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18F-FDG PET/CT of Sacrococcygeal Pilonidal Sinus Carcinoma

  • 0Department of Nuclear Medicine, The First People's Hospital of Kunshan, Jiangsu University, Kunshan, China.
Clinical Nuclear Medicine +

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June 24, 2025

|

June 24, 2025

View abstract on PubMed

Summary

This summary is machine-generated.

Pilonidal sinus carcinoma, a rare cancer, is often misdiagnosed. This case highlights the utility of 18F-FDG PET/CT imaging in diagnosing this aggressive malignancy.

Area Of Science

  • Oncology
  • Radiology
  • Surgical Pathology

Background

  • Pilonidal sinus carcinoma is an uncommon malignancy with a typically poor prognosis.
  • It is frequently misdiagnosed as a benign infection or fistula due to its location and presentation.
  • Early and accurate diagnosis is crucial for improving patient outcomes.

Purpose Of The Study

  • To present a case of pilonidal sinus carcinoma diagnosed using 18F-FDG PET/CT imaging.
  • To illustrate the imaging characteristics of this rare cancer.
  • To emphasize the importance of considering malignancy in chronic pilonidal sinus disease.

Main Methods

  • A 69-year-old woman with a chronic pilonidal sinus was evaluated.
  • 18F-FDG PET/CT imaging was performed to assess the extent and metabolic activity of the lesion.
  • Pathological confirmation of the diagnosis was obtained.

Main Results

  • 18F-FDG PET/CT revealed an irregular retrorectal-precoccyx mass with sinus tract formation and increased glucose metabolism.
  • The mass was connected to an intergluteal cyst.
  • Histopathological examination confirmed the diagnosis of pilonidal sinus carcinoma.

Conclusions

  • 18F-FDG PET/CT can be a valuable tool in the diagnosis of pilonidal sinus carcinoma.
  • This case underscores the need for vigilance in diagnosing chronic pilonidal sinus disease.
  • Prompt diagnosis and treatment are essential for managing this rare and aggressive cancer.

Keywords:

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