17 systemic dz Flashcards
MPS underlying process and two basic syndromes
lack of enzymes to process glycosaminoglycans eg heparin/dermatan/keratin/chondroitin sulfate
hurler, hunter
oral/facisl MPS
heavy brow ridges, impaected teeth w pronounced follicles, macroglossia
lipid reticuloendothelioses fka, inheritance, underlying
AR, “lipid storage dzz”
no enzymes to process certain lipids
Gaucher what’s lacking, what’s accumulating
lacks glucocerebrosidase
accum glucosylceramide
Niemann-Pick what’s lacking, what’s accumulating
lacks acid sphyngomielinase
accum sphyngomyelin
Tay-Sachs what’s lacking, what’s accumulating
lacks beta-hexosaminidase A
accum ganglioside
Gaucher bones
Erlenmeyer glask deformity of femus
Niemann-Pick type with identified gene
type C – NPC-1/2 gene mutation
gaucher cells
lipid laden macrophages with bluish cytoplasm, wrinkled silk
NPC-1/2 gene mutation
Niemann-Pick type C
accum glucosylceramide
Gaucher
lacks glucocerebrosidase
accum glucosylceramide
lacks glucocerebrosidase
Gaucher
lacks glucocerebrosidase
accum glucosylceramide
lacks acid sphyngomielinase
Niemann-Pick
lacks acid sphyngomielinase
accum sphyngomyelin
accum sphyngomyelin
Niemann-Pick
lacks acid sphyngomielinase
accum sphyngomyelin
accum ganglioside
Tay-Sachs
lacks beta-hexosaminidase A
accum ganglioside
lacks beta-hexosaminidase A
Tay-Sachs
lacks beta-hexosaminidase A
accum ganglioside
lipid laden macrophages with bluish cytoplasm, wrinkled silk
gaucher cells
niemann pick histo
bone marrow aspirate: sea blue histiocytes
sea blue histiocytes
niemann pick bone marrow aspirate
lipoid proteinosis aka, inheritance, clinical process, mutation
aka Urbach-Wiethe syndrome; hyalinosis cutis and mucosae
AR, deposition of waxy material in dermis and submucosa
ECM1 gene mutation
ECM1 gene mutation
lipoid proteinosis
deposition of waxy material in dermis and submucosa
lipoid proteinosis
first sign of lipoid proteinosis
infant hoarse crying or unable to cry
jaundice molecular reason and causes
exces Bb in blood and tissue
hemolytic anemia, liver malfunction, Gilbert syndrome (unconjugated Bb)
types of amyloid and where seen
AL – amyloid IG light chain (organ limited, primary, and myeloma assoc)
AA – acute phase proterin (secondary)
Abeta2 microglobulin – hemodyalisis assoc
hemodialysis amyloid
Abeta2 microglobulin
acute phase amyloid
secondary – AA
myeloma amyloid
AL – amyloid light chain
primary amyloid
AL – amyloid light chain
retinol aka
vit A
thiamin aka
B1
B1 aja
thiamin
vit A aka
retinol
B2 aka
riboflavin
riboflavin aka
B2
B3 aka
niacin
niacin aka
B3
pyridoxine aka
B6
B6 aka
pyridoxine
biotin aka
B7
B7 aka
biotin
folic acid aka
B9
B9 aka
folic acid
B12 aka
cobalamin
cobalamin aka
B12
B3 defcy
pellagra (3Ds)
pellagra
B3 defcy (3Ds)
vit D defcy
rickets/osteomalacia
Wernicke’s encaphalopathy
B1 def
vomiting, nystagmus, mental retardation
plummer vinson components
Fe def anemia, glossitis, dysphagia
Fe def anemia, glossitis, dysphagia
plummer vinson
spoon shaped nails
koilonychia, plummer vinson
koilonychia
spoon shaped nails, plummer vinson
pernicious anemia
autoimmune vit b12 defcy
vit b12 defcy can be seen in other conditions
test to compare absorption and excretion of b12
Schirling test
Schirling test
test to compare absorption and excretion of b12
pituitary dwarfism whats up
low grwoth hormone production or tissues nt responding to growth hormone
gigantism whats going on and when seen
increased growth hormone production (usually 2/2 pituitary adenooma) before epiphyseal plates close
20% cases 2/2 McCune-Albright syndrome
increased growth hormone possibel scenarios
if before epiphyseal plates close –> gigantism
if after –> acromegaly
hypothyroid in infancy
cretinism
hypothyroid –> gags
myxedema
hyperthyroid aka
thyrotoxicosis and Grave’s dz
thyroid storm
