Ataxia is impaired coordination in the absence of weakness. Acute ataxia is a neurological emergency, and vascular lesions of the cerebellum (infarction, hemorrhage) must be considered/ excluded.
In an adult, large bowel obstruction is cancer until proven otherwise. Key radiological features are dilated bowel loops that are peripheral, contain haustra and contain faeces.
Differential diagnosis of dysphagia - difficulty swallowing.
Differential diagnosis of the scrotal mass. See also scrotal pain and inguinal mass (in abdominal mass)
Causes of a kidney mass, or an enlarged kidney; unilateral or bilateral
Recurrent facial twitches are most commonly due to hemifacial spasm, but this needs to be distinguished from other causes.
Parkinsonism is a combination of resting tremor, rigidity, bradykinesia, and loss of postural reflexes. Parkinson disease (PD) is the most common form, but must be distinguished from its imitators.
Abdominal distension is diffuse swelling or enlargement of the abdomen. It can also apply to the sensation of elevated abdominal pressure and volume.
Acanthosis nigricans are black brown velvety elevations of the epidermis. Differential diagnosis
Tracheal displacement from the midline may occur towards or away from the causative lesion.
Tunnel vision refers to peripheral constriction of the visual fields. Differential diagnosis.