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Summary
| Description |
Paragonimiasis is caused by the lung fluke Paragonimus westermani which is most prominent in Asia and South America. Infection in humans is contracted by the ingestion of a crab or crayfish harboring the metacercariae. The metacercariae excyst in the small intestine and penetrate the intestinal wall gaining entrance to the peritoneal cavity and are then able to penetrate the diaphragm and invade the lungs where they develop into adults.The adult worms usually become surrounded by a fibrous capsule but they may also inhabit the airways. Ova are coughed up and either expectorated or swallowed and then excreted. If the ova find their way into water the miracidia emerge from the ova which may then be ingested by a suitable snail. Cercariae leave the snail and then invade a crab or crayfish where they develop into metacercariae, the infective stage for humans. This image shows numerous large, yellow ova with a thick outer rim located within the lung parenchyma.. Contributed by Philip Kane, MD |
| Date | |
| Source | Paragonimiasis - Case 285 |
| Author | Yale Rosen from USA |
Licensing
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This image was originally posted to Flickr by Pulmonary Pathology at https://www.flickr.com/photos/30950973@N03/13381685275. It was reviewed on 26 November 2014 by FlickreviewR and was confirmed to be licensed under the terms of the cc-by-sa-2.0. |
Licensing
- You are free:
- to share – to copy, distribute and transmit the work
- to remix – to adapt the work
- Under the following conditions:
- attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
- share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.
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|
This image was originally posted to Flickr by Pulmonary Pathology at https://www.flickr.com/photos/30950973@N03/13381685275. It was reviewed on 26 November 2014 by FlickreviewR and was confirmed to be licensed under the terms of the cc-by-sa-2.0. |
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 22:42, 26 November 2014 | | 3,570 × 2,432 (3.28 MB) | LittleT889 | {{Information |Description=Paragonimiasis is caused by the lung fluke Paragonimus westermani which is most prominent in Asia and South America. Infection in humans is contracted by the ingestion of a crab or crayfish harboring the metacercariae. The me... |
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