Background: Giant cysts of the liver are uncommon. Symptoms are related primarily to the mass effect of the enlarging cyst. Objective: To highlight the challenges of management of giant simple hepatic cyst in a resource limited setting. Case report: Presented is a 58-year-old seamstress with a 5-year history of an enlarging abdominal mass with easy satiety. Surgery revealed an exophytic giant simple hepatic cyst arising from liver segment IV that drained 4.6 litres of serous fluid. Conclusion: Simple hepatic cyst can attain giant dimensions and should be considered in the differential diagnosis of intra-abdominal masses.

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Aspects of the reproductive biology of the two species of clupeids known to occur in Lake Kainji, Pellonula afzeliusi Johnels and Sierrathrissa leonensis Thys Van Den Audenaerde were studied for a period of twenty eight months . Mature individuals were found in both species all the year round but with a prolonged peak of activity from December to May, more distinct in P. afzeliusi than in S. leonensis .There were no significant length differences between mature males and females in both species . The smallest mature individuals were 28 mm standard length female ; 27 mm standard length male in P. afzeliusi, while the corresponding figures for S. leonensis were 18 mm standard length female and 19 mm standard length male .No sexual dimorphism was observed . There was a simple correlation between fecundity and fish standard body length as well as weight in both species.

Schwannoma may present as multiple lesions in a multilobulated scalp lesion and should be considered as differential diagnosis.

The fish fauna changes and the place of the clupeids was examined . It was found that the conditions in the lake since impoundment have favoured the growth and development of these little sardines . The studies undertaken prior to impoundment and their continuation right from the time of the closure of Kainji Dam in August 1968 has made it possible for these changes to be followed sequentially.