Biopsis and Skin Grafts Flashcards
When is excisional biopsy used?
With suspicious melanoma (with deep or superficial lesions)
When is incisional biopsy used?
With squamous and basal cell carcinoma (with deep seated lesions)
When is punch biopsy used?
With venous ulcer suspected for malignancy and pager disease of breast (With superficial lesions)
When is true cut or core biopsy used?
With deep seated lesions as great masses
When is shaving biopsy used?
With seborrheic warts.
When is FNAB used?
Best for thyroid lesions
What are the types of grafts?
-Auto graft (from the same person)
-Isograft (from identical twin)
-Allograft (from another person)
-Xenograft (from animals)
Give example on isograft.
Kidney transplantation
Give example on autograft.
Skin grafting
What are the types of wound closure?
-Primary closure
-Delayed primary closure
-Secondary closure
When is primary closure encouraged?
With direct apposition of wound edges and clean wounds
When is delayed primary closure encouraged?
When the wound has to be left open for a period of time for the fear of infection in diabetic patients or patients on steroids.
When does secondary intention take place in a wound?
When the wound is left to heal with wound contracture as after drainage of abscess especially perinatal abscess
What is skin grafting?
The process of transferring a piece of skin with blood supply from one site to another and this requires a vascular used recipient site free from infection and malignancy
What are the types of skin grafting?
-Split thickness graft
-Full thickness graft
What are the uses of slain grafting?
-Split thickness graft is used mainly in burns because it can be meshed and covers a large area because the sonar site heals with re epithelization
-Full thickness graft is taken mainly from the post auricular skin and groin and covers small area because the donor site requires closure.
What is a flap?
It is a vascularized unit of tissue that is transferred from one site to another
What is the type of closure and flap in a dirty scalp laceration?
Primary closure with rotational flap
What is the type of closure and flap in a dog bit of a nose?
After immediate debridement, it heals with secondary intention and pedicle or local flap
What is the management plans for a pretibial laceration?
Without bone exposure: debridement and delayed spit thickness graft
With bone exposure: flap
What is the management plan for a heel/ bed pressure ulcer/sore?
-Debridement
-Healing with secondary intention
-definitive repair: flap
