Nasal septal body and inferior turbinate sizes differ in subjects grouped by sex and age.

OBJECTIVES: To compare the size of the nasal septal body (SB) and inferior turbinate (IT) of subjects grouped by sex and age. METHOD: We measured SB and IT areas (in cm2) bilaterally in computed tomography (CT) sections of 150 para nasal sinuses from 72 males and 78 females. RESULTS: The right and left SB areas were smaller in females than in males. In the s25-year-old group, the right IT (RIT) was significantly smaller in females than in males. In the 26-35 and 46-45 age groups, the right SB (RSB) was significantly smaller in females than in males. CONCLUSION: The nasal SB may play a role in nasal physiology similar to a turbinate and help support optimal airflow. The vascular and glandular structures of the SB should be investigated in detail, and minimal invasive procedures should be performed in nasal surgery to avoid damaging essential structures.

Comparison of hippocampal volume measured using magnetic resonance imaging in Alzheimer's disease, vascular dementia, mild cognitive impairment and pseudodementia.

OBJECTIVE: To examine the relationship between different types of dementia and hippocampal volume. METHODS: Hippocampal volume was measured by magnetic resonance imaging in patients with Alzheimer's disease (n = 22), vascular dementia (n = 14), mild cognitive impairment (n = 12) or pseudodementia (n = 16), and in healthy control subjects (n = 11). The Mini Mental State Examination was used to stratify subjects according to cognitive function. RESULTS: Hippocampal volume was reduced by 42% in Alzheimer's disease, 21% in vascular dementia, 15% in mild cognitive impairment and 13% in pseudodementia compared with controls. The severity of dementia increased in line with decreasing hippocampal volume. CONCLUSIONS: Measurement of hippocampal volume may facilitate differentiation between dementia subtypes. There was a relationship between reduced hippocampal volume and the degree of cognitive impairment.