<prompt> Hydrocele edema in foot occur in:W. BancroftiB. MalaylB.TimoriOncocerca volulus  <response>: Ans : A W.Bancrofti Hydrocele genital involvement is only feature of Bancroftian filariasis W.Bancrofti not of rarely Brugian fila riasis B. malayi B.TimoriIn chronic Bancroftian filariasis. the main clinical features are hydrocele; elephantiasis chyluria. The Brugian filariasis isgenerally similar to Bancroftian filariasis, but the genitalia are rarely involved, except in areas where Brugian filariasis occurs together with Bancroftian filariasis-Park 21st246Wuchereria bancroftl can affect the legs, arms, vulva, breasts, and scrotum causing hydrocele formation, while Brugia timori rarely affects the genitals-en.wikipedia.org.filariaisisGenital lesions or chyluria milky colour urine do not occur in brugian filariasis. Hydrocele is the most common sign of chronic bancroftian filariasis, followed by lymphoedema, elephantiasis and chyluria-nvbdcp.gov.inThe most common presentations of the lymphatic filariases are asymptomatic or subclinical microfilaremia, acute adenolymphangitis ADL, and chronic lymphatic diseases hydrocele. If lymphatic damage progresses, transient lymphedema can develop into lymphatic obstruction and the permanent changes associated with elephantiasis. Brawny edema follows early pitting edema, and thickening of the subcutaneous tissues and hyperkeratosis occuf- Harrison 18th1746Table Jawetz: MicrofilariaeFilariidDiseaseVectorsWuchereria bancrofti Brugia malayiBancroftian and Malayan filariasis: lymphangitis, hydrocele, elephantiasisCuliddae mosquitoes Culiddae mosquitoesLoa loaLoiasis; Calabar swellings; conjunctival wormsChrysops, deer fly, mango flyOnchocerca volvulusOnchocerciasis: skin nodules, blindness, dermatitis, hanging groinSimulium, buffalo gnat, black flyMansonella Dipetalonema PersiansMansonelliasis or dipetalonem iasis minor disturbancesCulicoides, biting midgeMansonella streptocercaUsually nonpathogenicCulicoides, biting midgeMansonella ozzardiOzzards mansonelliasis benign, occasionally hydroceleCulicoides, biting midgeDracunculiasis Guinea Worm Infection Harrison 18th1751Few or no clinical manifestations of dracunculiasis are evident until fust before the blister forms, when there is an onset of fever and generalized allergic symptoms, including periorbital edema, wheezing, and urticaria. The emergence of the worm is associated with local pain and swelling 