PathologyOutlines.com
@pathologyoutlines.bsky.social
PathologyOutlines.com is a free, no-registration site with a unique, comprehensive, regularly updated textbook of surgical and clinical pathology, providing useful professional content for practicing pathologists and lab personnel, in 15 seconds or less.
Have you started your holiday shopping? Our official merchandise shop is having another sale, starting today! Save 30% on orders of $70+ on November 28-30. We have new Christmas-themed items and 25th anniversary merch!
Link: buff.ly/NZRSURg
#Pathology #PathologyOutlines #BlackFriday #PathSky
Link: buff.ly/NZRSURg
#Pathology #PathologyOutlines #BlackFriday #PathSky
November 28, 2025 at 2:02 PM
Have you started your holiday shopping? Our official merchandise shop is having another sale, starting today! Save 30% on orders of $70+ on November 28-30. We have new Christmas-themed items and 25th anniversary merch!
Link: buff.ly/NZRSURg
#Pathology #PathologyOutlines #BlackFriday #PathSky
Link: buff.ly/NZRSURg
#Pathology #PathologyOutlines #BlackFriday #PathSky
Image of the Week!
Contributed by: Kelly Magliocca, D.D.S., M.P.H.
Textbook topic: Mandible & maxilla
Diagnosis: Ameloblastic carcinoma
Textbook topic link: www.pathologyoutlines.com/topic/mandib...
#Pathology #PathologyOutlines #PathSky
Contributed by: Kelly Magliocca, D.D.S., M.P.H.
Textbook topic: Mandible & maxilla
Diagnosis: Ameloblastic carcinoma
Textbook topic link: www.pathologyoutlines.com/topic/mandib...
#Pathology #PathologyOutlines #PathSky
November 26, 2025 at 6:09 PM
Image of the Week!
Contributed by: Kelly Magliocca, D.D.S., M.P.H.
Textbook topic: Mandible & maxilla
Diagnosis: Ameloblastic carcinoma
Textbook topic link: www.pathologyoutlines.com/topic/mandib...
#Pathology #PathologyOutlines #PathSky
Contributed by: Kelly Magliocca, D.D.S., M.P.H.
Textbook topic: Mandible & maxilla
Diagnosis: Ameloblastic carcinoma
Textbook topic link: www.pathologyoutlines.com/topic/mandib...
#Pathology #PathologyOutlines #PathSky
Image Quiz!
Which of the following immunohistochemical stains can be focally positive in PRRX1 rearranged mesenchymal tumor?
A. CD34 and STAT6
B. DOG1 and CD117
C. S100 protein and SOX10
D. SMA and desmin
Answer linked in the comments.
#Pathology #PathologyOutlines #Diagnosis #PathSky
Which of the following immunohistochemical stains can be focally positive in PRRX1 rearranged mesenchymal tumor?
A. CD34 and STAT6
B. DOG1 and CD117
C. S100 protein and SOX10
D. SMA and desmin
Answer linked in the comments.
#Pathology #PathologyOutlines #Diagnosis #PathSky
November 25, 2025 at 6:30 PM
Image Quiz!
Which of the following immunohistochemical stains can be focally positive in PRRX1 rearranged mesenchymal tumor?
A. CD34 and STAT6
B. DOG1 and CD117
C. S100 protein and SOX10
D. SMA and desmin
Answer linked in the comments.
#Pathology #PathologyOutlines #Diagnosis #PathSky
Which of the following immunohistochemical stains can be focally positive in PRRX1 rearranged mesenchymal tumor?
A. CD34 and STAT6
B. DOG1 and CD117
C. S100 protein and SOX10
D. SMA and desmin
Answer linked in the comments.
#Pathology #PathologyOutlines #Diagnosis #PathSky
Curing Cancer Network was created by Dr. Nat Pernick with the goal of substantially reducing cancer deaths by sharing innovative cancer ideas and seeking input from the worldwide pathology and scientific community.
Latest CCN newsletter: buff.ly/mHnNHbT
#Cancer #CuringCancerNetwork #Pathology
Latest CCN newsletter: buff.ly/mHnNHbT
#Cancer #CuringCancerNetwork #Pathology
November 21, 2025 at 5:26 PM
Curing Cancer Network was created by Dr. Nat Pernick with the goal of substantially reducing cancer deaths by sharing innovative cancer ideas and seeking input from the worldwide pathology and scientific community.
Latest CCN newsletter: buff.ly/mHnNHbT
#Cancer #CuringCancerNetwork #Pathology
Latest CCN newsletter: buff.ly/mHnNHbT
#Cancer #CuringCancerNetwork #Pathology
Case of the Month: A 70 year old woman presents with a 6 mm pink keratotic papule with central erosion on the skin of the left paraspinal mid-back. What is your diagnosis?