release of large amts of T4 (eg after infx, stress)
hypoparathyroid conditions
DiGeroge and APECED
twicthing of upper lip when facial nerve is tapped below zygoma
Chvostek sign – hypoCaemia
Chvostek sign
twicthing of upper lip when facial nerve is tapped below zygoma - hypoCaemia
primary and secondary hyperparathyroid
primary – gland adenoma
secondary – chronic low Ca
classic triad of hyperparathyroid
stones (kidney) bones (variety of changes) abdominal groans (duodenal ulcers)
osteitis fibrosa cystica
central degeneration and fibrosis of long standing brown tumors
central degeneration and fibrosis of long standing brown tumors
osteitis fibrosa cystica
renal osteodystrophy
brown tumors in ESRD
brown tumors in ESRD
renal osteodystrophy
Cushing syndrome
hypercortisolism (called Cushing dz if endogenous)
buffalo hump, moon face, HTN, DM
moon face
Cushing – hypercortisolism
Addison’s dz primary and secondary
primary hypoadrenocorticism (eg autoimmune, infx, tumors) or secondary (low ACTH)
addisonian crisis
acite episode of hypoadrenocorticism 2/2 ACTH suppression by corticoids
acite episode of hypoadrenocorticism 2/2 ACTH suppression by corticoids
addisonian crisis
oral consequences of diabetes
delayed healing, SG enlargement, gingival enlargement, fungal infx (Candida, Mucor), dry mouth, erythema migrans
buffalo hump
Cushing
hypophosphatasia mechanism and mouth
defcy of alkaline phosphatase
premature loss of teeth 2/2 lacks cementum
defcy of alkaline phosphatase
hypophosphatasia
premature loss of teeth 2/2 lacks cementum
hypophosphatasia
vit D resistant rickets mutation
PHEX
PHEX
vit D resistant rickets
pyostomatitis vegetans manifestation of –
Crohn’s or UC
snailk track ulcerations
pyostomatitis vegetans manifestation of Crohn’s or UC
uremic stomatitis whats up
increased urea levels in chronic renal failure
increased urea levels in chronic renal failure
uremic stomatitis
face of mucopolysaccharidosis
cloudy cornea, heavy brow ridges, stiff joints, mental retardation
oral MPS
gingival hyperplasia, impacted teeth with pronounced follicle, macroglossia
examples of mucopolysaccharides (and aka?)
glycosaminoglycans
heparin, dermatan, keratan, chondroitin sulfate
examples and inheritance of MPSs
AR except Hunter – XLR
Hurler, Scheie, Hunter, Sanfillippo (A/B), Morquio (A/B), Maroteux-Lamy
lipid storage diseases better group name, examples, inheritance
AR, lipid reticuloendothelioses
lipids accumulate in macrophages
Gaucher, Niemann-Pick, Tay-Sachs
most common lipid storage disease
Gaucher
clinical types of gaucher
type 1 - non-neuronopathic, most in jewish
types 2 and 3 - neuronopathic
niemann pick with known mutation
NPC-1 type C
lipoid proteinosis inheritance and mutation
AR - ECM1
face/head/mouth of lipoid proteinosis
face: thick yellow papules in lips and eyelids
thick furrowed skin
symmterical intrcranial calcifications
oral – enlargement of tongue, lips, cheek;
smooth tongue can attach to floor of mouth
PAS quality in lipod proteinosis
PAS+
hemoglobin breakdown cascade
Hb–> Bb –> unconj in blood –> conj in liver –> excretion in bile
unconjugated bilirubin excess
Gilbert syndome
possible causes of excess Bb
hemolytic anemia, sickle cell anemia
liver malfunction
Gilbert syndome
reduced excretion in bile
ddx for jaundice
hypercarotenemia – skin is yellow but sclera is not
protein structure of amyloid
beta sheets
amyloidosis by involvement
organ limited and systemic
types of systemic amyloid
primary; myeloma-assoc; secondary (TB, sarcoid, osteomyelitis); hemodyalisi assoc; heredofamilial
amyloid death
2/2 kidney or heart failure
molecular types of amyloid
AL – organ limited, primary, myeloma assoc (Ig light chain)
AA - secondary (acute phase)
b2 microglobulin – hemodialysis
scurvy underlying mechanisms
