A Steeple sign

B Rigler's sign

C Golden 'S' sign

D 'Bird of prey' sign

A Psoas major

B Gluteus maximus

C Quadratus femoris

D Obturator internus

A Edema

B Pigmentation or eczema

C Healed venous ulcer

D Lipodermatosclerosis or atrophie blanche

A Perianal abscess

B Thrombosed hemorrhoids

C Acute anal fissure

D Fistual in ano

A On the upper part of sternum

B On the xlphisterum

C On the middle of the lower part of the sternum

D On the left side of the chest

A Pterygomandibular space infection

B Retropharyngeal space infection

C Pre tracheal space infection

D Lateral pharyngeal space infection

A Radial nerve

B Ulnar nerve

C Median nerve

D Anterior interosseous nerve

A Keratin pearls

B Foam cells

C Nuclear palisading

D Psammoma bodies

A Syringomyelia

B Brain stem tumors

C Skull bone tumors

D Multiple sclerosis

A Endoscopy

B Staining with endoscopic biopsy

C Physical examination

D Ultrasound abdomen