Hepatosplenic schistosomiasis results from infestation by Schistosoma mansoni, a blood fluke. Presinusoidal periportal fibrosis is invariably the result of this infestation. The ultrasonic pattern of schistosomal periportal fibrosis in 22 patients in whom schistosomal hepatic involvement was proven histologically is described. Echogenic areas of pipestem fibrosis seen as tubular shadows, some containing central lucencies, were present in every case. These tubular shadows conformed to the structure of the portal veins, producing a characteristic appearance. In endemic areas this appearance may be the only clue to the diagnosis of hepatosplenic schistosomiasis, because patients may remain asymptomatic for years after the onset of the disease.

An autoamputated wandering calcified ovary (AWCO) is an extremely rare cause of abdominal calcification in the pediatric population. We present the magnetic resonance imaging (MRI) features of AWCO in a child. To our knowledge, the MRI features of AWCO have not been previously described in the published literature. Our case report indicates that the MRI findings are characteristic in the diagnosis of an AWCO and can completely obviate the need for invasive procedures in this mostly benign disease. An AWCO should be considered in all cases of mobile calcific opacities on radiographs in female patients. We advise that MRI be conducted in all suspected cases of AWCO for accurate and noninvasive diagnosis, and regular follow-up should be performed with ultrasound. The findings in our case report have the potential to change the course of investigations and management in suspected cases.

Fibro-osseous lesions of the face and paranasal sinuses are relatively uncommon. These lesions have overlapping clinical, radiologic and pathologic features causing difficulty in diagnosis. Neoplastic fibro-osseous paranasal sinus lesions can be benign or malignant. The benign fibro-osseous lesions described are: ossifying fibroma (and its histologic variants) and fibrous dysplasia. The variants of ossifying fibroma differ in the nature of calcified material (i.e. cementum versus bone), in the location of the lesion (oral versus paranasal sinus or orbital), other morphologic variations (presence of psammomatoid concretions) and biologic behavior (aggressive versus stable). Presence of cementum or bone classifies the lesion as cementifying fibroma or ossifying fibroma respectively while lesions with mixture of both cementum and bone are called cemento-ossifying fibroma. We describe a case of a young adult male with cemento-ossifying fibroma of paranasal sinus presenting acutely as left orbital cellulitis with proptosis.