Background: Renal hilum is the middle concavity of the medial border of kidney which communicates with renal sinus. The disposition of renal hilar structures has been described in anatomical textbook from anterior to posterior as the renal vein, renal artery and renal pelvis. Variations in arrangement of renal hilar structures were detected incidentally while performing investigative imaging and angiographic procedures. Anatomical knowledge of structures at the renal hilum is of great importance for various urological surgical procedures and also during interpretation of various radiological techniques related to the kidney.

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Introduction:Foramen ovale is an important foramen in the middle cranial fossa. Foramen ovale is situated in the greater wing of sphenoid bone, posterior to the foramen rotandum. Through the foramen ovale the mandibular nerve, accessory meningeal artery, lesser petrosal nerve, emissary veins pass .The shape of the foramen ovale is usually oval compared to other foramen of the skull.

Background: Cervical rib is an extra rib present in neck in 1-2% of population. It is usually unilateral and in some cases bi-lateral .To determine if a cervical rib is present requires an X-ray Knowledge of clinical appearance & radiographic character-istics of cervical rib would enable differential diagnosis in and around this area with aim of easier orientation and faster arri-val at final diagnosis. In this study the focus is on different types of cervical rib radiographs which has been collected from department of radiology. Material and Methods: 100 Chest x-rays with apical lordotic views and cervical spine were obtained from Department of Radiology. Complete and incomplete cervical ribs were observed in the study. Results: Frequency of Cervical ribs in our study matched with the findings of general population. Conclusion: Cervical rib may be an incidental finding in a small percentage of normal people. It is not necessary for this to cause any symptoms however an occasional patient may have symptoms pertaining to this. Keywords: Cervical rib,Thoracic outlet syndrome, Brachial plexus

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