Popliteal fossa metastasis from rectal carcinoma in a young adult: A rare case report.
OpenAlex 토픽 ·
Colorectal and Anal Carcinomas
Colorectal Cancer Surgical Treatments
Cancer Diagnosis and Treatment
Signet-ring cell carcinoma (SRCC) of the rectum is a rare and aggressive subtype of colorectal cancer, typically metastasizing to regional lymph nodes, peritoneum, and liver.
APA
Aniqa Sahi, Aruba Nawaz Khattak, et al. (2026). Popliteal fossa metastasis from rectal carcinoma in a young adult: A rare case report.. Radiology case reports, 21(6), 2444-2448. https://doi.org/10.1016/j.radcr.2026.02.012
MLA
Aniqa Sahi, et al.. "Popliteal fossa metastasis from rectal carcinoma in a young adult: A rare case report.." Radiology case reports, vol. 21, no. 6, 2026, pp. 2444-2448.
PMID
41889474
Abstract
Signet-ring cell carcinoma (SRCC) of the rectum is a rare and aggressive subtype of colorectal cancer, typically metastasizing to regional lymph nodes, peritoneum, and liver. Metastasis to the popliteal fossa is exceedingly rare. We report a 27-year-old male with biopsy-proven rectal SRCC who developed a painful soft tissue mass in the left popliteal fossa within 1 year despite ongoing chemoradiotherapy. MRI demonstrated a heterogeneous mass with central necrosis, peripheral enhancement, and diffusion restriction. ¹⁸F-FDG PET/CT revealed peripheral FDG avidity (SUVmax 2.8). Ultrasound-guided core biopsy confirmed metastatic adenocarcinoma of colorectal origin. This case highlights an extremely rare metastatic pattern of rectal SRCC and emphasizes the importance of a multimodality imaging approach, including ultrasound, MRI, and PET/CT, in evaluating atypical soft tissue lesions in oncology patients.