Exfoliative cytology

(desquamated (shed)) (spontaneously shed) (physically removed) (cellular turnover and replacement) (normal cells) (decreased intercellular adhesion)

	Microscopic study of cells (___________) from epithelial surfaces
	Cells are either (___________) into body fluids or (________) via clinical procedures.
	Based on the physiological principle of constant (___________&___________).

	Cancerous cells shed more readily than (______) due to (__________________).

(voided fluids) (urine, sputum, or vaginal secretions) (spatula or brush) (cotton swabs or suction) (Irrigating a cavity) (dislodge cells.) (Cervical, vaginal, and endometrial surfaces.)

Clinical Applications & Cancer Staging

Spontaneous Collection:	:Cells found in naturally (_______) (e.g., (_______, _____, _____).
Mechanical Collection: Scraping:	Using a (____/_____) (e.g., Pap smear).
Swabbing/Aspirating:	Using (____/_____)

Washing:	(_________) (e.g., bronchial washing) to (___________)
Common Sites:	(_____, _____, ________)

(Malignancy Detection:) (Precancerous Screening:) (Pap Smear) (Infection Identification:) (Prevention)

Clinical Applications & Cancer Staging

(______)	Identifying cancer cells in body fluids to determine the stage of disease.
(_______)	Primary use in detecting cervical lesions via the (____)
(________)	Identifying viral (e.g., HPV, Herpes), bacterial, or fungal agents within the smear.

(_______)	The goal is early intervention before a lesion becomes invasive.

(Maturation Index (MI): () () () ()

(_______)	Microscopic evaluation of lateral vaginal wall smears to assess female hormonal status.
(_______)	Used to investigate cases of sterility or specific endocrine disorders.
(_________)	Identification of the Barr Body (condensed X chromosome) in buccal or vaginal mucosa.

Chromatin Pattern:	Females (XX) typically exhibit this chromatin conglomeration; males (XY) do no

(Reduced Intercellular Adhesion:) (Site Specificity for MI:) (lateral vaginal wall.) (The "Golden Rule" of Fixation:) (95% Ethyl Alcohol) (Barr Body Identification:)

Clinical Pearls for Medical Technologists

(_________)	Malignant cells shed easier than normal cells because they lose their "cellular glue" (desmosomes).
(___________)	Hormonal evaluation (Maturation Index) requires samples specifically from the (____________)

(_________)	Smears must be fixed in (__________) while still wet to prevent air-drying artifacts.
(_________)	Seen in female (XX) nuclei as a dark, plano-convex mass of chromatin attached to the nuclear

(Wet Fixation) (Lateral Vaginal Wall) (Buccal Mucosa)

Clinical Pearls for Medical Technologists

Feature	Clinical Significance
(_______)	Prevents nuclear distortion and loss of detail.
(_______)	Most sensitive site for hormonal (endocrine) changes.

(________)	Preferred site for rapid genetic sex determination.

(Slide Labeling:) (Fixation Standard:Wet-fix) (Avoid Air Drying:) (Exceptions:)

(air-dried)

General Smear Preparation

(_______)	Use frosted-end slides or a diamond-point pen; include patient ID, date, and specimen type.
(________)	(_________) immediately in 95% ethanol to preserve fine chromatin structure.
(_______)	Essential for neoplasia detection; air drying distorts cells and creates artifacts.

(_______)	Blood films and bone marrow smears are typically (_________) rather than wet-fixed.

(Screening Goal:) (Patient Prep:) (coitus/douching) (Timing:) (menstruation) (Wooden spatulas (better grip) or cytobrushes)

The Pap Smear (Cervical Cytology)

(________)	Detection of cervical cancer at the pre-invasive (precancerous) stage
(________)	Abstain from (________) for 24 hours; no intravaginal meds for 1 week.
(________)	Avoid collection during (_________) due to blood and debris obscuring cellular detail

Tools:	(_____________) are preferred over cotton swabs.

(three) (early morning "deep cough") (alveolar macrophages) (saliva) (Saccomanno fluid (50% ethyl alcohol and 2% carbowax)) (blood-flecked or solid particles)

Respiratory Cytology (Sputum)

Specimen Requirements:	At least (_____) consecutive (_____________) specimens
Validation:	Presence of (___________) confirms the sample is true sputum, not just (_______)
Fixative:	(___________________________) is used for collection.

