A granuloma can be defined as "an organized collection of epithelioid macrophages."

Being unaware of its infectious origin, it was originally called epithelioid angiomatosis.

The center of the lesion consists of macrophages and epithelioid cells.

Epithelioid blue nevi are a cutaneous condition most commonly seen in patients with the Carney complex.

Touton Giant cell also consists of fused epithelioid macrophages and have multiple nuclei.

Epithelioid sarcoma.

The epithelioid histology responds better to treatment and has a survival advantage over sarcomatoid histology.

These cells differentiate into epithelioid histiocytes which wall off the infected cells, but at the cost of significant inflammation and local damage.

The perineurium is cellular, and is composed of perineurial cells, which are epithelioid myofibroblasts.

Epithelioid cell histiocytoma is a rare skin condition that is considered to be a variant of a dermatofibroma.

Clinical features, including prominent tumor vascularity, rapid growth, and heterogeneous pigmentation, are associated with an epithelioid cell component.

Like many of the other kinds of giant cell formations, the epithelioid macrophages fuse together, and in return multiple nuclei form.

Characteristic for granulomatous mastitis are multinucleated giant cells and epithelioid histiocytes around lobules.

Miroscopically there are epithelioid granulomas and vasculitis in the subcutaneous tissue, making it a form of panicullitis.

"It's got giant cells and epithelioid cells, the sine qua non of a granuloma.

Epithelioid sarcoma is a rare mesenchymal tumor of uncertain histogenesis which displays multilineage differentiation.

The preferred pathologic designation for these lesions in older persons is epithelioid hemangioendothelioma, which connotes the possibility of distant spread.

As with other types of giant cells, epithelioid macrophages fusing together is what causes these giant cells to form and grow.

Epithelioid sarcoma-like hemangioendothelioma (2003)

Epithelioid cells are an essential characteristic of granulomas: that is to say that without them a histological finding is not a granuloma.

Odontoblasts are large columnar cells arranged in an epithelioid sheet along the junction between dentin and pulp, all the way down to the root apex.

Unlike epithelial cells, however, epithelioid cells make contacts over their entire surface, rather than at restricted (e.g., basolateral) portions.

They are formed by the fusion of epithelioid cells (macrophages), and contain nuclei arranged in a horseshoe-shaped pattern in the cell periphery.

Epithelioid sarcoma is a rare mesenchymal soft tissue tumour with an epithelioid pattern.