Cytological spectrum of suppurative cutaneous and subcutaneous nodules: a one-year retrospective observational study at a tertiary care hospital.
DOI:
https://doi.org/10.51168/sjhrafrica.v6i12.2265Keywords:
Fine Needle Aspiration Cytology (FNAC), suppurative nodules, abscess, keratinous cyst, fungal abscess, cold abscess, cytomorphologyAbstract
Background:
Suppurative cutaneous and subcutaneous nodules frequently resemble a wide range of inflammatory and neoplastic lesions, making early diagnosis essential. Fine needle aspiration cytology (FNAC) provides a rapid, minimally invasive method to identify the underlying pathology and guide timely clinical management.
Objectives:
To describe the cytomorphological spectrum of suppurative nodules and correlate these findings with demographic patterns, lesion size, and anatomical distribution.
Methods:
A retrospective review of 124 FNAC samples obtained from cutaneous and subcutaneous nodules over a one-year period was conducted. Demographic details, clinical features, and cytological characteristics were retrieved from departmental archives. Smears were examined for cellularity, inflammatory profile, necrotic background, keratinous material, fungal elements, and granulomatous reactions. Frequencies and percentages were calculated to summarize diagnostic categories and site distribution.
Results:
Among the 124 patients, males predominated, and most cases occurred between the fourth and seventh decades. Abscesses were the most frequent lesions, followed by infected keratinous cysts, fungal abscesses, and cold abscesses. Truncal lesions were common in abscesses and keratinous cysts, while fungal abscesses occurred primarily in the extremities. All cold abscesses were confined to the head and neck region. Cytological evaluation revealed distinctive patterns for each entity, enabling differentiation between acute suppuration, chronic inflammation, and specific infections such as mycoses or tuberculosis.
Conclusion:
FNAC remains a valuable frontline diagnostic tool for suppurative nodules, offering quick, reliable, and cost-effective insights. Distinct cytomorphological features support accurate classification and help avoid diagnostic confusion with neoplastic lesions, thus promoting early and appropriate treatment.
Recommendations:
Routine FNAC should be encouraged in all unexplained nodular swellings to prevent diagnostic delays. Incorporating microbiological correlation, especially in recurrent or atypical lesions, can strengthen diagnostic precision. Periodic training in recognizing subtle cytological clues will enhance reporting consistency and clinical impact.
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Copyright (c) 2025 Dr. Lakshmi Saraswathi Boni, Dr. Sasikala Salikanti, Dr. Sandhya Pitla, Dr. Satyanarayana Polisetty

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