Technique:	Select (______/_______) for smearing; process as fresh as possible

(Impression (Imprint) Smears:) (Bronchoscopy:) (Gastric Secretions:) (Nipple Discharge:)

Specialized Smear Techniques

	: Used for ulcerated lesions or lymph nodes; touched directly to the slide.
	Includes washings, brushings (pull technique), and aspirates (ciliated cells).
	High difficulty; must be examined within 30 minutes before gastric juices digest the cells.

	Any non-lactation discharge is abnormal; smear quickly to avoid drying of scanty samples.

(Gastric) (Lymph Node) (Nipple)

Specialized Smear Techniques

Specimen	Key Requiremen
	Fast for 8 hours; process < 30 mins.
	Touch cut surface to slide (Imprint).

	Strip subareolar area; fix immediately.

(The Sputum "Particle" Hack) (blood-flecked or solid particles) (The Macrophage Standard) (alveolar macrophagesare) ( "Pull Technique") (two-slide pull method) (Gastric Speed) (30 minutes) () () ()

Clinical Pearls: Smear & Collection Mastery

◎ (______________): Always prioritize (________/________)

from the Petri dish; these are the most likely to contain diagnostic malignant

cells.

◎ (_____________): If (____________) absent, the specimen

is saliva, not sputum—mark it as "unsatisfactory" to prevent false negatives.

◎ The (__________): For bronchial brushings, use the (___________)

to create a uniform monolayer; avoid circular scrubbing which crushes delicate

cells.

◎ (_________): Process gastric and esophageal washings within (_________);

beyond this, hydrochloric acid digests the cellular morphology.

(Swab Warning) (cotton swabs) (Material Choice) (Cytobrush) (Fixation Timing) (seconds) (Nipple Discharge) (Left (L) or Right (R)) ()

Clinical Pearls: Site-Specific Tips

◎ (________): Avoid using (_________) for cervical smears; the fibers

trap the most diagnostic cells and lead to rapid drying artifacts.

◎ (__________): (______) is superior because they grab more

epithelial layers for a richer sample.

◎ (____________): For bronchial and nipple discharges, fixation must

occur within (________); air-drying happens almost instantly with thin,

liquid-based samples.

◎ (_____________): Always identify secretions as (_______/______) ;

any discharge in a non-lactating patient is clinically significant.

(non-shedding organs) (thyroid, breast, liver, and bone) ( 25-gauge needle) (10-ml syringe) (Superficial vs. Deep) (Preparation) (needle tip)

Fine Needle Aspiration (FNA)

◎ Purpose:Obtains cellular samples from (__________)

(e.g., (____, ____, _____, ___).

◎ Technique: A (_________) and (_________) are used to

"sample" lesions via suction and redirection.

◎ (__________): Palpable masses are aspirated directly;

deep lesions (lung, kidney) require CT or ultrasound guidance.

◎ (__________): Best diagnostic material is usually in the needle

tip; prepare a maximum of 4 slides using the pull-technique.

(Concentration) (centrifugation or cytospin) (Clot Prevention) (Preservation) (4°C for 24–48 hours) (50% ethanol) (CytospinMethod)

Processing Body Fluids & Effusions

• (_________): Fluids like urine and CSF require (______/______) to concentrate low cell numbers.

• (___________): Add 300 units of Heparin per 100 ml of

aspirate to prevent jelly-like clots from trapping cells.

• (_____________): Fresh specimens are preferred; if delayed,

refrigerate at (___________) or use (__________).

• (___________: The "Gold Standard" for concentrated cell

recovery; uses albumin-coated slides to prevent cell loss.

(Nuclear Stain) (:Hematoxylin) (Cytoplasmic Stain 1 (OG-6)) (keratin) (Cytoplasmic Stain 2 (EA-36) (Eosin Y, Light

Green SF, Bismarck Brown) (cytoplasmic transparency)

The Papanicolaou (Pap) Stain

◎ (_________) (________) provides crisp, blue-to-black detail

of the chromatin.

◎ (______________): Specifically stains (_______) bright

orange (critical for detecting squamous cell carcinoma).

◎ (____________): A polychrome stain (______, ______, _____) that differentiates cell types.

◎ Key Advantage: Provides (___________), allowing

us to see through overlapping layers of cells.