vit c reqd for post-translational proline hydroxylation of collagen chains –> weak vascular walls
bad healing
scorbutic gingivitis
rachitic rosary
prominence of costochondral junctions
prominence of costochondral junctions
rachitic rosary
symptoms of osteomalacia
bone fragility, fractures, pain
vit e defcy who’s at risk
children w chronic cholestatic liver disease and malabsorption
–> CNS issues
risk for vit k defcy
malabsorption syndromes, abx, anticoagulants
most common anemia in US
fe def
most common form of anemia in world
fe def
reasons for fe def anemia
blood loss (menorrhagia, GI dusease)
need for RBC (pregnancy)
low iron intake (children, elderly)
low Fe absoprtion (celiac)
oral signs of fe def anemia
angular cheilitis and atrophic glossitis or generalized oral mucosa atrophy
painful tongue
achlorhydria
absence of gastric acid –> fe def anemia
howell jolly bodies
clusters of DNA in circulating RBCs – Fe def anemia
plummer vinson aka
patterson kelly or sideropenic dysphagia
components of plummer vinson
fe def anemia, glossitis, dysphagia, angular cheilitis, esophageal wevs (abnormal bands of tissue)
increased risk for oral and esophagela SCC
spoon nails
spoon nails
koilonychia: plummer vinson
pernicious anemia aka and whats up
megaloblastic enamia
vut b 12 deficiency (cobalamin)
autoimmune destruction of intrinsic factor (needed for b12 absoprtion)
pernicious anemia also concurrent with
autoimmune gastritis
oral pernicious anemia
burning mouth, erythema/atrophy of tongue (may present as focal patchy areas)
compares absorption and excretion rates of vit b 12
schirling test
pernicious anemia diagnosis
serum AB against intrinsic factor
causes of pituitrary dwarfism
low GH production by anterior pituitary or tissues not responding to growth hormone
2/2 gland aplasia/hypoplasia
or destruction of pituitary/hypothalamus (RT, tumor)
pituitary dwarfism body morphology and oral
short stature but normal proportions
smaller mx/md; delayed eruption, smaller teeth
gigantism timing
increased GH (usually from adenoma) before closure of epiphyseal plates
gigantism association
20% cases with McCune-Albright
gigantism head
enlarged sella bc adenoma
oral – generalized macrodontia
enlarged sella in skull
pituitary adenoma – gigantism
closure of epiphyseal plates interferences
growth hormone:
- before closure –> gigantism
after closure –> acromegaly
common cause of acromegaly
increased GH (usually pituitary adenoma) after closure of epiphyseal plates
other problems in acromegaly
HTN, CHD, hyperhidrosis, arthritis, peripheral neuropathy
bones of hands and feet grow –> gloves and hats become small
orofacial acromegally
MD prognathism, anterior open bite, diastema, macroglossia, sleep apnea
coarse face
two types of hypothyroidism
cretinism – in infancy (teeth fail to erupt)
myxedema – long standind –> spotigion of glycosaminoglycans
pimrary vs secondary hypothyroidism
primary – most cases; problem in thyroid
secondary – pituitary not procuding TSH
example of destruction of thyroid
hashimoto
myxedema systemic and oral
decreased metabolism – bradycardia, hypothermia
facial, lip, tongue swelling
labs in hypothyroid
low T4 TSH elevated (primary) or normal (secondary)
most common cause of hyporthyroid
90% - graves dz
auto AB to TSH receptors stimulate thyroid cells
graves dz general presentation
warm moist skin, fine tremor, sensitivity to heat, diffuse thryoid enlargement, exophthalmos
non graves causes of hyperthyroid
thyroid tumors (produce hormones) and pituitary adenoma (produces TSH)
hyperthyroid labs
high T4, low TSH
hyperthyroid treatment
radioactive iodine (risk of hypothyroid)
thyroid storm
release of large amounts of T4 at one time – eg after infx, trauma, stress
delirium, convulsion, fever tachycardia
PTH function
takes Ca from bone to blood, in conjunction with Vit D
causes of hypoPTH
