A simple method for sampling indoor-resting malaria mosquitoes Anopheles gambiae and Anopheles funestus (Diptera: Culicidae) in Africa.

Sampling indoor resting African malaria vectors is traditionally done by hand catches with oral or mechanical aspirators and pyrethrum spray catches (PSCs). In this study, we designed and briefly evaluated an inexpensive but practical alternative by using a cloth resting box or wicker resting basket and a ceiling net. Evaluations were performed in greenhouse and field situations in rural Kenya by comparing capture rates of Anopheles gambiae s.l. and Anopheles funestus (Giles) in these traps to hand collections and PSCs. A resting box and a ceiling net when used together collected more mosquitoes than a single collector using a hand-held aspirator but only one-third the number collected by PSCs. At sites where PSCs are impractical, a resting box and ceiling net can be effectively used as an alternative to hand catches in malaria surveillance.

[Serous cystadenoma of the pancreas: imaging findings]. / Cistoadenoma sieroso del pancreas: i rilievi del'imaging.

PURPOSE: To present the imaging findings of serous cystadenoma (SCA) and discuss the main problems of differential diagnosis with other cystic pancreatic lesions. MATERIALS AND METHODS: 55 cases of SCA were reviewed; all the lesions proved to be benign at pathology. 35 tumors were evaluated with Ultrasonography (US), 49 with Computed Tomography (CT), and 15 with Magnetic Resonance Imaging (MRI). RESULTS: Among the patients who underwent either demolitive (47) or derivative (3) interventions, two different morpho-structural patterns were identified: microcystic (37), and oligocystic (13). The diagnosis of SCA, possible in the presence of microcystic pattern, was achieved in 63% of cases by US (22/35), in 63% of cases by CT (31/49), and in 73% of cases by MRI (11/15). In 12 patients evaluated with all the imaging modalities, the combined information allowed a correct diagnosis in 10 cases (83%). The 13 oligocystic tumors were almost always undistinguishable from other cystic masses of the pancreas. CONCLUSIONS: The diagnosis of SCA can be considered certain if a microcystic pattern is detected. A correct diagnosis is not achievable in the presence of oligocystic architecture. MRI is the best imaging modality in characterizing this tumor.