(Hematoxylin) (Nucleus) (Blue / Black) (OG-6) (Keratin) (Orange) (EA-36) (Cytoplasm) (Green / Pink / Blue)

The Papanicolaou (Pap) Stain

Stain Component	Target Structure	Resulting Color
(_________)	(_________)	(_______)
(___________)	(_______)	(______)

(_______)	(_______)	(________)

(Wet Fixation) (95% Ethanol) (Air Drying) (Romanowsky/Giemsastains) (Carnoy’sFixative) (hemorrhagic (bloody) samples) (The Paper Clip Trick)

Fixation Mastery & Precautions

◎ (__________):Ideal for Pap/H&E; use (_________) to ensure nuclear detail and prevent "fuzzy" chromatin.

◎ (_________): Used for (_______________); best for colloid, mucin, and hematological assessments.

◎ (__________): A specialized fluid used for (_______________) to lyse red blood cells.

◎ (___________): Attach a paper clip to the end of each slide to prevent them from sticking together in the fixative jar.

(The "Creamy" Standard) (Mesenchymal Challenges) (larger bore needle) (Urgent CSF Handling) (50% ethanol) (The Second-Void Rule:) (second urine specimen) () ()

Clinical Pearls: FNA & Fluid Processing

◎ (_____________): Ideal aspirates should be creamy; if the sample is

purely bloody, the diagnostic cells are likely too diluted for an accurate read.

◎ (___________): Connective tissue cells (mesenchymal) are "sticky."

These require a (_________) and increased suction compared to epithelial

lesions.

◎ (__________): Cells in Cerebrospinal Fluid (CSF) degenerate faster than

any other body fluid; process immediately or add (________) as a preservative.

◎ (__________) Always use the (___________) of the day; the

first contains degenerated cells that have sat in the bladder overnight.

(12-Inch Rule) (12 inches (30 cm) (Hemorrhagic Samples) (Carnoy’sFixative) (Stain Exhaustion) (weekly ) (Paper Clip Technique)

Clinical Pearls: Fixation & Staining

◎ The (________): Hold spray fixatives (__________) away; spraying

too close can physically blast the cells off the slide surface.

◎ (___________): Use (__________) to "clean up" bloody

smears; it lyses red blood cells while providing excellent nuclear

preservation.

◎ (___________): OG-6 and EA-36 lose their potency faster than

Hematoxylin; replace them (________) or when the green/orange hues look

"muddy."

◎ The (__________): Always use paper clips as spacers in your

alcohol jars to prevent slides from sticking together and ruining the cell

layers.

(95% Ethanol) (SaccomannoFluid) (Carnoy’sFluid) (hemorrhagic (bloody) specimens) (Glacial Acetic Acid) ()

Summary of Fixatives for the Lab

◎ (_________): The universal "Gold Standard" for wet fixation and

optimal chromatin detail.

◎ (_________): 50% alcohol + carbowax; used for collecting

sputum and keeping cells "plump" during transport.

◎ (___________): Best for (____________); acts

as a rapid nuclear fixative and RBC lysing agent.

◎ (___________): A component of Carnoy’s that specifically

helps in the hemolysis of red blood cells.

(95% Ethanol) (Routine Smears) (Best Nuclear Detail) (Carnoy's) (Bloody Aspirates) (Lysing of RBCs) (Saccomanno) (Sputum/Washings) (Preserves morphology)

Summary of Fixatives for the Lab

Fixative Type	Primary Use	Key Benefit
(_________)	(________)	(________)
(_______)	(______)	(________)

(_______)	(________)	(_________)

(Mature Superficial Cells) (45–50 μm) (Intermediate Cells) (Parabasal Cells) () (birth to puberty, after childbirth, and after menopause.)

Squamous Epithelial Cells

◎ (___________): Large (_______), polygonal cells with

pink (acidophilic) cytoplasm and dark, pyknotic nuclei (< 6 μm).

◎ (__________): Medium-sized, polyhedral cells with

basophilic, often vacuolated cytoplasm and vesicular nuclei.

◎ (_________): Small (15–30 μm), round-to-oval cells with

dense basophilic cytoplasm and a larger central nucleus.

◎ Clinical Timing: Parabasal cells are normally seen from (_______, ________, _________)

(Navicular Cells) (Endometrial Cells) (Endocervical Cells)

Specialized Vaginal Cells

◎ (__________): Boat-shaped intermediate cells with folded

edges; indicate a combined estrogen-progesterone effect.

◎ (_________): Small, cylindrical cells found in tight clusters;

normally seen during and up to 10 days after menstruation.