surgical removal of parathyroid or autoimmune
2 syndromes with hypoPTH
diGeorge and APECED
Ca levels in hypoPTH
hypoCaemia but asymptomatic; may lead to tetany tho
chvostek sign for what and how
hypoCaemia
twitching of upper lip when facial nerve is tapped below zygoma
twitching of upper lip when facial nerve is tapped below zygoma
chvostek sign
hypoCaemia
test for hypoCaemia
chvostek sign
twitching of upper lip when facial nerve is tapped below zygoma
teeth in hypoPTH
if young – enamel pitting and failure of teeth to eript
persistent oral candidiasis in a young patient
APECED
labs and tx for hypoPTH
low PTH and Ca
tx - vit D precursors
pseudohypoPTH aka and what is
Albright hereditary osteodystrophy; acrodysostosis
normal levels of PTH but dysfx pathway – symptoms of hypoPTH
types of pseudohypoPTH
1a – Gsa defect, cAMP defcy; most common. obesity, short neck, short/thick fingers, round face, osteoma cutis, hypogonadism, hypoTHY
1b - PTH receptors, pt normal but w hypoCaemia
Ic - adenylate cyclase of Gsa, same as Ia
II - cAMP induced but cells don’t respond. pt normal but hypoCaemia
pseudohypoPTH when pt normal but hypoCaemia
Ib – PTH recepetors
and II - cAMP induced but cells don’t respond. pt normal but hypoCaemia
pseudohypoPTH and obesity
Ia ( Gsa defect, cAMP defcy; most common. obesity, short neck, short/thick fingers, round face, osteoma cutis, hypogonadism, hypoTHY)
and Ic - adenylate cyclase of Gsa, same as Ia
pseudohypoPTH when no PTH receptors
1b - PTH receptors, pt normal but w hypoCaemia
Gsa defect and cAMP
cAMP deficient – pseudohypoPTH type Ia
cAMP induced – type Ic
dental pseudohypoPTH
enamel hypoplasia, oligodontia, dagger-shaped pulp stones, blunt apices
dagger-shaped pulp stones and blunt apices
pseudohypoPTH
labs and tx for pseudohypoPTH
dx: elevated PTH but low Ca
tx: vit D and Ca
primary vs secondary hyperPTH
primary – 90% gland adenoma
secondary – chronic low Ca from chronic renal dz; vit D not activated and Ca not absorbed
function of PTH
mobilization of Ca from bone
increases renal tubular reabsorption of Ca
promotes renal prodiction of ,25 dihydroxyvitD
increases serum Ca
hyperPTH syndromes
MEN1 and MEN2A and hyperPTH-jaw tumor syndrome
hyperPTH triad
kidney stones (elevated Ca), bones (various), abdominal groans (duodenal ulcers)
central degeneration and fibrosis of long standing brown tumor
osteitis fibrosa cystica – hyperPTH
brown tumor
hyperPTH
renal osteodystrophy and PTH
secondary hyperPTH
striking jaw enlargement
bones of hyperPTH
brown tumor, subperiosteial bone resopriton (esp phalanges), generalized osteopenia, loss of lamina dura, blurring of trabeculae (ground glass)
hyperPTH relevant histo
CGCG –
trabeculare of woven bone + giant cells in fibrous background
adrenal hormonal pathway
pituitary: ACTH –> adrenal: corticoids
cushing syndrome vs cushing dz
exogenous corticouds – syndrome
endogenous (adrenal/pituitary adenoma) Cushing dz (rare, most in young F)
cushing aka
hypercortisolism
hypercortisolism signs
central weight gain, buffalo hump, moon facies, HTN< diabetes, osteoporosis
dexamethasone test
normal pts – cortisol and ACTH decrease
tumors don’t respond to feedback loop
addisonian crisis
acute episode of hypoadrenocorticism
after withdrawal of corticoids (drugs suppress pituitary – can’t produce ACTH)
nevi, atrial muxoma, myxoid NF, ephelides, hypercortisolism
subest of Carney complex
hypoadrenocorticism aka
addison’s dz
low corticosteroids 2/2 adrenal dysfx
causes of addison
autoimmune, infections (TB, deep fungal (histo, PCM), mets, sarcoid, amyloid
fungi that can destroy adrenals
histoplasma and paracoccidio
secondary hypoadrenocorticism
low corticoids 2/2 low ACTH from pituitary dysfx
how soon does hypoadrenocorticism manifest
only when 90% of gland destroyed
skin in addison
bronzing
