Pathology Flashcards
What are the two fixatives of choice to stop the decay of tissue specimens?
- Formaldehyde
- Formalin
Three criteria for a fever of unknown origin
- Fever higher than 38.3c on several occasions
- Duration of fever for at least three weeks
- Uncertain diagnosis after one week of hospital study
What is the most common abnormal PAP test finding?
Atypical squamous cells of undetermined significance (ASC-US)
Which pathologic examination technique is used for the confirmation of herpes?
Tzanck preparation
- uses freshly opened vesicles
This pathology examination technique is used to differentiate lymphomas, melanomas, CMV, toxoplasma, hormone receptors, oncogene products, etc
Immunofluorescence
Explain the process of obtaining a scabies scraping
- # 15 blade moistened with oil
- Scrape burrow or papule vigorously
- Black speck may be adult mite
Which type of pathology examination utilizes antibody binding to show the presence of an antigen?
Immunofluorescence
What type of sample is required for the confirmation of herpes lesions?
Tzanck preparation
- requires the scraping of a freshly opened vesicle
USPSTF screening guidelines for cervical cancer
- 21 to 29 = PAP every 3 years
- 30 to 65 = continue as above or HPV with/without PAP every 5 years
Ewing’s sarcoma is most often seen in this area of a bone
Metadiaphysis
Which CIN (cervical intraepithelial neoplasm) levels correspond with LSIL and HSIL?
LSIL: CIN 1
HSIL: CIN 2, CIN 3
Two screening tests for cervical cancer
- Pap smear
- HPV testing
Most common type of carcinoma in cervical cancer
Squamous cell carcinoma
Which type of lesions are KOH scrapings typically used on?
Scaly lesions
(KOH good for fungal infections)
This type of pathology examination is used for the immediate diagnosis of syphilis
Darkfield examination