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[Pleomorphic hyalinizing angiectasic soft-tissue tumor. Description of a case]
C Gallo1, B Murer, F Roncaroli
1Dipartimento Clinico di Radiologia ed di Istocitopatologia, Marcello Malpighi Università di Bologna.
Pathologica
|March 7, 1998
Summary
Pleomorphic hyalinizing angiectatic tumor (PHAT) is a rare soft tissue tumor. This case report details a PHAT in an elderly woman, highlighting its distinct features and potential relation to solitary fibrous tumors.
Area of Science:
- Surgical Pathology
- Soft Tissue Tumors
- Oncology
Background:
- Pleomorphic hyalinizing angiectatic tumor of soft parts (PHAT) is a recently identified soft tissue neoplasm.
- PHAT exhibits a low potential for malignancy in adult patients.
- This report focuses on a specific clinical case for detailed analysis.
Observation:
- An 80-year-old female presented with a palpable mass in the subcutaneous tissue of the right popliteal fossa.
- The tumor was well-circumscribed, enclosed by a fibrous pseudocapsule.
- Histological examination revealed spindle cells with pleomorphic nuclei and hyalinized vascular structures.
Findings:
- Microscopic analysis showed no evidence of necrosis or mitotic activity.
- Immunohistochemical staining demonstrated that neoplastic cells were positive for CD34.
- The tumor was differentiated from solitary fibrous tumor based on its unique characteristics.
Implications:
- This case contributes to the understanding of pleomorphic hyalinizing angiectatic tumor morphology and behavior.
- The findings suggest a potential shared origin between PHAT and solitary fibrous tumors.
- Further research may elucidate the specific lineage and pathogenesis of these related lesions.