CYTOTECHNOLOGIST CERTIFICATION
EXAMINATION
100 PRACTICE QUESTIONS WITH ANSWERS AND
RATIONALES
2026–2027 TESTING CYCLE
SECTION 1: GYNECOLOGICAL CYTOLOGY (Questions 1–30)
Question 1: Which fixative is most appropriate for preserving nuclear detail in a liquid-based
cervical cytology specimen?
Answer: 95% ethanol spray fixative
Rationale: A 95% ethanol spray fixative rapidly penetrates cells and preserves nuclear
chromatin and cytoplasmic detail, making it ideal for liquid-based cervical specimens. 10%
neutral buffered formalin is used for histology, not cytology. 70% ethanol is less effective for
nuclear preservation. Acetone is not a primary fixative for cytology specimens.
Question 2: In a Pap test, the presence of koilocytic cells is most indicative of which infection?
Answer: Human papillomavirus (HPV)
Rationale: Koilocytosis, characterized by perinuclear halos and nuclear irregularities, is a
hallmark of HPV infection. Candida albicans shows pseudohyphae and spores. Trichomonas
,vaginalis shows pear-shaped organisms with flagella. Gardnerella vaginalis shows clue cells
(bacteria-coated epithelial cells).
Question 3: A cervical cytology slide shows numerous neutrophils, squamous cells with
cytoplasmic vacuolization, and "clue cells." The most likely diagnosis is:
Answer: Bacterial vaginosis
Rationale: Clue cells (epithelial cells coated with bacteria) are characteristic of bacterial
vaginosis. Trichomoniasis shows pear-shaped organisms with flagella. Candida infection shows
pseudohyphae and spores. Herpes simplex virus infection shows multinucleated giant cells with
nuclear molding.
Question 4: A 35-year-old woman has a ThinPrep Pap test showing clusters of small,
hyperchromatic cells with nuclear molding and scant cytoplasm. What is the most likely
interpretation?
Answer: High-grade squamous intraepithelial lesion (HSIL)
Rationale: Nuclear molding + hyperchromasia + scant cytoplasm + high N/C ratio indicates
HSIL (CIN 2/3). LSIL has ample cytoplasm with koilocytes. AGC shows feathering or rosettes.
Atrophic vaginitis shows uniform small nuclei without molding.
,Question 5: A 28-year-old patient has a Pap test showing superficial and intermediate squamous
cells with enlarged nuclei (3x normal), perinuclear halos, and binucleation. What is the Bethesda
diagnosis?
Answer: LSIL (Low-grade squamous intraepithelial lesion)
Rationale: The presence of koilocytes (perinuclear halos, binucleation, nuclear enlargement)
with superficial and intermediate cells is diagnostic of LSIL. HSIL shows high N/C ratio with
hyperchromasia. NILM shows normal maturation. ASC-US shows atypical cells that do not meet
criteria for LSIL or HSIL.
Question 6: A Pap test shows cells arranged in feathering patterns with nuclear crowding and
hyperchromasia. What is the most likely diagnosis?
Answer: Atypical glandular cells (AGC)
Rationale: Feathering patterns, nuclear crowding, and hyperchromasia are characteristic of
glandular lesions, including AGC and adenocarcinoma in situ. Squamous lesions typically show
sheet-like or single-cell patterns, not feathering. Endocervical cells in transformation zone are
normal findings.
Question 7: In the Bethesda System, which category requires immediate colposcopic
evaluation?
, Answer: HSIL (High-grade squamous intraepithelial lesion)
Rationale: HSIL requires immediate colposcopic evaluation due to the high risk of progression
to invasive carcinoma. ASC-US may be managed with HPV triage or repeat Pap. LSIL may be
managed with colposcopy or repeat Pap depending on patient age. NILM requires routine
screening.
Question 8: A Pap test shows numerous small, uniform cells with a high nuclear-to-cytoplasmic
ratio, nuclear hyperchromasia, and "cracking" artifact. These findings are most consistent with
which condition?
Answer: Atrophic vaginitis
Rationale: Atrophic vaginitis shows numerous small, uniform parabasal cells with high N/C
ratio and nuclear hyperchromasia. The cells are uniform and lack the pleomorphism seen in
HSIL. HSIL shows nuclear pleomorphism, irregular chromatin distribution, and nuclear
molding.
Question 9: Which organism is characterized by the presence of "spaghetti and meatballs" on a
Pap test?
