Necrotising granulomas of the uterine corpus

Necrotising granulomatous inflammation of the uterine corpus associated with transcervical laser ablation of the endometrium occurred in four patients. The abnormalities seen, including extensive necrosis and hyalinisation with foreign body giant cells containing black foreign material, and eosinophilic homogenisation around blood vessels, were due to the effects of tissue fulguration. The presence of black foreign material in loosely organised histiocytes should alert the pathologist even in the absence of clinical information; stains for organisms are negative.