Erlenmeyer flask appearance
A descriptive term for a lesion seen in patients with fulminant Entamoeba histolytica-induced amebiasis. Gross examination reveals mucosal ulcers, cross sectioning through which demonstrate, by low-power light microscopy, typical lesions with a narrow neck and a broad ulcerated base, fancifully likened to an Erlenmeyer flask. The extensive submucosal lesions may be covered by relatively intact mucosa.
Synonym Erlenmeyer flask change