Idiopathic orbital myositis, also called myositis subtype of idiopathic orbital inflammatory pseudotumor
, first described by Gleason (10) in 1903, is a myositis resulting in the inflammation of the extraocular muscles without any local or systemic reason.
Extrapulmonary inflammatory myofibroblastic tumor (inflammatory pseudotumor
): a clinicopathologic and immunohistochemical study of 84 cases.
Intraoral inflammatory pseudotumor
. Oral Surg Oral Med Oral Pathol 1993; 76: 279-83.
Plasma cell granuloma (inflammatory pseudotumor
) of the breast.
The intraorbital findings of the IgG4-RD may include orbital inflammatory pseudotumor
, which may present as unilateral or bilateral intraconal, conal, or extraconal masses, as shown in Fig.
The differential diagnosis of IPT-like FDC tumors is conventional inflammatory pseudotumor
, because these tumors have similarity by presence of inflammatory cell and fibrotic tissue (9).
Hua, "Inflammatory pseudotumor
around metal-on-polyethylene total hip arthroplasty in patients with ankylosing spondylitis: description of two cases and review of literature," World Journal of Surgical Oncology, vol.
Kolli, "Inflammatory pseudotumor
," RadioGraphics, vol.
Histopathology showed sclerosing infiltrative inflammatory pseudotumor
, with significant positive staining for IgG4 plasma cells.
Inflammatory myofibroblastic tumors (IMT), formerly known as plasma cell granuloma or inflammatory pseudotumor
, are rare benign tumors which can occur at all anatomic sites.
Nakanuma, "Pathological classification of hepatic inflammatory pseudotumor
with respect to IgG4-related disease," Modern Pathology, vol.
The pathological analysis revealed an inflammatory pseudotumor
with lymphocyte infiltration (IgG positive and IgG4 negative).