◎ (________): Glandular cells occurring in sheets; often

present a "honeycomb" appearance when viewed from the end.

Vaginal Hormonal Cytology

◎ Specimen Site:Best collected from the upper lateral third of

the vaginal wall for the most accurate hormonal profile.

◎ Initial Assessment: Use low magnification to check smear

quality, staining, and the presence of "background" debris

(RBCs/WBCs).

◎ Quantitative Evaluation: Conducted under 40x objective to

determine the proportion of mature superficial cells.

◎ Maturation Index (MI): A numerical representation of the ratio

of parabasal to intermediate to superficial cells.

Clinical Pearls: Squamous Cell Morphology

◎ The Pseudo-AcidophiliaTrap:Pink cytoplasm (acidophilia) is not a 100% reliable

index of estrogen; drying of smears before fixation or infection can cause "false"

pink staining.

◎ The "Honeycomb" Clue:Endocervical glandular cells are easily identified by

their distinct honeycomb (top-down) or picket-fence (side-view) arrangements.

◎ Menstrual Interference:Smears taken during the first 1-10 days of the cycle

contain endometrial cells, RBCs, and debris that frequently obscure malignant

cells.

◎ Navicular vs. Pregnancy:While both are boat-shaped, pregnancy cells show a

much deeper blue stain at the periphery due to heavy glycogen displacement.

(Optimal Sampling Site) ( Assessment Protocol) (Specimen Labeling) (Last Menstrual Period) (Stain Standards) (Harris’ Hematoxylin, OG-6, and EA-50)

Clinical Pearls: Hormonal Assessment

◎ (__________): For accurate hormonal (MI) evaluation, the

sample mustbe taken from the upper lateral third of the vaginal wall.

◎ (_________): Always start with low power (10x) to check for

inflammatory cells and overall smear quality before moving to high

power (40x) for cell counting.

◎ (____________): Always include the patient's LMP (___________) and clinical history (e.g., pregnancy, menopause) on the

requisition form to correlate with cellular findings.

◎(__________): For non-gynecologic specimens, use the standardized

combination of (________, ______, _______) for the best color range.

(Site Selection) (Lateral Vaginal Wall) (Most hormone-sensitive

area.) (Initial Scan) (10x Objective) (Rule out obscuring inflammation.) (MI Calculation) (40x Objective) (Accurate identification of pyknotic nuclei.)

Clinical Pearls: Hormonal Assessment

Procedure Step	Requirement	Reason
(_________)	(________)	(______)
(_________)	(_______)	(_______)

(_______)	(________)	(_______)

(Superficial Cells) (Intermediate Cells) (Parabasal Cells) (Key Identification Marker) (nucleus-to-cytoplasm (N:C)

ratio)

Summary of Cell Identification

◎ (____________): Large, pink, tiny "ink-dot" (pyknotic) nucleus;

indicates high estrogen.

◎ (__________): Medium, blue, larger vesicular nucleus;

indicates progesterone influence.

◎ (________): Small, thick, round/oval; indicates low

hormonal stimulation (menopause/pre-puberty).

◎ (_____________): The (_________________) is your primary tool for distinguishing between these three

layers.

(Optimum Detail) (Contamination Control) (Solvent Maintenance) (Wet Rule)

(__________): Provides the most reliable information for evaluating

nuclear chromatin in Pap smears, FNA, and non-GYN specimens.

◎ (_____________): FNA and non-gynecologic specimens must be

stained separately from routine Pap smears to prevent cross

contamination.

◎ (___________): Discard the first rinsing alcohol and xylene daily;

advance subsequent rinses and add fresh solvent at the end.

◎ The (______): Smears must never be allowed to dry at any point during

the staining process to preserve cellular integrity.

(Air-Dried Utility) (pH Sensitivity) (alkaline pH) (acidic pH) (Precipitate Prevention) (Water-Free Finishing) ()

Romanowsky Stains (May-Grünwald Giemsa)

◎ (_________): Ideal for studying cell morphology in air-dried smears,

specifically for cytoplasm, granules, and vacuoles.

◎ (________): Staining results are highly dependent on pH; (______)

pH shifts colors toward blue, while (_____) shifts them toward red.

◎ (_________): Solutions must be filtered daily to remove

loose cells and dye precipitates that could mimic pathology.

◎ (__________): The final alcohol and xylene baths must be 100%

water-free; any remaining water causes decoloring due to oxidation.

