Choanal polyps can be classified as antrochoanal, sphenochoanal or ethmochoanal polyps depending upon the site of origin, in comparison to common nasal polyps and antrochoanal polyps, reports of sphenochoanal polyps are relatively rare. Authors present a case of a 18 year old boy presenting to the clinic with unilateral nasal obstruction and nasal tone in voice, which was a diagnostic dilemma for the radiology department as it was misdiagnosed unable to be differentiated by CT scan. MRI scan of the patient confirmed the diagnosis of a sphenochoanal polyp. We aspire to widen the horizon of the knowledge by discussing the case and enabling timely diagnosis and treatment.

Situs inversus is a rare, autosomal recessive condition that is incidentally discovered. It may occur with dextrocardia, levocardia, or situs ambiguous, the latter with either right or left isomerism, along with asplenia or polysplenia. Incidence of situs inversus varies from 0.002% to 1%. Mostly it occurs in males. [1][2][3] Situs inversus totalis is the mirror image of the situs solitus, which describe the normal position of the thoracic and abdominal viscera. It may be associated with other genetic diseases such as Kartagener's syndrome. 4 This condition does not affect the life expectancy or quality of life. 1,3 Individuals with situs inversus anomaly exhibit a variety of associated gastrointestinal abnormalities. These anomalies involve liver, biliary tract, stomach, spleen and the intestines. There are few cases in which the anomaly was never detected during lifetime because of the absence of any presenting symptom. Such anomalies may be incidental findings during autopsies or cadaveric dissections. Any mechanical disturbance which occurs in any of the two rotational movements may give rise to abnormal positioning of the heart or dextrocardia. Some researchers defined a gut rotationdetermining factor which is usually located in the left side of the body. 5 The transposition of the abdominal viscera in the present case may be related to malrotation of the gastrointestinal system during the embryonic development. It has been thought that the disturbance of this gut rotation determining factor during ontogenesis may be solely responsible for situs inversus. 5 Aristotle discovered this alternation in animals while in humans it was described by Fabricius in1600. Vehemeyer first identified situs inverses in 1967 with x-rays. 4,6 First case of SIT was by Venu et al (1985) 3 in America and latest by Kamani L et al (2014) 7 in Pakistan. The exact etiologies remains obscure but attempts have been made to explain it on the basis of a complex gene with variable expression. 6 More than one genetic mutation was implicated in etiopathogenesis. 8 Mohamed S et al 2013 reported a male case of situs inversus which remained undiagnosed until the age of 50 years. He presented as chest pain and collapsed even before starting treatment and was diagnosed SITS on autopsy. 9 Clinical manifestation depends on the location of the compromised organ. It does demand greater attention from surgeons and endoscopist because diagnosis can be c.