Hi, This PPT is about understanding Soft tissue maggots... -Introduction -Classification of maggot -mode of acquiring infection -Site of involvement -Prevention -Histopathology diagnosis -Treatment You all can watch video regarding same in my You tube channel 'PATHOLOGY MASTER' Thank you. Like, share & subscribe my channel !! Enjoy.

1. SOFT TISSUE
MYIASIS

2. INTRODUCTION
 Parasitic infestation by fly larvae (maggots) that feed on
tissue.
So, Grow Inside the Host
Usually Maggot attract
toward open, dirty,
feces & urine
contaminated wound.
But some species can
infect unbroken skin
like Botfly / tumbu fly
(Cordylobia
anthropophaga)

3.  The name of the condition derives from ancient
Greek(myia), meaning "fly“.
Manifestations depend upon type of species & location of
wound.

4. SITE OF INFECTION
Usually affect open wound But Unbroken skin can also be
affected
It can enter through nose or ear as well
Larvae or eggs can reach the stomach or intestines if they
are swallowed with food and cause gastric or intestinal
myiasis
Various sites of involvement
: skin, eyes, ears, stomach
and intestinal tract, or in
genitourinary sites.

5. SIGN & SYMPTOMS
ACCORDING TO SITE OF
INVOLVEMENT
Cutaneous myiasis : Painful ulcer or Sore
Nasal myiasis : Obstruction of nasal passages and severe irritation. Sometime
cases facial edema and fever can develop
Aural myiasis : Ear discharge & pain. Can reach up to brain from middle ear
Ophthalmomyiasis : Eye pain, discharge can occur.Uveitis,Glucoma or RD can
develop

6. PREVENTION OF MAGGOT
INFECTION BY VECTOR CONTROL
Insecticides spray to kill larva where necessary
Sterile insect technique : where a significant number of
artificially reared sterilized (usually through irradiation) male
flies are introduced.

7. PREVENTION OF MAGGOT
INFECTION IN HUMAN
Personal hygiene
Regular cloth washing
Cloths should be ironed
Heat of iron kill larva or egg

8. HISTOPATHOLOGY OF SOFT
TISSUE LARVA
Cuticular spines on all body segments
Spiracular plat; spiracles open through sinuous slits
Insects have spiracles on their exoskeletons to allow air to
enter the trachea

10. CUTICULAR SPINES ON ALL
BODY SEGMENTS

11. TREATMENT
Remove maggot by forceps & pressure around wound
Wound debridement & cleaning with disinfectant
The easiest way to remove the larva is to first occlude the
opening of the furuncle (through which the larva breathes)
with an occlusive substance, such as petroleum jelly or soap
paste. Lack of oxygen then forces the larva to the surface,
where it can more easily be dealt with.

12. MAGGOT THERAPY
If maggot larva used therapeutically to clean necrotic wound
than it is called Maggot therapy

13. WATCH VIDEO OF THIS PPT ON MY
YOU TUBE CHANNEL ‘ PATHOLOGY
MASTER’