Exercises in Ultrastructural Pathology

Ultrastructural pathology of melanomalytic glaucoma.

A patient presented with a heavily pigmented ciliary body tumour accompanied by diffuse pigmentation of the iris and chamber angle and secondary open angle glaucoma. The case was diagnosed clinically as malignant melanoma and melanomalytic glaucoma, and the eye was enucleated. Routine histopathology, immunohistochemistry, and ultrastructural studies revealed the tumour as being of the spindle c...

Ultrastructural pathology of S-antigen uveoretinitis.

The morphology of S-antigen-induced uveoretinitis in guinea pigs has been studied using transmission electron microscopy. Purified bovine retinal S-antigen was shown to produce a focal chorioretinitis, characterized by selective damage to the outer retina and, almost exclusively, a mononuclear cell infiltration of the choroid and retina. Even at high doses, extensive rod outer segment damage wa...

[Ultrastructural pathology of the alveolar apparatus in experimental drowning].

Investigations were carried out on anaesthetized rats which by a tracheotomy tube actively aspirated liquids of different osmolarities covering a range from tap water to 2.9% NaCl solution. In every range of osmolarity, the ultrastructural alterations show areolar limitations and different stages of development. In freshwater the influx of liquid causes a hypoxemic-dysoric alveolose with diffus...

Intestinal pathology in human metagonimiasis with ultrastructural observations of parasites.

A human case of intestinal metagonimiasis that was incidentally found during the histological examination of a resected segment of jejunum was described. The small adults trematode of Metagonimus yokogawai were found free in jejunal lumen as well as impacted in intervillous spaces. Histologically intestinal lesions were massive lymphoplasmacytic and eosinophilic infiltration in stroma, erosion ...

Fifty Shades of Ultrastructural Pathology in One Thousand Sural Nerves