David Steensma, MD
@davidsteensma.bsky.social
Hematologist-oncologist. Ajax Therapeutics CMO. Former Edward P. Evans Chair in #MDSsm at #DanaFarber; #HarvardMedicalSchool & #MayoClinic faculty, #Novartis global hematology head. @DavidSteensma
It is unusual to see a barred owl on the ground, especially during the day. But this guy was doing some sort of maintenance in the dust alongside a remote hiking trail.
The owl was not injured. It flew away when it saw me, but not before posing for a nice photo.
#UnusualBirdBehavior
The owl was not injured. It flew away when it saw me, but not before posing for a nice photo.
#UnusualBirdBehavior
February 18, 2025 at 6:36 AM
It is unusual to see a barred owl on the ground, especially during the day. But this guy was doing some sort of maintenance in the dust alongside a remote hiking trail.
The owl was not injured. It flew away when it saw me, but not before posing for a nice photo.
#UnusualBirdBehavior
The owl was not injured. It flew away when it saw me, but not before posing for a nice photo.
#UnusualBirdBehavior
Found this advertisement for "Blood Poverty" tonic - "Women naturally suffer more than men" - in a 1925 New Zealand newspaper.
While the first recorded use of 'cytopenia' was a 1906 paper per OED, it means 'cell poverty' - from the Greek πενίᾱ (peníā), poverty or lack.
@shematologist.medsky.social
While the first recorded use of 'cytopenia' was a 1906 paper per OED, it means 'cell poverty' - from the Greek πενίᾱ (peníā), poverty or lack.
@shematologist.medsky.social
February 5, 2025 at 1:49 PM
Found this advertisement for "Blood Poverty" tonic - "Women naturally suffer more than men" - in a 1925 New Zealand newspaper.
While the first recorded use of 'cytopenia' was a 1906 paper per OED, it means 'cell poverty' - from the Greek πενίᾱ (peníā), poverty or lack.
@shematologist.medsky.social
While the first recorded use of 'cytopenia' was a 1906 paper per OED, it means 'cell poverty' - from the Greek πενίᾱ (peníā), poverty or lack.
@shematologist.medsky.social
A small stream runs through the woods behind our house, and this morning “frost flowers” were on the surface.❄️ I’ve never seen them before!
They can form on thin ice on chilly, windless days when the air is much colder than the surface ice. Water vapor rising up from the surface quickly refreezes.
They can form on thin ice on chilly, windless days when the air is much colder than the surface ice. Water vapor rising up from the surface quickly refreezes.
January 26, 2025 at 4:51 PM
A small stream runs through the woods behind our house, and this morning “frost flowers” were on the surface.❄️ I’ve never seen them before!
They can form on thin ice on chilly, windless days when the air is much colder than the surface ice. Water vapor rising up from the surface quickly refreezes.
They can form on thin ice on chilly, windless days when the air is much colder than the surface ice. Water vapor rising up from the surface quickly refreezes.
Blue skies and blue reflections in suburban Boston this morning ❄️
January 20, 2025 at 3:39 PM
Blue skies and blue reflections in suburban Boston this morning ❄️
I was walking along a trail yesterday and noticed this Madagascar periwinkle (Catharanthus roseus) - the plant that “vinca alkaloid” anti-cancer drugs vincristine and vinblastine were isolated from back in 1961. They’re still used today, especially vincristine for acute lymphoid leukemia and NHL.
January 8, 2025 at 9:32 PM
I was walking along a trail yesterday and noticed this Madagascar periwinkle (Catharanthus roseus) - the plant that “vinca alkaloid” anti-cancer drugs vincristine and vinblastine were isolated from back in 1961. They’re still used today, especially vincristine for acute lymphoid leukemia and NHL.
Last night I imaged NGC891, the “Silver Sliver” galaxy, an edge-on spiral galaxy with a prominent dust lane about 30 million light-years away in the constellation Andromeda. It is sometimes called The Outer Limits galaxy because it appears in the credits of the TV show.
#astrophotography #galaxy
#astrophotography #galaxy
January 3, 2025 at 2:01 PM
Last night I imaged NGC891, the “Silver Sliver” galaxy, an edge-on spiral galaxy with a prominent dust lane about 30 million light-years away in the constellation Andromeda. It is sometimes called The Outer Limits galaxy because it appears in the credits of the TV show.
#astrophotography #galaxy
#astrophotography #galaxy
My latest Mayo Clinic Proceedings stamp vignette on medical history is now online, about the "Dear Doctor" postcards of the 1950s & 1960s. Most were from Abbott Labs, touting sodium pentothal.
Author link with 50 days free access to the article"
authors.elsevier.com/a/1kN0a5qq8b...