increased beta-lipotropin and ACTH stimulate melanocytes
addison + hypoparatHY + mucocutaneous candidiasis
APECED
oral addison
diffuse pigmentation of oral mucosa sudden onset (vs physiologic)
addison labs
low serum cortisol (<20 ug/dL) high ACTH (primary) or low ACTH (secondary)
sheehan syndrome
acute adrenal cortical insufficiency caused by meningococci
acute adrenal cortical insufficiency caused by meningococci
waterhouse friedrichsen
diabetes: type 1 vs type 2
type 1 - insulin dependent (lack insulin; AI destruction of pancreas islet cells)
type 2 - non insulin dependent – insulin resistance; genetic + environmental
ketoacidosis
more common in DM type 1
no glucose –> fat and protein used for energy –> ketones as byproduct
blood vessels and diabetes
microangiopathy: occlusion of small vessels 2/2 uptake of glucose by EC
- -> peripheral vascular dz, ischemia –> renal failure, gangrene of limbs, neuropathy, inability to figh infx, infarct, stroke, blindness
diabetic nephropathy
2/2 microangiopathy
aka kimmelstein-wilson dz
kimmelstein-wilson dz
diabetic nephropathy
oral DM
perio dz, delayed healing, sialadenosis, gingival enlargement, fungal infx (candida and mucor), xerostomia
metformin action
increases glucose use, reduces insulin resistance
insulin shock
type 1 pt:
if no carbs right after insulin injection, glucose levels may fall dramatically (below 40mg/dL)
hypophosphatasia what’s the defect
deficiency of alkaline phosphatase
- reduced alk phos in bone, liver, kidney
increased blood and urinary phosphoethanolamine - bone abnormalities similar to rickets
hypophosphatasia forms and features
perinatal – death in a few hours 2/2 respir failure
infantile – short bowed limbs (6months and older), similar to rickets
premature shedding of deciduous teeth (teeth lack cement)
childhood: loss of primary teeth (mostly incisors), bowed legs, short stature; beaten copper skull (uniformly spaced, poorly defined radiolucency) 2/2 thinning of cortical plate
adult: mild disease; history of loss of primary or permanent dentition
hypophosphatasia labs
clinical + low serum alk phos + high serum phosphoethanolamine
vit d resistant rickets what is
clinical features of rickets but no response to vit D tx
vit d resistant rickets genetics and inheritance
PHEX
X-linked dominant
F affected less severely 2/2 lyonization
labs and looks of vit d resistant rickets
rachitic changes + hypophosphatemia + decreased reabs of P in kiney
short stature, bowed lower limbs
teeth of vit d resistant rickets
enlarged pulps, elongated pulp horns extend into incisal edge just below DEJ
large calcospherites of globular dentin
small exposures cau cause necrosis in healthy teeth –> multiple abscesses in primary dentition
enlarged pulps, elongated pulp horns extend into incisal edge just below DEJ
lage calcospherites of globular dentin
vit d resistant rickets
tx for vit d resistant rickets
calcitriol and phosphate
vit d dependent rickets inheritance and defect
AR, lacks 1 alpha hydroxylase (activates vit D)
vit d dependent rickets teeth
hypocalcification of teeth
hypocalcification of teeth which rickets
vit d dependent
elongated pulp horns extend into incisal edge just below DEJ which rickets
vit d resistant
vit d dependent vs resistane rickets teeth
dependent – hypocalcification; resistant – elongated pulp horns extend into incisal edge just below DEJ
crohn’s site of action
affects distal portion of small bowel and proximal colon (skip lesions)
can affect any region from mouth to anus
also extra-GI like eyes, skin
skip lesions which affliction
crohn’s
how common is oral crohn’s and what are the varieties
first sign of dz in 30% of cases
swelling of oral tissues, cobblestone, deep granulomatous ulcers (linear and in buccal vestibule)
also Inflammatory fibrous hyperplasia like or aphthous like
