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Samenvatting Endocrinologie - 2026

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Volledige samenvatting van het deel Endocrinologie uit het vak Chronische Aandoeningen.

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ENDOCRINOLOGIE
PROF VAN DER SCHUEREN, MATHIEU




INHOUDSOPGAVE

H1: OVERGEWICHT, OBESITAS EN LIPIDEN .................................................................................... 5

1. OBESITAS .......................................................................................................................................5
1. definitie en maatschappelijke context ........................................................................................5
2. Stigma en communicatie ...........................................................................................................6
3. Aanpak van obesitas: de 5 A’s ....................................................................................................6
4. ASSESS: klinische evaluatie (EXAMENZEER BELANGRIJK) ............................................................6
5. BMI: nut en beperkingen ............................................................................................................7
6. Gevolgen van obesitas ...............................................................................................................8
7. Klinische obesitas & staging .......................................................................................................8
8. Aanvullend onderzoek ............................................................................................................. 11
9. Energiehuishouding en pathofysiologie ..................................................................................... 11
10. Regulatie van voedselinname ................................................................................................. 13
11. Medicatie en obesitas ............................................................................................................ 13
12. Behandeling van obesitas ...................................................................................................... 14
2. LIPIDENSTOORNISSEN ...................................................................................................................... 21
A. Overzicht lipidentransport ....................................................................................................... 21
B. Stoornissen van lipidentransport .............................................................................................. 23
C. Behandeling van hyperlipidemie (LDL-gericht) .......................................................................... 25
D. dieet en lipiden ....................................................................................................................... 27
3. CASUSSEN .................................................................................................................................... 28
CASUS 1 – Obesitas: initiële evaluatie (Jolien, 23 jaar) ................................................................... 28
CASUS 2 – Energie-inname en dieetberekening (Jolien) ................................................................. 30
CASUS 3 – Snelle gewichtstoename door ziekte (Julien, 53 jaar) ..................................................... 31
CASUS 4 – Dyslipidemie bij jonge vrouw (Jolien, 23 jaar – versie 1) .................................................. 31
CASUS 5 – Dyslipidemie bij gezonde leefstijl (Jolien, 23 jaar – versie 2)............................................ 32
CASUS 6 – Ernstige hypertriglyceridemie ...................................................................................... 33
17. KERNBOODSCHAPPEN VOOR HET EXAMEN ........................................................................................... 33

H2: DIABETES ..............................................................................................................................34

A. DEFINITIE ..................................................................................................................................... 34
B. INDELING (ADA 2024) .................................................................................................................... 35
C. DIAGNOSE .................................................................................................................................... 35
D. TWEE SOORTEN DIABETES ................................................................................................................. 38
Type 1 diabetes mellitus .............................................................................................................. 38
Type 2 diabetes mellitus .............................................................................................................. 41
Zwangerschapsdiabetes ............................................................................................................. 43
E. VERWIKKELINGEN ........................................................................................................................... 44

, 1. Microangiopathie (specifieker voor diabetes) ............................................................................ 44
2. Macroangiopathie (atherosclerose) .......................................................................................... 46
3. Diabetische neuropathie (kliniek + screening) ........................................................................... 48
4. Dermatologische verwikkelingen .............................................................................................. 49
5. Diabetische voet (pathofysiologie – screening – aanpak) ............................................................ 50
6. Metabole coma’s (diagnose + behandeling + formules) .............................................................. 51
F. BEHANDELING ............................................................................................................................... 53
1. Behandeling type 1 diabetes .................................................................................................... 53
2. Behandeling type 2 diabetes .................................................................................................... 65
4. Behandel-doelen en follow-up ................................................................................................. 72
EXAMEN-TABELLEN ............................................................................................................................. 73

H3: SCHILDKLIERZIEKTEN ............................................................................................................75

CIJFERS VOORAF ................................................................................................................................ 75
A. EXPLORATIE VAN SCHILDKLIERZIEKTEN: PRINCIPES .................................................................... 76
I. VOORAF: FYSIOLOGIE .............................................................................................................. 76
II. KLINISCH ONDERZOEK ........................................................................................................... 80
III. TECHNISCHE ONDERZOEKEN ................................................................................................ 80
B. FUNCTIONELE SCHILDKLIERZIEKTEN ..................................................................................................... 82
1. Hypothyroïdie ......................................................................................................................... 83
2. Hyperthyroïdie ........................................................................................................................ 89
3. Subklinische (milde) schildklierdisfunctie ................................................................................. 98
subklinische hypothyroïdie ........................................................................................................ 100
4. laag T3 syndroom .................................................................................................................. 101
5. screening schildklierdisfunctie ............................................................................................... 102
6. thyroïditis .............................................................................................................................. 103
Indeling van thyroïditis............................................................................................................... 103
C. STRUCTURELE SCHILDKLIERZIEKTEN .................................................................................................. 109
1. Multinodulaire goiter (MNG) ................................................................................................... 109
2. Schildkliernodus & schildklierkanker ...................................................................................... 115

