Abstract
Fewer than 50 cases of carcinoma arising in a pilonidal sinus have been reported, with only 5 patients having documented inguinal lymph node metastases. This is the first report of the fine-needle aspiration (FNA) diagnosis of this uncommon clinical situation of squamous-cell carcinoma arising in a pilonidal sinus, metastatic to an inguinal, lymph node. We report on a 59-yr-old male with squamous-cell carcinoma arising in a pilonidal sinus who presented with inguinal adenopathy. FNA biopsy of a lymph node was performed, resulting in a diagnosis of metastatic squamous-cell carcinoma. FNA biopsy is useful in the evaluation of patients with inguinal adenopathy and a history of malignancy arising in a pilonidal sinus. The possibility of this rare complication should also be considered when metastatic squamous-cell carcinoma to an inguinal lymph node is diagnosed by FNA cytology in patients having an unknown primary except for a change in a long-standing pilonidal cyst.
Original language | English (US) |
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Pages (from-to) | 367-370 |
Number of pages | 4 |
Journal | Diagnostic cytopathology |
Volume | 20 |
Issue number | 6 |
DOIs | |
State | Published - Jun 1999 |
Keywords
- Cytology
- Fine-needle aspiration biopsy
- Inguinal lymph node
- Metastasis
- Pilonidal sinus
- Squamous-cell carcinoma
ASJC Scopus subject areas
- Pathology and Forensic Medicine
- Histology