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Updated: Jun 20, 2026

An Immunohistopathologic Study to Profile the Folate Receptor Beta Macrophage and Vascular Immune Microenvironment in Giant Cell Arteritis

Published on: February 8, 2019

Juvenile temporal arteritis.

Olga K Kolman¹, Henry M Spinelli, Cynthia M Magro

¹Department of Pathology, Massachusetts General Hospital, Boston, Massachusetts, USA.

Journal of the American Academy of Dermatology

|September 15, 2009

Summary

This summary is machine-generated.

Juvenile temporal arteritis (JTA) is a rare condition affecting the temporal artery. This case highlights its potential overlap with other conditions, necessitating careful monitoring.

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Area of Science:

Vascular Pathology
Rheumatology
Dermatopathology

Background:

Juvenile temporal arteritis (JTA) is a rare, nongranulomatous inflammatory condition of the temporal artery.
It is characterized by internal elastic lamina fragmentation and typically lacks systemic manifestations.
The histopathology can resemble angiolymphoid hyperplasia with eosinophilia (ALHE) or Kimura disease, leading to diagnostic debate.

Observation:

A 36-year-old Jamaican woman presented with a painful forehead nodule.
Histopathology revealed features consistent with JTA, including intimal hyperplasia, lymphoeosinophilic inflammation, and disrupted internal elastic lamina.
Signet ring-like endothelial cell alterations and extensive subcutaneous lymphoeosinophilic infiltrates with neovascularization were also noted, suggesting overlap with ALHE or Kimura disease.

Findings:

The case demonstrates JTA with features overlapping those of ALHE or Kimura disease.
The internal elastic lamina showed fragmentation, a key feature of JTA.
Endothelial cells exhibited unique signet ring-like changes.

Implications:

The differential diagnosis between JTA and systemic conditions like ALHE/Kimura disease requires careful clinicopathologic correlation.
Given the limited long-term follow-up data for JTA, prolonged patient monitoring is advisable.
This case expands the understanding of JTA's histopathologic spectrum and its relationship with other eosinophilic vascular disorders.