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Image Based Question

Image Based Question – 65421

Question A patient presented with fever, night sweats and weight loss. Clinical examination revealed painless lymphadenopathy. Microscopy shows these cells. Most likely condition is: A. HIV B. Chronic lymphocytic leukemia C. Hodgkin’s lymphoma D. Secondary TB   Show Answer Correct Answer » C Explanation These cells are Reed Sternberg cells Ans: C i.e. Hodgkins lymphoma

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Streptococcus pyogenes

Streptococcus Pyogenes   Morphology Group A streptococci Gram-positive cocci Arranged in chains. Biochemical Characterstics Senstivity to bacitracin. (Maxted’s observation). Catalase negative (S aureus is Catalase Positive) CAMP Negative (Group B Streptococci are CAMP Positive) Not soluble in 10% bile. Hydrolyse PYR (Used for Presumptive Diagnosis of S pyogenes) Ferment trehalose but not ribose. Cultural Characteristics Virulent

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