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Related Experiment Videos

Mesenteric extraskeletal osteosarcoma with telangiectatic features: a case report.

Kyung Hwa Lee1, Jae Kyoon Joo, Dong Yi Kim

  • 1Department of Pathology, Chonnam National University Medical School, Hak-dong, Dong-gu, Gwangju, Republic of Korea. azimmed@hanmail.net <azimmed@hanmail.net>

BMC Cancer
|May 17, 2007
PubMed
Summary
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This report details a rare case of extraskeletal osteosarcoma with telangiectatic features in the mesentery. The aggressive tumor recurred rapidly, highlighting the need for awareness of this uncommon entity.

Area of Science:

  • Oncology
  • Pathology
  • Surgical Oncology

Background:

  • Extraskeletal osteosarcoma (ESOS) is a rare malignant mesenchymal tumor predominantly affecting extremities.
  • Mesenteric ESOS is exceptionally rare, with only two prior documented cases.
  • This study presents a unique case of telangiectatic extraskeletal osteosarcoma arising in the mesentery.

Observation:

  • A 67-year-old male presented with a 1-month history of blood-tinged stool.
  • Colonoscopy revealed a colonic wall mass; CT showed a large, complex abdominal mass.
  • Surgical resection yielded a tumor with cystic spaces, hematomas, and necrotic debris.

Findings:

  • Histopathology confirmed osteosarcoma with osteoid formation and atypical cells lining blood-filled spaces.

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  • The tumor exhibited telangiectatic features, characterized by prominent vascular spaces.
  • Despite curative resection and chemotherapy, the patient experienced rapid recurrence with peritoneal and lung metastases.

    • Implications:

    • The biologic behavior of mesenteric extraskeletal osteosarcoma requires further investigation due to its rarity.
    • Telangiectatic extraskeletal osteosarcoma is an uncommon but potentially aggressive subtype.
    • Recognition of this entity is crucial due to its association with poor prognosis and potential for fatal outcomes.