CASUSSEN SCHILDKLIER ........................................................................................................... 122

CASUS 1 — HYPOTHYROÏDIE (HASHIMOTO) .......................................................................................... 122
Klinisch denken ........................................................................................................................ 122
Diagnose .................................................................................................................................. 122
Behandeling ............................................................................................................................. 122
CASUS 2 — GRAVES HYPERTHYROÏDIE ................................................................................................. 122
CASUS 3 — TOXISCHE MULTINODULAIRE GOITER .................................................................................... 124
Klinisch denken ........................................................................................................................ 124
Biochemie ................................................................................................................................ 124
Beeldvorming ........................................................................................................................... 124
Diagnose .................................................................................................................................. 124
Behandeling ............................................................................................................................. 124
CASUS 4 — SCHILDKLIERNODUS ........................................................................................................ 125
CASUS 5 — POSTPARTUM THYROÏDITIS ................................................................................................. 126
SAMENVATTENDE TABEL .............................................................................................................. 126

H4: ZIEKTEN VAN DE HYPOFYSE ................................................................................................. 127

0. SNELLE ORIËNTATIE: WAT KAN MISGAAN? ............................................................................................ 127
A. ZIEKTEN VAN DE NEUROHYPOFYSE ..................................................................................................... 128

, 1) AVP-deficiëntie of -resistentie (diabetes insipidus) .................................................................. 128
2) SIADH (Syndrome of inappropriate ADH secretion) .................................................................. 131
samenvatting ............................................................................................................................ 133
B. ZIEKTEN VAN DE ADENOHYPOFYSE ..................................................................................................... 134
1) Insufficiëntie van de adenohypofyse (hypopituïtarisme) ........................................................... 134
2) Hyperfunctie van de adenohypofyse ....................................................................................... 138
C. HYPOFYSE-INCIDENTALOMA ............................................................................................................ 143
SAMENVATTING ................................................................................................................................ 144
CASUSSEN ...................................................................................................................................... 144
CASUS 1 – HYPERPROLACTINEMIE (PROLACTINOOM) ............................................................... 144
CASUS 2 – SIADH (HYPERSECRETIE ADH) .................................................................................. 145
CASUS 3 – DIABETES INSIPIDUS (CENTRAAL) ............................................................................. 146

H5: BIJNIERZIEKTEN ................................................................................................................... 147

0. BIJNIER ...................................................................................................................................... 147
A. ZIEKTEN VAN DE BIJNIERMEDULLA ...................................................................................................... 147
1) Insufficiëntie van het bijniermerg ............................................................................................ 147
2) Feochromocytoom (en paraganglioom) .................................................................................. 148
B. ZIEKTEN VAN DE BIJNIERSCHORS ....................................................................................................... 150
inleiding hormonen bijnierschors ............................................................................................... 150
1) Bijnierschorsinsufficiëntie (Addison en secundair/tertiair) ....................................................... 151
2) Hyperfunctie van de bijnierschors .......................................................................................... 154
3) Congenitale bijnierschorshyperplasie (CAH) ........................................................................... 161
4) hirsutisme-virilisatie .............................................................................................................. 162
C. BIJNIERINCIDENTALOMA ................................................................................................................. 163
HOE KLINISCH REDENEREN OVER BIJNIERHORMONEN EN HUN ZIEKTEBEELDEN .................................................. 164
CASUSSEN ...................................................................................................................................... 164
CASUS 1 – PRIMAIRE BIJNIERSCHORSINSUFFICIËNTIE (ADDISON) ............................................. 164
CASUS 2 – PRIMAIR HYPERALDOSTERONISME (CONN) .............................................................. 165
CASUS 3 – HYPERANDROGENISME (WAARSCHIJNLIJK CAH) ....................................................... 166
CASUS 4 – GEEN ENDOCRIENE PATHOLOGIE (VALSTRIK) ........................................................... 167

