Species identification: summary page: Difference between revisions
From haematologyetc.co.uk
No edit summary |
No edit summary |
||
(One intermediate revision by the same user not shown) | |||
Line 82: | Line 82: | ||
'''Brief summary''' | '''Brief summary''' | ||
* | *Ring forms are large and robust and often retained in the late trophozoite stage | ||
*Red cells | *Red cells become moderately enlarged and may have oval shape with characteristic fimbriation | ||
*Schüffner's (James) dots seen in appropriately stained samples | *Schüffner's (James) dots form dusing development and will be seen in appropriately stained samples | ||
*All forms tend to circulate | *All developmental forms tend to circulate and may be difficult to distinguish from ''P.vivax'' | ||
'' | <div style="width: 230px"> | ||
{| class="wikitable" style="border-left:solid 4px gray;border-right:solid 4px gray;border-top:solid 4px gray;border-bottom:solid 4px gray; font-size:90%; color:navy; align:center" | |||
| colspan="1"''|[[Plasmodium ovale: Morphology|'''CLICK''' for detailed description]]'' | |||
|} | |||
</div> | |||
---- | ---- | ||
Latest revision as of 14:26, 1 May 2024
Navigation
(click blue highlighted text to return to page)
Malaria main index
>This page: Species Indentification: summary
Plasmodium falciparum |
Summary
- Small and fine ring forms, look for typical forms accolé, multiple parasites per cell, double dot
- Characteristic Maurer's dots and clefts in late trophozoites
- The irregular and "tatty" schizonts very rarely seen in blood unless severe infection
- Characteristic elongated (often curved) 'banana' gametocytes
Plasmodium vivax |
Summary
- Large and robust rings that become "amoeboid" during later development
- Red cells become increasingly enlarged and distorted as parasites mature
- Schüffner's dots are visible in appropriately stained thin blood films
- All forms tend to circulate with large schizont and gametocyte forms present
Plasmodium ovale |
Brief summary
- Ring forms are large and robust and often retained in the late trophozoite stage
- Red cells become moderately enlarged and may have oval shape with characteristic fimbriation
- Schüffner's (James) dots form dusing development and will be seen in appropriately stained samples
- All developmental forms tend to circulate and may be difficult to distinguish from P.vivax
Plasmodium malariae |
Brief summary
- Small rings (less delicate than P.falciparum) and becoming elongated or solid as parasites mature
- Red cells often small remaining a round shape and with no added dots unless heavily stained
- All forms tend to circulate, characteristically look for "daisy" schizonts and small round gametocytes
- Parasite number is often low
For more information
Plasmodium knowlesi |
Brief Summary
- Very limited geographical distribution within S.E Asia
- Small fine ring forms resemble those of P.falciparum and may have high parasite count
- Later rings are more solid or elongated similar to P.malariae, although faint dots may be present
- Schizonts & gametocytes are often present and may resemble P.malariae but are less "neat"
- Characteristically red cell size is unaffected, although distortion may be seen
For more information
- click for full description of P.knowlesis morphology
- haga clic para obtener una descripción completa de la morfología de P.knowlesis
- click to visit the gallery of P.knowlesi forms