mucognigivitis (patchy erythematous macules and plaques)
pyostomatitis vegetans look and reason
inflammatory bowel dz - Crohn’s and ulcerative colitis
yellowish linear serpentine pustules over erythematous mucosa (snail track ulcerations)
(snail track ulcerations)
pyostomatitis vegetans
pyostomatitis vegetans locations
buccal/labial, soft palate, ventral tongueu
histo pyostomatitis vegetans
acantholytic with intra or subepithelial eosinophilic abscesses
acantholytic with intra or subepithelial eosinophilic abscesses
pyostomatitis vegetans
uremic stomatitis reason
urease degrades urea in saliva and releases ammonia –> damages oral mucosa
uremic stomatitis locations
painful white plaques, cheek, tongue, FOM
uremic stomatitis ddx and how
oral hairy leukoplakia
ammonia/urine odor
uremic stomatitis tx
clears with dialysis in up to 3 weeks
also helps to dilute H2O2 as rinse
gaucher, niemann-pick, tay-sachs
what’s lacking
what accumulates
where
Gaucher: glucocerebrosidase; glucosylceramide in lysosomes of macrophages
NP: sphingomyelinase: sphingomeyline in lysosomes of macrophages
Tay-Sachs: beta-hexosaminidase - gandlioside in lysosomes of neurons
neuronopathic niemann pick types
A and C
visceral involvement niemann pick
type B - liver, spleen, lung
molecular/cellular source of lipoid proteinosis
collagen 4, 5, laminin
from basement membrane
lipoid proteinosis brain
medial temporal lobe calcifications in 70% –> seizures
three stains of amyloid
1-congo red
2-Crystal violet
3-thioflavineT
blindness vitamin
A
beri beri vitamin
B1 (thiamin)
pellagra vitamin
B3 (niacin)
rachitic rosary
prominence of costachondral junction in Vit D resistant Rickets (looks like
beads / nodules)
dagger pulp
pseudohypoPTH
high PTH, low serum Ca, high serum P, normal renal dx
pseudohypoPTH
common cause of hypoTHY
hashimoto
labs in thyroid
primary hypo: low T4, high TSH
secondary hypo: low T4, normal TSH
hyperTHY: high T4, low TSH
common cause of hyperTHY
graves (autoAB to TSH receptors –> make T4)
low PTH, low serum Ca, , high P, Normal
Kidney
hypoPTH
chromosome digeorge and aka
22
velo-cardiofacial
ground glass
fibrous dysplasia and hyperPTH
synromes w primary hyperPTH
MEN1, MEN2A
high PTH, high Ca
pimary hyperPTH
high PTH, low Ca
secondary hyperPTH
resorption of middle and index finger
hyperPTH
addison labs
Hyponatremia = low soium / crave salt
Low cortisol : 18μg
Primary: High ACTH ( over 100ng/L )
salt craving
addison
Hypoparathyroidism
Hypoaldosteronism
Candida
Polyendocrinopathy –candida-ectodermal
dystrophy syndrome:
(20mg of
prednisone on a daily basis for several
months)
cushing
cushing face, body
Buffalo hump / moon face / weight gain Red / purple abdominal striae Hirsutism Osteoporosis Depression Hyperglycemia with thirst and polyuria Poor healing
Suppress production of
ACTH in Pituitary gland and cannot respond to
stress due to exogenous corticosteroids
Addisonian crisis:
biggest killer in diabetes
peripheral vascular disease
insulin shock
below 40mg/dl
sugar concentration at which kidney can’t absorb
over 300 mg.dL
head and neck diabetes
Microangiopathy Diabetic sialadenosis Oral canida Mucormycosis Goegraphic tongue xerostomia
types of hypophosphatasia
- Perinatal letha: death within hours
- Perinatal benign
- Infanile nomal upo 6m hen failure to grow
- Childhood: Pemature closue of cranial sutures /beaten copper
- Adult: Metatarsal bones of feet
- Odonohypophosphatasia: Premature loss of anterior teeth is the only clinical sign
labs in hypophosphatasia
low alk phos, high serum and urine phosphotheanolamine
rickets inheritance
vit d resistant – XLD
vit d dependent – AR
PHEX
vit d resistant rickets
1α-hydroxylase
vit d dependent rickets
snail track
Pyostomatitis vegetans:
associated with crohn or ulcerative colitis
uremic stomatitis ddx
oral hairy leukoplakia