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Institutional Study on Unsatisfactory Pap Smears: Causes and Clinical Impact.
Santosh Tummidi1, Varsha Kalambul Vijayalal1, Souvik Bhattacharya1
1Department of Pathology and Lab Medicine, AIIMS, Kalyani, West Bengal, India.
Journal of Cytology
|June 29, 2026
Summary
Unsatisfactory cervical cancer screening results (US) affect 5.8% of Pap tests, primarily due to low cellularity. Improving sample collection and quality control is crucial for accurate diagnosis and patient care.
Area of Science:
- Cytopathology
- Gynecologic Oncology
- Quality Assurance in Diagnostics
Background:
- Cervical Papanicolaou (Pap) smear screening is a cornerstone of cervical cancer detection.
- Specimen adequacy is critical for accurate cytologic interpretation, with unsatisfactory (US) results delaying diagnosis and increasing healthcare costs.
- The Bethesda System standardizes reporting, emphasizing specimen adequacy as a key quality metric.
Purpose of the Study:
- To analyze the incidence and causes of unsatisfactory cervical cytology specimens.
- To identify demographic factors associated with US Pap smears.
- To provide recommendations for improving specimen quality and patient management.
Main Methods:
- Retrospective retrieval of cervical cytology cases reported as US over an 18-month period.
- Collection of demographic data for patients with US smears.
- Analysis of the primary reasons for specimen inadequacy.
Main Results:
- Out of 4,139 Pap tests, 240 (5.8%) were unsatisfactory.
- Low squamous cellularity was the predominant cause (80%) of US smears.
- Patients in their fourth and fifth decades represented 66% of US cases; conventional Pap smears constituted 70% of unsatisfactory samples.
Conclusions:
- Specimen adequacy is significantly influenced by sample collection techniques and personnel expertise.
- Implementing robust quality control measures and targeted training can reduce the rate of US Pap smears.
- Follow-up strategies, including HPV co-testing, are vital for patients with unsatisfactory screening results to ensure timely diagnosis and management.
