To open 2026, here is one of the rarest findings in a lung biopsy: fruiting body of Rhizopus (confirmed by PCR)
#pathology #pulmpath #pathbugs #pathsky
To read how these fruiting bodies differ from those of Aspergillus, click here:
journals.sagepub.com/doi/10.1177/...
This fungus looked exactly like Aspergillus but turned out to be Pseudallescheria (by microbiologic cultures). How should such cases be worded?
Read more here in Int J Surg Pathol:
journals.sagepub.com/doi/10.1177/...
#pathsky #fungal #idsky #pathology #pulmpath
#pathsky #pathology #pulmpath
3 thoracic pathologists discuss pathology of mesothelioma
youtu.be/LVXlir8s8ik?...
Lymphangioleiomyomatosis:
1. Yet another misnomer in #pulmpath
2. PEComatous proliferations in walls of lung cysts
3. ALWAYS consider in women with bilateral lung cysts, recurrent pneumothoraces, tuberous sclerosis or renal angiomyolipoma
4. VERY IMPORTANT for boards
#pathsky
Learn to differentiate fibroblast foci (this image) from fibroblast plugs (Masson bodies), or you will never learn to diagnose UIP and forever be "correlating" with CT findings. Don't misdiagnose UIP as organizing pneumonia!
#pathology #pulmpath #uip #pathsky
Image of the Week!
Submitted by: Gustavo G. Engelman, M.D.
Directory Profile: buff.ly/g1lc8eY
Subspecialty: Pulmonary / thoracic
Diagnosis: Thymoma type A
#Pathology #PathologyOutlines #PulmPath
Disseminated histoplasmosis, cytology, BAL specimen, pap stain #pathology #pulmpath #pathsky
In lung specimens, this morphology is a surrogate for disseminated disease
pubmed.ncbi.nlm.nih.gov/24054723/
PGY1s: the "cribriform" growth pattern occurs in many cancers including adenoid cystic carcinoma and prostate cancer. It results when many small glands are packed together back to back into a sieve-like collection of lumens. From Latin (cribrum = sieve) #pathology #pulmpath #pathsky
Mesothelial cells in transbronchial biopsy
Difficult question but kudos to @EvidenceOpen for citing Bejarano et al
#pathology #pulmpath #pathsky
✨ Celebrating our Cardiothoracic Fellow & Team at their end-of-year gathering! Thank you for being the "heart" of our Department! #pathology #path2path #PathSky #cardiacpath #pulmpath #lungpath
Granulomas of sarcoidosis vs "granulomas" of hypersensitivity pneumonitis
#pathsky #pathology #pulmpath
Enjoy 6 extra cyto cases I put together for today!
😊😊
www.classmarker.com/online-test/...
#PathSky #PulmPath #Pathology #CytoPath
❌Adenocarcinoma
Cohesive flat sheets or dense, glandular, acinar, or papillary architecture with cells orientated to edges.
Nuclei: central, round/oval, large nucleoli & fine chromatin
Cytoplasm: eccentric, well-defined, and one to multiple vacuoles
TTF1+ p40-
#PathSky #PulmPath #Pathology
Adenocarcinoma or squamous cell carcinoma?🧐
Both or neither? 🧐
#PathTwitter #PathSky #PulmPath #Pathology
Today’s 4 extra cases here!
www.classmarker.com/online-test/...
can you do it??
#PulmPath #PathSky #pathology
✅Schwannoma
slow-growing solitary tumor in posterior mediastinum (paravertebral)
spindle cells with ovoid / buckled nuclei with tapered ends
bizarre shapes, ancient change, and pseudoinclusions may be seen
paranuclear vacuoles not seen, seen in leiomyoma
#PulmPath #PathSky #pathology
Today’s 4 extra cases here!
www.classmarker.com/online-test/...
can you do it??
#PulmPath #PathSky #pathology
❌Meningioma
Most lesions are peripheral and localized to the lung
Well circumscribed, solid proliferation
Bland tumor cells growing in whorls and lobular nests
#PulmPath #PathSky #Pathology
❌Non-Caseating Granuloma
Histiocytes lack the distinct wavy/buckled appearance of Schwann cells.
#PulmPath #PathSky #Pathology
Which of the following features IS NOT seen in schwannoma?
A) Bizarre nuclei
B) Nuclei with pointed tips
C) Intranuclear pseudoinclusions
D) Paranuclear vacuoles
#PulmPath #PathSky #pathology
Solitary paravertebral lesion.
Schwannoma?
Meningioma?
Or just some histiocytes?
#PulmPath #PathSky #Pathology
✅Meningioma
Most lung lesions are peripheral and localized
Well circumscribed, solid proliferation
Bland tumor cells growing in whorls and lobular nests
✅(+) SSTR2A, CD56, S100, PR
(-) PanCK, melanoma & NE markers (e.g., melan-A & synaptophysin), GFAP, OCT4
#PulmPath #PathSky #Pathology
❌Schwannoma
slow-growing solitary tumor in posterior mediastinum (paravertebral)
spindle cells with ovoid / buckled nuclei with tapered ends
bizarre shapes, ancient change, and pseudoinclusions may be seen
#PulmPath #PathSky #Pathology
