title: Diplopia - an unusual primary manifestation of metastatic renal cell carcinoma.
abstract: It is relatively unusual that initial symptoms of renal cell cancer begin with the metastatic involvement of other sites. Intracranial metastases especially in the paranasal sinuses may be unusual not only to surgeons but also to physicians. In this report, we present a case where a metastasis was first manifest as a sphenoid sinus secondary with ocular and visual disturbances prior to the demonstration of the primary tumor site. It turned out to be a case of diplopia masquerading as a metastatic renal cell cancer.
authors.affiliation: Division of Urology, Department of Surgery, University College of Medical Sciences and Associated Guru Tegh Bahadur Hospital, Delhi, India. iqbal@bol.net.in
authors.forename: Iqbal
authors.initials: I
authors.lastname: Singh
authors.forename: A
authors.initials: A
authors.lastname: Khaitan
mesh_terms: D000368:Aged; D002292:Carcinoma, Renal Cell / Q000150:complications* / Q000175:diagnosis / Q000556:secondary; D004172:Diplopia / Q000209:etiology*; D006801:Humans; D007680:Kidney Neoplasms / Q000175:diagnosis* / Q000473:pathology; D008279:Magnetic Resonance Imaging; D008297:Male; D010255:Paranasal Sinus Neoplasms / Q000150:complications* / Q000175:diagnosis / Q000556:secondary; D013101:Sphenoid Sinus; D014057:Tomography, X-Ray Computed