has been described in both genders of all ages, and in almost any location (1, 2). It is characterized histologically by the presence of acute and chronic inflammatory cells with a variable fibrous response (2). Its pathogenesis is uncertain, but the lesion is generally regarded as reactive or postinfectious, and it originates from an inflammatory process (2). It has been reported to occur in m...

An inflammatory pseudotumor is a rare benign lesion consisting of fibrous tissue and inflammatory cells. Although it can appear anywhere in the body, the most common site for this lesion is the lung.1 The hepatic counterpart was first described in 1953 by Pack and Baker.2 Since then only about 50 cases have been reported in the literature.3 The clinical and pathologic features have been well de...

To describe the clinical characteristics of orbital pseudotumor, a retrospective analysis was performed on patients with orbital pseudotumor at Siriraj Hospital for ten years. Forty-nine patients (24 males and 25 females; 62 eyes) with a mean age of 43.75 years were included (a mean follow-up of 25 months). Thirty-six patients (73.5%) had unilateral disease. The clinical features were proptosis...

We treated a patient with inflammatory pseudotumor of the mediastinum that exhibited high uptake of fluorodeoxyglucose on positron emission tomography. A 69-year-old male patient was diagnosed with a mass measuring 70 mm in diameter in the anterior mediastinum as revealed by computed tomography. The lesion showed strong uptake of 18-fluorine fluorodeoxyglucose with a maximum standardized uptake...

Mass-like lesions with histologic features of nonspecific inflammation and mesenchymal repair have been designated as inflammatory pseudotumors. Such lesions occasionally have been observed in a variety of tissues, such as the orbit, spinal meninges, digestive system, heart, soft tissues, mesothelial membranes, and respiratory tract. Splenic involvement is extremely rare. To our knowledge, sinc...

Immunoglobulin (Ig) G4-related systemic disease is a recently characterized entity. The best-known manifestation is pancreatitis. Other systemic involvements are also described. Three cases of this disease with hypophyseal involvement have been reported in the literature, all diagnosed clinically. We herein present the first case of IgG4-related hypophysitis diagnosed histopathologically. The p...

BACKGROUND AND PURPOSE Antiphospholipid antibodies are known to be associated with increased risk of venous and arterial thrombotic events, including cerebral venous thromboses. Pseudotumor syndrome can be produced by cerebral venous thrombosis. A patient with cerebral venous thrombosis associated with antiphospholipid antibodies who exhibited pseudotumor syndrome is reported. CASE DESCRIPTIO...

Papilledema is considered a neuro-ophthalmic emergency because of its capacity to induce irreversible end-organ damage and the often grave nature of its precipitating factor. Even more concern is warranted when papilledema presents in a pediatric setting. After excluded the contributions of intracranial masses, congenital malformations, ischemic insults and acute infections, the investigation m...

The inflammatory pseudotumor of the liver is an exceptional hepatic lesion first described in 1953 by Pack et al. (1,2) that mimics a malignant tumor but has benign histology and good clinical outcome. Its exact etiology is still unknown (2-4) but has been associated with some systemic inflammatory disorders (1,3). We present a case of a multiple hepatic inflammatory pseudotumor with spontaneou...

We describe a 16-year-old male with ultrasound evidence of a 1.3 cm right paratesticular nodule, which was managed by intraoperative frozen section and excisional biopsy. The pathologic findings were consistent with benign fibrous pseudotumor of the tunica vaginalis testis, which is a very rare lesion in the pediatric population. Consideration of fibrous pseudotumor in the differential diagnosi...