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Crossed fused ectopia of kidneys is a rare congenital anomaly. It is usually associated with congenital anomalies of the gut. Development of malignancy in crossed fused ectopic kidney is uncommon. We present two cases, both females aged 47 and 60 years with crossed fused renal ectopia detected due to the development of malignancy in them. This report highlights the rare occurrence of the entity and role of US, CT scan and MRI in such patients.

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BACKGROUNDOrthopantomography plays a great role to categorise the lesion according to its location and relationship with respect to tooth. It is simple and cost effective. Orthopantomography can provide clue regarding the aggressiveness of the lesion and therefore a radiologist can provide an idea as to which lesion can be left alone and which lesion require therapy or surgery. MATERIALS AND METHODSPatients with specific complaint pertaining to lower jaw, pain in the lower jaw, discharge from mouth, etc. were studied by orthopantogram examination. The machine use for the study is D. B. Troniks and the duration of the study is one year from January 2016 to December 2016. RESULTSA study of 50 patients were carried out at our institute having symptoms and sign pertaining to lower jaw. Maximum cases were found in fourth decade. Males were more affected than females. On radiographic features, most lesions were mixed followed by sclerotic and then lytic. Most common benign malignant lesion found in our studies was squamous cell carcinoma followed by multiple myeloma. CONCLUSIONThe orthopantomography examination is very useful and important diagnostic aid in diagnosis of these mandibular lesions, as it is a simple and nontraumatic procedure. Various mandibular lesions showing radiographic features like solid-cystic appearance, location, margins, internal architecture, bony expansion, cortical breach, effect of lesion on adjacent structures, etc. play an important role in diagnosis of these lesions. KEYWORDSBenign Lesions, Mandible, Orthopantomogram. HOW TO CITE THIS ARTICLE: Vyas RR, Soni HC, Bhalodia AC, et al. Malignant lesions of mandible on orthopantomogram-Our experience. J. Evid. Based Med.