#Deltiology
Author link with 50 days free access to the article"
authors.elsevier.com/a/1kN0a5qq8b...
#Deltiology
January 2, 2025 at 2:44 PM
My latest Mayo Clinic Proceedings stamp vignette on medical history is now online, about the "Dear Doctor" postcards of the 1950s & 1960s. Most were from Abbott Labs, touting sodium pentothal.
Author link with 50 days free access to the article"
authors.elsevier.com/a/1kN0a5qq8b...
#Deltiology
Author link with 50 days free access to the article"
authors.elsevier.com/a/1kN0a5qq8b...
#Deltiology
How fun to be back @danafarber.bsky.social today (for an SIV).
The drive in is just as much of an adventure as it always was…
Nice to see friends & former colleagues in person -
The drive in is just as much of an adventure as it always was…
Nice to see friends & former colleagues in person -
December 17, 2024 at 2:56 PM
How fun to be back @danafarber.bsky.social today (for an SIV).
The drive in is just as much of an adventure as it always was…
Nice to see friends & former colleagues in person -
The drive in is just as much of an adventure as it always was…
Nice to see friends & former colleagues in person -
Thought this was interesting: correlation between spleen length by palpation on physical exam in myelfibrosis versus spleen volume by centrally reviewed radiographic imaging, from a clinical trial described at #ASH24 by John Mascarenhas. There's a trend, but exam is not a super accurate measurement.
December 10, 2024 at 9:13 PM
Thought this was interesting: correlation between spleen length by palpation on physical exam in myelfibrosis versus spleen volume by centrally reviewed radiographic imaging, from a clinical trial described at #ASH24 by John Mascarenhas. There's a trend, but exam is not a super accurate measurement.
The late-breaking abstract session in on-demand video form also makes great "background music" while packing up in your hotel room #ASH24
The late-breaking abstracts — substantive, novel, and groundbreaking #hematology data that were not available by the general abstract submission deadline — are now being presented at #ASH24!
Read the ASH press releases: bit.ly/3D5vLE5 #HemeSky
Read the ASH press releases: bit.ly/3D5vLE5 #HemeSky
December 10, 2024 at 4:06 PM
The late-breaking abstract session in on-demand video form also makes great "background music" while packing up in your hotel room #ASH24
As promised, the answer key to yesterday’s @ash-hematology.bsky.social #ASH24 crossword puzzle - hope you enjoyed it!
December 8, 2024 at 4:20 PM
As promised, the answer key to yesterday’s @ash-hematology.bsky.social #ASH24 crossword puzzle - hope you enjoyed it!
The annual #ASH24 hematology-themed crossword puzzle - the 13th one that @ASH_hematology has asked me to create for the @ash-hematology.bsky.social “ASH News Daily” conference newspaper.
I’ll post the answers tomorrow…
I’ll post the answers tomorrow…
December 7, 2024 at 2:28 PM
The annual #ASH24 hematology-themed crossword puzzle - the 13th one that @ASH_hematology has asked me to create for the @ash-hematology.bsky.social “ASH News Daily” conference newspaper.
I’ll post the answers tomorrow…
I’ll post the answers tomorrow…
Over the holiday I read this epic 1955 book by famous naturalist & field guide pioneer Roger Tory Peterson & British ornithologist James Fisher about their 30,000 mile journey around North America in 1953, exploring from Newfoundland to the Dry Tortugas, from the Channel Islands to the Pribilofs./1
December 4, 2024 at 1:44 AM
Over the holiday I read this epic 1955 book by famous naturalist & field guide pioneer Roger Tory Peterson & British ornithologist James Fisher about their 30,000 mile journey around North America in 1953, exploring from Newfoundland to the Dry Tortugas, from the Channel Islands to the Pribilofs./1
Happy Thanksgiving - and if you have a gathering at your home, don’t forget the old rule: the first person to bring up politics has to do the dishes. 😉
November 28, 2024 at 2:10 PM
Happy Thanksgiving - and if you have a gathering at your home, don’t forget the old rule: the first person to bring up politics has to do the dishes. 😉
M31/Andromeda, with a cameo from M110. Not bad for Bortle 6-7 skies (suburban Boston), with only a 50mm lens and 2MP CMOS sensor - the S50’s newish mosaic mode is really cool, and minimizes field rotation effect from the alt-az mount. Processed in Siril & GraXpert.
November 27, 2024 at 5:17 PM
M31/Andromeda, with a cameo from M110. Not bad for Bortle 6-7 skies (suburban Boston), with only a 50mm lens and 2MP CMOS sensor - the S50’s newish mosaic mode is really cool, and minimizes field rotation effect from the alt-az mount. Processed in Siril & GraXpert.