Answer: Candida albicans
EXAMINATION
100 PRACTICE QUESTIONS WITH ANSWERS AND
RATIONALES
2026–2027 TESTING CYCLE
SECTION 1: GYNECOLOGICAL CYTOLOGY (Questions 1–30)
Question 1: Which fixative is most appropriate for preserving nuclear detail in a liquid-based
cervical cytology specimen?
Answer: 95% ethanol spray fixative
Rationale: A 95% ethanol spray fixative rapidly penetrates cells and preserves nuclear
chromatin and cytoplasmic detail, making it ideal for liquid-based cervical specimens. 10%
neutral buffered formalin is used for histology, not cytology. 70% ethanol is less effective for
nuclear preservation. Acetone is not a primary fixative for cytology specimens.
Question 2: In a Pap test, the presence of koilocytic cells is most indicative of which infection?
Answer: Human papillomavirus (HPV)
Rationale: Koilocytosis, characterized by perinuclear halos and nuclear irregularities, is a
hallmark of HPV infection. Candida albicans shows pseudohyphae and spores. Trichomonas
,vaginalis shows pear-shaped organisms with flagella. Gardnerella vaginalis shows clue cells
(bacteria-coated epithelial cells).
Question 3: A cervical cytology slide shows numerous neutrophils, squamous cells with
cytoplasmic vacuolization, and "clue cells." The most likely diagnosis is:
Answer: Bacterial vaginosis
Rationale: Clue cells (epithelial cells coated with bacteria) are characteristic of bacterial
vaginosis. Trichomoniasis shows pear-shaped organisms with flagella. Candida infection shows
pseudohyphae and spores. Herpes simplex virus infection shows multinucleated giant cells with
nuclear molding.
Question 4: A 35-year-old woman has a ThinPrep Pap test showing clusters of small,
hyperchromatic cells with nuclear molding and scant cytoplasm. What is the most likely
interpretation?
Answer: High-grade squamous intraepithelial lesion (HSIL)
Rationale: Nuclear molding + hyperchromasia + scant cytoplasm + high N/C ratio indicates
HSIL (CIN 2/3). LSIL has ample cytoplasm with koilocytes. AGC shows feathering or rosettes.
Atrophic vaginitis shows uniform small nuclei without molding.
,Question 5: A 28-year-old patient has a Pap test showing superficial and intermediate squamous
cells with enlarged nuclei (3x normal), perinuclear halos, and binucleation. What is the Bethesda
diagnosis?
Answer: LSIL (Low-grade squamous intraepithelial lesion)
Rationale: The presence of koilocytes (perinuclear halos, binucleation, nuclear enlargement)
with superficial and intermediate cells is diagnostic of LSIL. HSIL shows high N/C ratio with
hyperchromasia. NILM shows normal maturation. ASC-US shows atypical cells that do not meet
criteria for LSIL or HSIL.
Question 6: A Pap test shows cells arranged in feathering patterns with nuclear crowding and
hyperchromasia. What is the most likely diagnosis?
Answer: Atypical glandular cells (AGC)
Rationale: Feathering patterns, nuclear crowding, and hyperchromasia are characteristic of
glandular lesions, including AGC and adenocarcinoma in situ. Squamous lesions typically show
sheet-like or single-cell patterns, not feathering. Endocervical cells in transformation zone are
normal findings.
Question 7: In the Bethesda System, which category requires immediate colposcopic
evaluation?
, Answer: HSIL (High-grade squamous intraepithelial lesion)
Rationale: HSIL requires immediate colposcopic evaluation due to the high risk of progression
to invasive carcinoma. ASC-US may be managed with HPV triage or repeat Pap. LSIL may be
managed with colposcopy or repeat Pap depending on patient age. NILM requires routine
screening.
Question 8: A Pap test shows numerous small, uniform cells with a high nuclear-to-cytoplasmic
ratio, nuclear hyperchromasia, and "cracking" artifact. These findings are most consistent with
which condition?
Answer: Atrophic vaginitis
Rationale: Atrophic vaginitis shows numerous small, uniform parabasal cells with high N/C
ratio and nuclear hyperchromasia. The cells are uniform and lack the pleomorphism seen in
HSIL. HSIL shows nuclear pleomorphism, irregular chromatin distribution, and nuclear
molding.
Question 9: Which organism is characterized by the presence of "spaghetti and meatballs" on a
Pap test?
Answer: Candida albicans