H6: ENDOCRINOLOGISCHE CALCIUM-FOSFAATSTOORNISSEN ................................................... 168

INLEIDING ...................................................................................................................................... 168
A. HYPOPARATHYROÏDIE .................................................................................................................... 170
A1. Etiologie ............................................................................................................................. 170
A2. Klinische presentatie ........................................................................................................... 172
A3. Diagnose ............................................................................................................................ 173
A4. Behandeling ........................................................................................................................ 173
B. PRIMAIRE HYPERPARATHYROÏDIE ....................................................................................................... 175
B1. Etiologie ............................................................................................................................. 175
B2. Klinische presentatie ........................................................................................................... 176
B3. Diagnose (logisch stappenplan) ........................................................................................... 177
B4. Behandeling........................................................................................................................ 178
C. SECUNDAIRE HYPERPARATHYROÏDIE .................................................................................................. 180
C1. Ontstaan ............................................................................................................................ 180
C2. Kliniek en biochemie ........................................................................................................... 180
C3. Behandeling (principe: fosfaat omlaag, actieve vit D waar nodig) ............................................ 181
METABOLE BOTZIEKTEN ...................................................................................................................... 182
1. OSTEOMALACIE EN RACHITIS ................................................................................................ 182

, 2. OSTEOPOROSE ..................................................................................................................... 186
ZEER BELANGRIJKE DIFFERENTIËLE TABELLEN .......................................................................... 190
CASUSSEN ...................................................................................................................................... 190
Casus 1 .................................................................................................................................... 190
Casus 2 .................................................................................................................................... 191
Zeer korte vergelijking van beide casussen ................................................................................. 193

H7: REPRODUCTIEVE ENDOCRINOLOGISCHE STOORNISSEN BIJ DE MAN .................................... 194

1. FYSIOLOGISCHE BASIS.................................................................................................................... 194
2. HYPOGONADISME BIJ DE MAN ........................................................................................................... 195
2.1 Definitie .............................................................................................................................. 195
2.2 Indeling ............................................................................................................................... 195
2.3 Kliniek ................................................................................................................................. 195
2.4 Diagnostiek ......................................................................................................................... 196
2.5 Belangrijke oorzaken ........................................................................................................... 197
2.6 Behandeling ........................................................................................................................ 197
3. PUBERTEITSSTOORNISSEN BIJ DE JONGEN ............................................................................................ 198
3.1 Vertraagde puberteit ............................................................................................................ 198
3.2 Vroegtijdige puberteit ........................................................................................................... 198
4. GYNAECOMASTIE .......................................................................................................................... 199
Oorzaken.................................................................................................................................. 199
Diagnostiek .............................................................................................................................. 199
aanpak ..................................................................................................................................... 200
5. INFERTILITEIT BIJ DE MAN ................................................................................................................. 200
pathofysiologie ......................................................................................................................... 200
Etiologie ................................................................................................................................... 200
Diagnostiek .............................................................................................................................. 201
Behandeling ............................................................................................................................. 204
8. CASUSSEN .................................................................................................................................. 205
CASUS 1 — man 29 jaar............................................................................................................. 205
CASUS 2 — MAN 31 JAAR ................................................................................................................. 207
1. Presentatie ........................................................................................................................... 207
2. Klinisch onderzoek ................................................................................................................ 207
3. Hormonale testing ................................................................................................................. 207
4. Genetische testing ................................................................................................................ 207
5. Diagnose .............................................................................................................................. 207
6. Behandeling .......................................................................................................................... 208
7. Examenkern .......................................................................................................................... 208

PRAKTIJKLES ............................................................................................................................. 209

EERSTE SITUATIE CASUS............................................................................................................... 209
1. Patiënt: PRESENTATIE ........................................................................................................... 209
2. ANAMNESE (SYSTEMATISCH)................................................................................................. 209
3. SCREENING DIABETESCOMPLICATIES ................................................................................... 210
4. KLINISCH ONDERZOEK ......................................................................................................... 211
5. DIFFERENTIAALDIAGNOSE VERMoeidHEID ............................................................................ 211
6. INITIEEL ONDERZOEK ............................................................................................................ 212
7. RESULTAAT EN DIAGNOSE .................................................................................................... 212
8. BEHANDELING HYPOTHYROÏDIE ........................................................................................... 213
TWEEDE SITUATIE (1 JAAR LATER) .................................................................................................. 213

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