Amebiasis Symptoms and Complications
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Questions and Answers

What is the most common clinical manifestation of B coli infection?

Chronic recurrent diarrhea

Describe the pathology when B coli trophozoites invade the mucosa and submucosa of the large bowel and terminal ileum.

Abscesses and irregular ulcerations are formed.

What are the possible symptoms of B coli infection other than chronic diarrhea?

Bloody mucoid stools, tenesmus, and colic

How can B coli infection be diagnosed in a laboratory setting?

<p>Detection of trophozoites in liquid stools or cysts in formed stools.</p> Signup and view all the answers

What treatment approach may be followed for B coli infection?

<p>A course of oxytetracycline, followed by iodoquinol or metronidazole if necessary.</p> Signup and view all the answers

Where is B coli commonly found?

<p>In humans throughout the world, particularly in the tropics.</p> Signup and view all the answers

What are the common symptoms of acute amebiasis?

<p>Dysentery (bloody, mucus-containing diarrhea), lower abdominal discomfort, flatulence, tenesmus</p> Signup and view all the answers

Describe the clinical manifestations of chronic amebiasis.

<p>Diarrhea, weight loss, fatigue</p> Signup and view all the answers

How does amebic abscess of the liver typically present?

<p>Right-upper-quadrant pain, weight loss, fever, tender, enlarged liver</p> Signup and view all the answers

What is an ameboma and where can it be found?

<p>A granulomatous lesion that may form in the cecal or rectosigmoid areas of the colon</p> Signup and view all the answers

How can E. histolytica trophozoites be distinguished?

<p>By the nature of the nucleus (small central nucleolus, fine chromatin granules along the border)</p> Signup and view all the answers

What are the recommended methods for examining for cysts in intestinal amebiasis?

<p>Wet mount in saline, iodine-stained wet mount, fixed trichrome-stained preparation</p> Signup and view all the answers

What are the clinical findings of giardiasis?

<p>Watery (nonbloody), foul-smelling diarrhea accompanied by nausea, anorexia, flatulence, and abdominal cramps persisting for weeks or months.</p> Signup and view all the answers

How is giardiasis diagnosed in the laboratory?

<p>Microscopic examination finding trophozoites or cysts in diarrheal stools. In asymptomatic carriers, only cysts are seen. Serological test ELISA can also be used to detect Giardia cyst wall antigen in the stool.</p> Signup and view all the answers

What is the treatment of choice for giardiasis?

<p>Metronidazole (Flagyl) or quinacrine hydrochloride.</p> Signup and view all the answers

How is Balantidium coli transmitted?

<p>Transmission occurs by ingestion of mature cysts.</p> Signup and view all the answers

What is the morphology of the trophozoite of Chilomastix mesnili?

<p>It has 4 flagella (3 anterior, 1 associated with the cytostome) and one nucleus, always located anteriorly.</p> Signup and view all the answers

What are the clinical manifestations of Balantidium coli infection?

<p>Balantidium coli causes balantidiasis or balantidial dysentery.</p> Signup and view all the answers

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