Case #446 – June, 2017

Blood specimens were collected at night from members of a village in Myanmar endemic for lymphatic filariasis. Roughly one-third of the cases were symptomatic, with or without recurrent episodes of fever and various degrees of lymphedema. The objects in Figures A and B were observed on Giemsa-stained thick blood films from a few of the asymptomatic cases at 500x oil magnification; Figures C and D show close detail of the object in Figure B at 1000x oil magnification. The objects measured on average 200 micrometers in length. What is your diagnosis? Based on what criteria?


Figure A


Figure B


Figure C


Figure D

Images presented in the dpdx case studies are from specimens submitted for diagnosis or archiving. On rare occasions, clinical histories given may be partly fictitious.

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Page last reviewed: July 19, 2017