Thoracic pathologist, University of Montreal Health Center
Joined October 2019
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Charles Leduc, MD retweeted
The history of Congo red‐stained amyloid is an example of how an erroneous belief can become widely established even when it is contradicted
by simple experience: "Congo red‐stained amyloid just shows “apple‐green birefringence" (PMID: 31515863)
ncbi.nlm.nih.gov/pmc/article…
Hi all! So we all know about constrictive bronchiolitis, but can it happen in large airways? Below is post-SBRT obliterative bronchitis of LLL with secondary necrotizing granulomatous consolidation - awaiting stains but betting on NTM. A sort of (non) middle lobe syndrome!
Charles Leduc, MD retweeted
Do you recognize these seed-derived storage cells (images courtesy of @oreoimc)? See the latest publication on these cells and the lesions they produce co-authored by me, @Histopatolomon. and @navale_pooja at rdcu.be/cz4ZC. A Twitter inspired collaboration.
Bag of worms. Hydrophilic polymer embolisation with secondary thrombosis. This is a thrombectomy specimen from the right femoral artery in a patient undergoing peripheral vascular surgery. The guidewires are coated in this material that can occasionally embolize. Yikes!
Explants from woman in her mid 40s. Clinical history on req: pulmonary hypertension. IHC is CD1a. Unifying diagnosis?
Charles Leduc, MD retweeted
#Pulmpath #Thoracicpath #Pathbugs
Excited to share unusual case ,Male 60s ,3.8 cm lung mass ,Bx sent as suspected malignancy ,look at the first set ,try to make the Dx ,then go to second set
Charles Leduc, MD retweeted
We have lost a giant of #Pathology and #LungPath #PulmonaryPath. Dr. Sam Yousem, an admired colleague and friend died yesterday. He will be missed and remembered.
Charles Leduc, MD retweeted
Barcelona hospital performs first successful transplant on patient with Covid-ravaged lungs in Spain catalannews.com/covid-19/ite… vía @catalannews @vallhebron @ThoracicSurgHVH
Charles Leduc, MD retweeted
- Lung development stage?
Canalicular Lung (16-25 WGA)
- Is it perinatal pneumonia?
Aspirated amniotic exudate
- What are placental findings?
Acute Necrotizing Chorioamnionitis with Funisitis
#placenta #perinatal (😬 I forgot @basophil_brett)
🥇@leon_metlay
🥈@grenierkarlMD
Charles Leduc, MD retweeted
For #PathResident
Lung section 20WGA - premature labor, APGAR 1-1-1, no resuscitation:
- Lung development stage?
- Is it perinatal pneumonia?
- What are placental findings? #PediPath @grenierkarlMD
Charles Leduc, MD retweeted
Usual Interstitial Pneumonia shows peripheral, lower predominant fibrosis in the #grosspath by @_Romo_Navarro Microscopically you can appreciate patchy fibrosis, fibroblastic foci & honeycomb #pulmpath #explantsRawesome #transplantpath #ILD
Charles Leduc, MD retweeted
True Thymic Hyperplasia in a 30 yo. Enlargement of normal thymus. Thymic cortices & medullae are well defined. Interstitial connective tissue is delicate with fat cells #pulmpath
The pictures in the previous tweet are most suggestive of :
6%Carcinoid tumour
8%AVM (arteriovenous malf)
80%Glomus tumour
7%Hemangioma
213 votes • Final resultsA huge thank you to all who engaged! As most of you surmised - this is a glomus tumor. As @RessChimes stated "round round, same same!" Those features + intimate relationship with vessel walls + smooth muscle markers = GT! Unusual in the trachea!
Charles Leduc, MD retweeted
#PediPath #pulmpath 4 YO. Differential diagnosis? IHC you would suggest? #pathboards – at Pittsburgh, PA
Charles Leduc, MD retweeted
This material was removed from a bronchus. Can you answer this in one word? This finding is nearly always seen in patients with ....?
#pathology #pulmpath
