Pleomorphic hyalinizing angiectatic tumor of renal hilum

Muhammad Idrees, Theodore Kieffer, Sunil Badve

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Pleomorphic hyalinizing angiectatic tumor (PHAT) is a recently described rare entity. The tumor histogenesis is proposed to be of primitive undifferentiated mesenchyme. The tumor has a predilection for the subcutaneous soft tissue especially of lower extremity, although other locations have been well documented. We report a case of PHAT arising in the hilum of the kidney, clinically mimicking an infiltrating malignant neoplasm of renal pelvis. The tumor was discovered during workup for unrelated gastrointestinal tract symptoms. Because of the location of the lesion, excision of mass and radical nephrectomy were performed. The tumor had strong immunohistochemical expression of vimentin, CD34, CD99, and vascular endothelial growth factor (VEGF). No additional lesions were documented during 3 years of follow-up. This is consistent with the current thinking that PHAT is a benign neoplasm with increased incidence of recurrence. We document the unique retroperitoneal location of this rare tumor and suggest that PHAT should be considered among the list of unusual lesions at this site.

Original languageEnglish
Pages (from-to)489-493
Number of pages5
JournalAnnals of Diagnostic Pathology
Volume16
Issue number6
DOIs
StatePublished - Dec 2012

Fingerprint

Kidney
Neoplasms
Pelvic Neoplasms
Kidney Pelvis
Subcutaneous Tissue
Vimentin
Mesoderm
Nephrectomy
Vascular Endothelial Growth Factor A
Gastrointestinal Tract
Lower Extremity
Recurrence
Incidence

Keywords

  • PHAT
  • Pleomorphic hyalinizing angiectatic tumor
  • Renal hilum
  • Solitary fibrous tumor
  • VEG-F

ASJC Scopus subject areas

  • Pathology and Forensic Medicine

Cite this

Pleomorphic hyalinizing angiectatic tumor of renal hilum. / Idrees, Muhammad; Kieffer, Theodore; Badve, Sunil.

In: Annals of Diagnostic Pathology, Vol. 16, No. 6, 12.2012, p. 489-493.

Research output: Contribution to journalArticle

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