leprosy n actinomycosis
DESCRIPTION
its a lecture of 2nd mbbs students which i have taken in last week.. hope u will enjoy itTRANSCRIPT
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Examples of Chronic Inflammation
• Tuberculosis Leprosy, Syphilis, Cat scratch
disease, Granuloma inguinale, Tularemia
• Fungal- Actinomycosis, Blastomycosis, Cryptococosis
• Parasitic- Schistosomiasis
• Sarcoidosis, Crohns, Foreignbody.
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?
The
Organism?How it enters in the body?
Which organs are affected?
Changes in the organs, Gross & Microscopy Complications and
fates of disease
How to make a Diagnosis ?
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Leprosy ~
Hansen’s disease
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Mycobacterium leprae
less acid fast .
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Transmission
Slow communicable
Incubation period – 3 yrs
Slow transmission
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Route :
‘Direct contact’
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Organs involved
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Classification
Lepromatous
Tuberculoid
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• T Lymphocytes
• IFN-Gamma • Macrophages • epitheloid • giant cells.
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Modified Ridley &
Jopling’s classification
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• TT – Tuberculoid polar• BT – Borderline tuberculoid• TI -- Tuberculoid indeinite• BB – Mid borderline• LI – Lepromatous indefinite• BL – Borderline lepromatous• LL – Lepromatous polar
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Other types:
1.Pure neural2.Histoid3. Indeterminate
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Lepromatous leprosy
Symmetrical,
Multiple,
Hypopigmented lesions
Leonine faces
Pts Immunity – down
Sensory deficit – less severe
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Histology
Foamy cells in the dermis, separated from Epidermis by Clear zone
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Tuberculoid leprosy
Single or few asymmetrical ,
Sensory impairment
HistologyTubercle,
dermal nerves,
No clear zone, few bacilli
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Lab Diagnosis
To show the organism
Skin clipping
Stains-
ZN, Fite Faraco,
Gomori methenamine silver
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Culture
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9 Banded Armadilo
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Reactions in Leprosy
Lepra type I
Lepra type II
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Lepra type I
Upgrading reaction
Downgrading reaction
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• TT – Tuberculoid polar• BT – Borderline tuberculoid• TI -- Tuberculoid indeinite• BB – Mid borderline• LI – Lepromatous indefinite• BL – Borderline lepromatous• LL – Lepromatous polar
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Lepra type 2
Erythema nodosum Leprosum
In Lepromatous patient
after treatment
Tender nodules, fever, synovitis,
Lymphnode enlargement
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Lepromin test
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Not for Diagnosis
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For classifying Leprosy
Depending on immune response.
24-48 Fernandez
3-4 wks Mitsuda reaction
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Baba Amte
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Actinomycosis
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Mycosis…Is it a fungus?
No
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Anaerobic
Bacteria
Actinomycetes israelii.
Commensal organism.
Endogenous infection.
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Types depending on sites
CervicofacialThoracic
AbdominalPelvic
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