pseudotumour BrE
pseudotumor AmE

The histologic differential diagnosis includes calcifying fibrous pseudotumour, inflammatory fibroid tumour and nodular fasciitis.

The terms Riedel's thyroiditis, sclerosing cholangitis, retroperitoneal fibrosis, mediastinal fibrosis, and pseudotumour of the orbit reflect the multiple areas affected.

Inflammatory myofibroblastic tumour, also known as inflammatory pseudotumour, plasma cell granuloma, and inflammatory fibrosarcoma, is a soft tissue lesion that may be confused with a sarcoma.