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Establishment of Cancer Stem Cell Cultures from Human Conventional Osteosarcoma

Establishment of Cancer Stem Cell Cultures from Human Conventional Osteosarcoma

Published on: October 14, 2016

Extraskeletal cutaneous chondroblastic osteosarcoma: a case report.

Javier Salamanca¹, Patricia Dhimes, Fernando Pinedo

¹Department of Pathology, Fundación Hospital de Alcorcón, Madrid, Spain. fjsalamanca@fhalcorcon.es

Journal of Cutaneous Pathology

|January 15, 2008

Summary

This case report details a rare cutaneous chondroblastic osteosarcoma, a malignant soft tissue tumor. Early diagnosis via skin biopsy is crucial, even without visible bone formation, for effective treatment of this extraskeletal neoplasm.

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Area of Science:

Oncology
Dermatopathology
Surgical Pathology

Background:

Extraskeletal osteosarcoma (ESOS) is a rare malignant neoplasm typically found in deep soft tissues.
Cutaneous involvement is exceptionally uncommon, posing diagnostic challenges.

Observation:

A 60-year-old male presented with a rapidly growing cutaneous mass on his right lower thigh.
Initial incisional biopsy revealed a dermal and subcutaneous neoplasm with high-grade chondroid features, atypia, and mitotic activity, but no osteoid or bone.

Findings:

Histopathology confirmed a high-grade chondroblastic osteosarcoma, characterized by a predominant chondroid matrix with focal fibrosarcomatous areas, giant cells, and eventual bone/osteoid formation.
Imaging excluded osseous or other primary tumor origins.

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The patient developed pulmonary metastases post-chemotherapy.

Implications:

This case highlights the importance of considering cutaneous chondroblastic osteosarcoma in the differential diagnosis of malignant skin tumors, even with an initial absence of osteoid.
Accurate diagnosis via incisional biopsy is critical for appropriate management of this rare extraskeletal neoplasm.
The presence of pulmonary metastases underscores the aggressive nature of this tumor subtype.