Cervical cytology

Visual assessment and types of epithelium

During a standard speculum examination, the physician primarily pays attention to the color and surface structure of the cervix. These visual characteristics directly depend on the type of epithelial lining and allow for a clinical assessment of the degree and completeness of endocervicosis healing.

Areas covered by simple columnar epithelium (ectopic patches) always stand out with their bright red color. This hue occurs because the subepithelial vascular layer shines clearly through this layer. In contrast, areas of completed epidermization are covered by stratified squamous non-keratinizing epithelium. This mature epithelium has a completely different, normal gray color. It is precisely this sharp color contrast that allows the clinician to visually assess how successfully the healing process is progressing right during the examination.

Role of cytological examination

Although the topic is often referred to as "cervical cytology," it is important to clearly understand the limitations of this method. Cytological examination (traditional smear or scrape) is considered a low-informativeness tool if the clinical goal is to diagnose the epidermization process itself or to detect endometriosis.

However, this method is absolutely mandatory in gynecological practice. Its main task in the context of healing endocervicosis is the strict exclusion of any cellular atypia. The physician must be sure that there are no atypical changes in the stratified squamous epithelium. Thus, cytology performs a vital screening function, even if it does not provide a complete picture of the healing process itself.

Colposcopy as the basis for differential diagnosis

When visual inspection with speculums is not enough to make an accurate diagnosis, colposcopy comes to the forefront. This method is recognized as the primary tool for differential diagnosis when identifying Nabothian cysts, which frequently accompany the healing process of endocervicosis.

The colposcopic picture allows the physician to reliably distinguish Nabothian cysts from a number of other cervical pathologies. Specifically, a thorough differential diagnosis is performed for the following conditions:

• true ectopy;
• erythroplakia;
• cervical polyps;
• ectropion;
• cervical endometriosis.

Histological verification

If the cytological smear or colposcopic picture raises doubts for the specialist, the next and final stage of diagnosis becomes histological verification. For this purpose, a targeted biopsy of the suspicious area is performed.

Histological examination of tissue is strictly indicated. First, it is absolutely essential at the slightest suspicion of concomitant dysplasia or when signs of cellular atypia are detected. Second, a biopsy is justified in clinical situations where the colposcopic picture remains unclear. Only histology provides a definitive answer regarding the tissue structure of the affected area and allows for an accurate diagnosis.

Class and exam questions

What else to study on this topic

• Mechanisms of Nabothian cyst formation during the healing of endocervicosis
• Differential diagnosis of erythroplakia and ectopy during colposcopy
• Colposcopic signs of cervical polyps and ectropion
• Signs of cellular atypia in stratified squamous non-keratinizing epithelium
• Visual features of cervical endometriosis

Other topics in the "Additional Topics" section

Prepared by WhiteCoat Pro faculty in accordance with the medical school curriculum. For educational purposes only.