-Abdominal Fat
Leiomyoma
Liposarcoma*
Ovarian Cysts
Ovarian Neoplasms
Ovary
Peritoneum
Radiotherapy
Recurrence
Retroperitoneal Neoplasms

Figure

• 

  Fig. 1 Intra-pelvic mass mimicking an ovarian tumor with cystic and solid-enhancing internal features.

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  Fig. 2 The liposarcoma was grossly encapsulated without the ruptured sign and tightly adjacent to ovarian tissue.

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