High‑yield cytology cases and FNA review shared
Several professional posts this week shared diagnostic teaching material: @duckhuca posted cytology images of metastatic breast carcinoma in CSF and a supraclavicular FNA showing TTF‑1+ lung adenocarcinoma, Cancer Cytopathology highlighted a free systematic review on FNA for renal lesions, and IAC launched a five‑case #IACcytoQuiz for team skill building. These items combine visual cases and evidence summaries useful for cytology training. (x.com) (x.com) (x.com) (x.com)
@duckhuca’s account is registered to Héctor‑Enrique Torres‑Rivas, MD, MIAC and has a documented history of sharing diagnostic cytology images including leptomeningeal/CSF and supraclavicular FNA cases; the two X posts referenced were published at and (piclur.com) The supraclavicular FNA image in the thread was described as TTF‑1 positive, a marker whose recent immunocytochemistry validation showed a sensitivity of ~97% for lung adenocarcinoma and a positive predictive value near 100% when paired with squamous markers such as p40 in small‑specimen workups. (sciencedirect.com) (sciencedirect.com) Cancer Cytopathology’s highlighted systematic review pooled the renal FNA literature to assess diagnostic performance and explicitly recommended development of a standardized renal‑cytology classification system to reduce variability across studies. (acsjournals.onlinelibrary.wiley.com) The IAC release linked as a five‑case #IACcytoQuiz provides image‑based cases with submission and image‑upload guidance on the IAC site and is structured for group review and teaching sessions; the IAC quiz‑submission page includes step‑by‑step case writeup and ImageShare instructions. (x.com) Contemporary reviews and case archives emphasize that CSF metastatic breast carcinoma and renal FNA both benefit from cell‑block/ICC and targeted panels—breast markers and TTF‑1/Napsin A panels for lung primaries, and caution that renal FNAs are vulnerable to cystic sampling error and difficult oncocytic neoplasm interpretation. (mdpi.com) (imagebank.hematology.org)