Common Eiders and American Herring Gulls living in harmony. BHI - Deer Island, November 24.
November 25, 2024 at 5:43 PM
Common Eiders and American Herring Gulls living in harmony. BHI - Deer Island, November 24.
I got too close to this herring gull while it was trying to eat breakfast and it stared me down, "Are you going to let me finish this or not?"
November 25, 2024 at 5:40 PM
I got too close to this herring gull while it was trying to eat breakfast and it stared me down, "Are you going to let me finish this or not?"
Photo 1: California Nebula/NGC1499, 800x 10s subs with S50, processed in GraXpert and Siril, Bortle 6 sky.
Photo 2: also California Nebula, this time with labels. 😀
If only ξ Persei/Menkib were slightly closer, it would be perfect for Vegas to be represented by a disproportionately bright star.
Photo 2: also California Nebula, this time with labels. 😀
If only ξ Persei/Menkib were slightly closer, it would be perfect for Vegas to be represented by a disproportionately bright star.
November 25, 2024 at 5:29 PM
Photo 1: California Nebula/NGC1499, 800x 10s subs with S50, processed in GraXpert and Siril, Bortle 6 sky.
Photo 2: also California Nebula, this time with labels. 😀
If only ξ Persei/Menkib were slightly closer, it would be perfect for Vegas to be represented by a disproportionately bright star.
Photo 2: also California Nebula, this time with labels. 😀
If only ξ Persei/Menkib were slightly closer, it would be perfect for Vegas to be represented by a disproportionately bright star.
JetBlue flight from Jacksonville landing at Logan Airport this morning, photographed from BHI-Deer Island while I was out birding. (Big noisy bird.)
November 24, 2024 at 4:57 PM
JetBlue flight from Jacksonville landing at Logan Airport this morning, photographed from BHI-Deer Island while I was out birding. (Big noisy bird.)
This was my first attempt to make an educational #HemSky hematology thread on Bluesky. It seems to work…so-so.
Links take up more space, and the thread (23 small posts) got broken up in a way that doesn’t happen on X/Twitter. Will keep working on it - maybe it will be fixed in future updates.
Links take up more space, and the thread (23 small posts) got broken up in a way that doesn’t happen on X/Twitter. Will keep working on it - maybe it will be fixed in future updates.
November 23, 2024 at 6:19 AM
This was my first attempt to make an educational #HemSky hematology thread on Bluesky. It seems to work…so-so.
Links take up more space, and the thread (23 small posts) got broken up in a way that doesn’t happen on X/Twitter. Will keep working on it - maybe it will be fixed in future updates.
Links take up more space, and the thread (23 small posts) got broken up in a way that doesn’t happen on X/Twitter. Will keep working on it - maybe it will be fixed in future updates.
Hematologists & pathologists find these cells fascinating: ring sideroblasts.
While most commonly associated with #MDS or inherited genetic disorders like #XLSA or #MLASA, these cells can also result from ethanol or tuberculosis drugs - even hypothermia.
They have such an interesting history!/1
While most commonly associated with #MDS or inherited genetic disorders like #XLSA or #MLASA, these cells can also result from ethanol or tuberculosis drugs - even hypothermia.
They have such an interesting history!/1
November 22, 2024 at 9:38 PM
Snowy memory from #ASH17 in Atlanta, unlikely to be repeated at #ASH24 in San Diego #ASHThrowback @ash-hematology.bsky.social
November 22, 2024 at 2:07 PM
Snowy memory from #ASH17 in Atlanta, unlikely to be repeated at #ASH24 in San Diego #ASHThrowback @ash-hematology.bsky.social
Just finished reading this @ash-hematology.bsky.social Blood article about RBC transfusion strategies, arguing imprecise “restrictive”, “liberal” and “transfusion trigger” terms should be retired. It’s interesting how transfusion practice has changed/1 #HemSky
ashpublications.org/blood/articl...
ashpublications.org/blood/articl...
Hemoglobin-based transfusion strategies for cardiovascular and other diseases: restrictive, liberal, or neither?
Natanson and colleagues provide a timely Perspective discussing the evidence for use of a hemoglobin value as a trigger for red blood cell transfusion in c
ashpublications.org
November 20, 2024 at 7:13 PM
Just finished reading this @ash-hematology.bsky.social Blood article about RBC transfusion strategies, arguing imprecise “restrictive”, “liberal” and “transfusion trigger” terms should be retired. It’s interesting how transfusion practice has changed/1 #HemSky
ashpublications.org/blood/articl...
ashpublications.org/blood/articl...