Richard Carr
@racarr51.bsky.social
Dermatopathologist, Warwick Hospital UK. Interested in all dermatopathology esp. keratocanthoma (KA) & follicular SCC-KA-like. Personal interests: Golf, cider making, dogs - especially fostering guide dogs. Family = No1.
I appreciate there is a single atypical mitotic figure but you should note multinucleation. When a multinucleate cell divides it's mitosis will be atypical. I reported it as a poroma. One more image here (nice coffee-bean).
November 16, 2025 at 6:10 PM
I appreciate there is a single atypical mitotic figure but you should note multinucleation. When a multinucleate cell divides it's mitosis will be atypical. I reported it as a poroma. One more image here (nice coffee-bean).
RAC3910: x4 more images at request of @rishiagrawal.bsky.social
November 16, 2025 at 5:23 PM
RAC3910: x4 more images at request of @rishiagrawal.bsky.social
RAC3910 M60s. Dorsal foot warty lesion. ?VW ?SCC.#Dermpath @iyengarish.bsky.social
November 16, 2025 at 12:34 PM
RAC3910 M60s. Dorsal foot warty lesion. ?VW ?SCC.#Dermpath @iyengarish.bsky.social
RAC9309: M80s. Lower back, ?SEBK, shave. H&Ex4 #Dermpath @rishiagrawal.bsky.social
November 16, 2025 at 6:56 AM
RAC9309: M80s. Lower back, ?SEBK, shave. H&Ex4 #Dermpath @rishiagrawal.bsky.social
RAC9306: EVG & Commentry. Then MSH6 (loss) & PMS2. Advised referral to medical genetics to rule out Muir Torre Syndrome (familial cancer associated syndrome).
November 4, 2025 at 7:05 AM
RAC9306: EVG & Commentry. Then MSH6 (loss) & PMS2. Advised referral to medical genetics to rule out Muir Torre Syndrome (familial cancer associated syndrome).
RAC9300: IHC as requested @rishiagrawal.bsky.social
October 30, 2025 at 8:34 AM
RAC9300: IHC as requested @rishiagrawal.bsky.social
RAC9306. EVG & Discussion. I thought this was a mitotic sebaceoma / sebaceous adenoma. MSH6 & PMS2 requested. So far been sceptical about clear-cut Seb Ca & MTS. See a lot mitotically active lesions erroneously called carcinoma.
October 27, 2025 at 3:58 PM
RAC9306. EVG & Discussion. I thought this was a mitotic sebaceoma / sebaceous adenoma. MSH6 & PMS2 requested. So far been sceptical about clear-cut Seb Ca & MTS. See a lot mitotically active lesions erroneously called carcinoma.
RAC9306: IHC Montages, EVG & Comment Summary to follow
October 27, 2025 at 3:56 PM
RAC9306: IHC Montages, EVG & Comment Summary to follow
RAC9300. Lower powers. @rishiagrawal.bsky.social #dermpath
October 27, 2025 at 3:41 PM
RAC9300. Lower powers. @rishiagrawal.bsky.social #dermpath
RAC9300. F80 ish. Neck. ?SK ?AK
October 27, 2025 at 3:40 PM
RAC9300. F80 ish. Neck. ?SK ?AK
RAC9306: IHC here p16, p53, Ki67 @rishiagrawal.bsky.social These are representative.
October 27, 2025 at 3:38 PM
RAC9306: IHC here p16, p53, Ki67 @rishiagrawal.bsky.social These are representative.
RAC9306. M80s. Nose. SCC. #dermpath @rishiagrawal.bsky.social
October 26, 2025 at 1:43 PM
RAC9306. M80s. Nose. SCC. #dermpath @rishiagrawal.bsky.social
Great to be in Cape Town. Wayne Grayson introducing the XLIV symposium of the ISDP = International Society of Dermatopathology.
October 20, 2025 at 6:52 AM
Great to be in Cape Town. Wayne Grayson introducing the XLIV symposium of the ISDP = International Society of Dermatopathology.
RAC9302: What you need to asses such lesions. p16 & p53 - you should be able to work out which is which.
October 8, 2025 at 3:59 PM
RAC9302: What you need to asses such lesions. p16 & p53 - you should be able to work out which is which.
RAC9302 M80s Presternum. ?SCC #Dermpath @rishiagrawal.bsky.social
October 7, 2025 at 7:29 AM
RAC9302 M80s Presternum. ?SCC #Dermpath @rishiagrawal.bsky.social
This was an SCC arising in actinic keratosis (4 more images here). There was tumour in a small muscular vessel in the deep dermis I interpreted as a vein. It's uncommon but can happen in SCC as well as otherwise typical KA and even in BCC. I find most SCC are de novo or follicular type.
October 4, 2025 at 1:57 PM
This was an SCC arising in actinic keratosis (4 more images here). There was tumour in a small muscular vessel in the deep dermis I interpreted as a vein. It's uncommon but can happen in SCC as well as otherwise typical KA and even in BCC. I find most SCC are de novo or follicular type.
RAC9299 F70s. Mid Upper Chest. #Dermpath @rishiagrawal.bsky.social
October 4, 2025 at 7:53 AM
RAC9299 F70s. Mid Upper Chest. #Dermpath @rishiagrawal.bsky.social
RAC9295. What we really really want....Discuss, #Dermpath @rishiagrawal.bsky.social @lorandkis.bsky.social
September 26, 2025 at 8:27 AM
RAC9295. What we really really want....Discuss, #Dermpath @rishiagrawal.bsky.social @lorandkis.bsky.social
RAC9295 M80s Lower abdomen. No history given! #Dermpath @rishiagrawal.bsky.social
September 25, 2025 at 7:19 AM
RAC9295 M80s Lower abdomen. No history given! #Dermpath @rishiagrawal.bsky.social
RAC9234. 4 more images, try again!
September 20, 2025 at 10:49 AM
RAC9234. 4 more images, try again!
RAC9232 Lab gives you this p53 staining for signing off as control tissue. [M80s Right Cheek. Tumour 47mm diameter. Signed out by myself without IHC as FSCC-some KA-like features]. Comments to lab....??? #Dermpath #Immunohistochemistry
September 17, 2025 at 11:19 AM
RAC9232 Lab gives you this p53 staining for signing off as control tissue. [M80s Right Cheek. Tumour 47mm diameter. Signed out by myself without IHC as FSCC-some KA-like features]. Comments to lab....??? #Dermpath #Immunohistochemistry
RAC9231 M30s Cyst in the foreskin. #ItsNeverACyst #Dermpath
September 16, 2025 at 5:15 PM
RAC9231 M30s Cyst in the foreskin. #ItsNeverACyst #Dermpath
RAC9229. M70s Sole of foot 5mm pigmented lesion. #Dermpath #HelpWithDiagnosis please.
September 15, 2025 at 3:40 PM
RAC9229. M70s Sole of foot 5mm pigmented lesion. #Dermpath #HelpWithDiagnosis please.