(antibodies) (antigens) ("lock-and-key") (primary site) (metastatic tumors) (Cytology Constraint) (intact cell membranes)

Immunohistochemistry (IHC) in Cytology

◎ Definition:A laboratory method that uses (_______) to detect specific

(_____) (proteins) within a cell sample.

◎ The Mechanism:Selective (_________) binding between a labeled

antibody and a target cellular protein, visualized via a color change.

◎ Diagnostic Role: Essential for differentiating between benign and

malignant cells and identifying the (_______) of (__________).

◎ (___________): Often more challenging in smears due to (_______________); Cell Blocks are preferred for better reagent

penetration

(Mounting Media) (~1.5) (Clearing Agent Compatibility) (IHC Sensitivity) (intracellular antigens) (Cell Blocks)

Mounting and Immunohistochemistry (IHC)

◎ (_________): Use media with a refractive index of (_____) (close to

glass) to ensure optical brilliance and transparency.

◎ (______________): Ensure the mounting medium contains

the same solvent used for clearing (usually Xylene or Toluene) to avoid

air bubbles.

◎ (_______): Excellent for cell surface antigens; however,

(_____________) are harder to detect in intact cytology cells

compared to tissue sections.

◎ (________): For routine IHC, cell blocks are preferred over smears or

filters as they behave more like traditional histologic samples.

(DNA/Protein Analysis) (PCR & Sequencing) (p53) (Fluorescence in Situ Hybridization (FISH)) (Her2/neu) (Future Focus)

Molecular Cytopathology

◎ (_________): Samples stored at room temperature,

4°C, or -20°C for months remain viable for molecular testing.

◎ (___________): Can detect mutations (like (___) from a very

small number of suspicious or malignant cells.

◎ (__________________________): The most objective

technique for assessing (_____) status in breast cancer FNA

samples. (Her2 + patients eligible for targeted treatment using

Trastuzumab)

◎ (_________): Cytology is no longer just "looking at cells"—it is

the starting point for personalized genetic medicine.

(Contamination Sentinel) (Replace all reagents) (Rehydration Hack) (normal saline) (Oxidation Warning) (oxidation) (4/65 Speed Fix) (4% formaldehyde and 65%

ethanol)

Clinical Pearls: Laboratory Quality Control

◎ (___________): Regularly seeing bacteria or fungi across

different patient cases suggests contaminated staining solutions.

(___________) immediately.

◎ The (________): If an air-dried smear appears opaque or

"cloudy," treat it with (___________) to restore cellular transparency and

hemolyze RBCs.

◎ (_________): Water in the final xylene or alcohol baths causes

(_______), leading to the slow fading or decoloring of slides over time.

◎ The (________): Use a mixture of (_______&_______) to reduce the time required for both fixation and staining of smears.

(pH Management) (alkaline pH) (acidic pH) (The Filtration Rule) (filtered daily) (Mounting Brilliance) (air bubbles) (1.5.) (Molecular Integrity) (4°C or -20°C)

Clinical Pearls: Advanced Staining & Mounting

◎ (_________):In Romanowsky (MGG) staining, an (___________)

increases blue tones, while an (_______) increases pink/reddish tinges.

◎ (________): Staining solutions must be (________); this

removes loose cells that can cause "floaters" and false-positive cross

contamination.

◎ (________): Ensure your mounting medium solvent matches

your clearing agent (Xylene/Toluene) to prevent (______) and

maintain a refractive index of (____)

◎ (________): For DNA/Protein analysis, samples can be stored at

(___________) for months without losing the ability to perform PCR or

sequencing.

(Intact Cell Barrier) (intact cell membranes) (Cell Block Advantage) (cell blocks) (mimics) (Background Interference) (FISH Accuracy) (Her2/neu) () ()

Clinical Pearls: Immunohistochemistry (IHC)

◎ (_________): False negatives are more common in cytology IHC because

(_____________) prevent immunologic reagents from penetrating the

nucleus.

◎ (___________): Processing samples as (________) (fixed in wax) is

superior to smears for IHC as it (______) the structure of histologic tissue.

◎ (______________): Avoid conventional filter preparations for IHC; filters

tend to absorb reagents non-specifically, creating a "messy" background.

◎ (__________): Fluorescence In Situ Hybridization (FISH) is the gold standard for (__________) assessment, providing an objective count of gene copies.