DISORDERS OF THE CHIASM 1. Anatomy 2. Pituitary adenomas • Basophil adenoma Notes | EduRev

Created by: Akshit Kapoor

: DISORDERS OF THE CHIASM 1. Anatomy 2. Pituitary adenomas • Basophil adenoma Notes | EduRev

 Page 1


DISORDERS OF THE CHIASM 
1.  Anatomy 
2.  Pituitary adenomas 
•  Basophil adenoma 
•  Acidophil adenoma 
•  Chromophobe adenoma 
3.  Craniopharyngioma 
4.  Meningioma 
Page 2


DISORDERS OF THE CHIASM 
1.  Anatomy 
2.  Pituitary adenomas 
•  Basophil adenoma 
•  Acidophil adenoma 
•  Chromophobe adenoma 
3.  Craniopharyngioma 
4.  Meningioma 
Anatomy of chiasm and pituitary gland 
Upper nasal fibres 
Macular fibres 
Lower nasal fibres 
Anterior clinoid 
Pituitary gland 
III rd ventricle 
Craniopharyngioma 
Optic chiasm 
Diaphragma sellae 
Posterior clinoid 
Dorsum sellae 
Page 3


DISORDERS OF THE CHIASM 
1.  Anatomy 
2.  Pituitary adenomas 
•  Basophil adenoma 
•  Acidophil adenoma 
•  Chromophobe adenoma 
3.  Craniopharyngioma 
4.  Meningioma 
Anatomy of chiasm and pituitary gland 
Upper nasal fibres 
Macular fibres 
Lower nasal fibres 
Anterior clinoid 
Pituitary gland 
III rd ventricle 
Craniopharyngioma 
Optic chiasm 
Diaphragma sellae 
Posterior clinoid 
Dorsum sellae 
Normal anatomical variations 
Central - 80% 
Prefixed - 10% Postfixed - 10% 
Page 4


DISORDERS OF THE CHIASM 
1.  Anatomy 
2.  Pituitary adenomas 
•  Basophil adenoma 
•  Acidophil adenoma 
•  Chromophobe adenoma 
3.  Craniopharyngioma 
4.  Meningioma 
Anatomy of chiasm and pituitary gland 
Upper nasal fibres 
Macular fibres 
Lower nasal fibres 
Anterior clinoid 
Pituitary gland 
III rd ventricle 
Craniopharyngioma 
Optic chiasm 
Diaphragma sellae 
Posterior clinoid 
Dorsum sellae 
Normal anatomical variations 
Central - 80% 
Prefixed - 10% Postfixed - 10% 
Pituitary adenomas 
Cushing syndrome 
ACTH 
Growth hormone 
Acromegaly Gigantism 
Amenorrhoea 
Infertility 
Galactorrhoea 
Hypoglandism 
Impotence 
Infertility 
Gynaecomastia 
Galactorrhoea 
PROLACTIN 
Chromophobe 
Page 5


DISORDERS OF THE CHIASM 
1.  Anatomy 
2.  Pituitary adenomas 
•  Basophil adenoma 
•  Acidophil adenoma 
•  Chromophobe adenoma 
3.  Craniopharyngioma 
4.  Meningioma 
Anatomy of chiasm and pituitary gland 
Upper nasal fibres 
Macular fibres 
Lower nasal fibres 
Anterior clinoid 
Pituitary gland 
III rd ventricle 
Craniopharyngioma 
Optic chiasm 
Diaphragma sellae 
Posterior clinoid 
Dorsum sellae 
Normal anatomical variations 
Central - 80% 
Prefixed - 10% Postfixed - 10% 
Pituitary adenomas 
Cushing syndrome 
ACTH 
Growth hormone 
Acromegaly Gigantism 
Amenorrhoea 
Infertility 
Galactorrhoea 
Hypoglandism 
Impotence 
Infertility 
Gynaecomastia 
Galactorrhoea 
PROLACTIN 
Chromophobe 
Cushing syndrome  
• Moon face, pigmentation and 
  hirsutism  
•  Hypertension and diabetes 
• Obesity, skin striae, bruising and  
  muscle weakness 
• Ankle oedema and osteoporosis 
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