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Related Experiment Video

Updated: May 4, 2026

A Model for Perineural Invasion in Head and Neck Squamous Cell Carcinoma
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Inflammatory pseudotumor in head and neck.

Yuichi Segawa1, Ryuji Yasumatsu2, Hideki Shiratsuchi1

  • 1Department of Otorhinolaryngology, Hamanomachi Hospital, Nagahama 3-3-1, Chuou-ku, Fukuoka, Japan.

Auris, Nasus, Larynx
|December 24, 2013
PubMed
Summary
This summary is machine-generated.

Inflammatory pseudotumor (IPT) is a rare head and neck lesion. Corticosteroids show promise for treating IPT, though treatment strategies for this condition remain debated.

Keywords:
ALKHead and neckIgG4Inflammatory pseudotumor

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Area of Science:

  • Head and Neck Pathology
  • Oncology
  • Immunology

Background:

  • Inflammatory pseudotumor (IPT) presents as a tumefactive lesion with fibroblastic and inflammatory cells, mimicking neoplastic processes.
  • Distinguishing IPT from other entities like inflammatory myofibroblastic tumor and IgG4-related sclerosing disease is crucial for accurate diagnosis.

Observation:

  • Two rare cases of head and neck IPT are presented: one in the orbit and another in the parapharyngeal space.
  • Histological analysis revealed myofibroblasts and inflammatory cells, with immunohistochemistry ruling out specific markers for other conditions.

Findings:

  • Both patients received corticosteroid treatment, with systemic administration yielding a good response and local administration showing a partial response.
  • The cases were diagnosed as IPT/not otherwise specified, highlighting the diagnostic challenges.

Implications:

  • Head and neck IPT is exceptionally rare, necessitating careful consideration of treatment options, including corticosteroids, surgery, chemotherapy, or radiotherapy.
  • Treatment decisions for IPT should integrate pathological subtype, surgical risks, and corticosteroid safety profiles.