Follow the link in the comments for the case!
#Pathology #PathologyOutlines #Diagnosis #PathSky
Follow the link in the comments for the case!
#Pathology #PathologyOutlines #Diagnosis #PathSky
November 20, 2025 at 7:59 PM
Case of the Month: A 70 year old woman presents with a 6 mm pink keratotic papule with central erosion on the skin of the left paraspinal mid-back. What is your diagnosis?
Follow the link in the comments for the case!
#Pathology #PathologyOutlines #Diagnosis #PathSky
Follow the link in the comments for the case!
#Pathology #PathologyOutlines #Diagnosis #PathSky
Image of the Week!
Contributed by: Hamzah Rehan, D.O.
Textbook topic: Bone marrow neoplastic
Diagnosis: MDS with mutated TP53
Textbook topic link: www.pathologyoutlines.com/topic/bonema...
#Pathology #PathologyOutlines
Contributed by: Hamzah Rehan, D.O.
Textbook topic: Bone marrow neoplastic
Diagnosis: MDS with mutated TP53
Textbook topic link: www.pathologyoutlines.com/topic/bonema...
#Pathology #PathologyOutlines
November 19, 2025 at 8:08 PM
Image of the Week!
Contributed by: Hamzah Rehan, D.O.
Textbook topic: Bone marrow neoplastic
Diagnosis: MDS with mutated TP53
Textbook topic link: www.pathologyoutlines.com/topic/bonema...
#Pathology #PathologyOutlines
Contributed by: Hamzah Rehan, D.O.
Textbook topic: Bone marrow neoplastic
Diagnosis: MDS with mutated TP53
Textbook topic link: www.pathologyoutlines.com/topic/bonema...
#Pathology #PathologyOutlines
Join us on Nov. 20 (11am ET | 4pm GMT) for a webinar on the integration of PathologyOutlines.com and PathologyMap™, HistoWiz’s digital slide platform. Learn how it enhances access to interactive whole-slide images.
🔗 buff.ly/Z8ltypQ
#Pathology #PathologyOutlines #HistoWiz #PathologyNews #PathSky
🔗 buff.ly/Z8ltypQ
#Pathology #PathologyOutlines #HistoWiz #PathologyNews #PathSky
November 18, 2025 at 6:51 PM
Join us on Nov. 20 (11am ET | 4pm GMT) for a webinar on the integration of PathologyOutlines.com and PathologyMap™, HistoWiz’s digital slide platform. Learn how it enhances access to interactive whole-slide images.
🔗 buff.ly/Z8ltypQ
#Pathology #PathologyOutlines #HistoWiz #PathologyNews #PathSky
🔗 buff.ly/Z8ltypQ
#Pathology #PathologyOutlines #HistoWiz #PathologyNews #PathSky
“My Male Breast Cancer, Parts 4 and 5” by Dr. Nat Pernick
In part 4, Dr. Pernick discusses radiation therapy he received. In part 5, he discusses his experience with Lupron.
Essays: buff.ly/j353xvm
Curing Cancer Network: buff.ly/bUxL5hq
#Cancer #CuringCancerNetwork #Pathology #PathologyOutlines
In part 4, Dr. Pernick discusses radiation therapy he received. In part 5, he discusses his experience with Lupron.
Essays: buff.ly/j353xvm
Curing Cancer Network: buff.ly/bUxL5hq
#Cancer #CuringCancerNetwork #Pathology #PathologyOutlines
November 17, 2025 at 7:37 PM
“My Male Breast Cancer, Parts 4 and 5” by Dr. Nat Pernick
In part 4, Dr. Pernick discusses radiation therapy he received. In part 5, he discusses his experience with Lupron.
Essays: buff.ly/j353xvm
Curing Cancer Network: buff.ly/bUxL5hq
#Cancer #CuringCancerNetwork #Pathology #PathologyOutlines
In part 4, Dr. Pernick discusses radiation therapy he received. In part 5, he discusses his experience with Lupron.
Essays: buff.ly/j353xvm
Curing Cancer Network: buff.ly/bUxL5hq
#Cancer #CuringCancerNetwork #Pathology #PathologyOutlines
Join us on Nov. 20 (11am ET | 4pm GMT) for a webinar on the integration of PathologyOutlines.com and PathologyMap™, HistoWiz’s digital slide platform. Learn how it enhances access to interactive whole-slide images.
🔗 buff.ly/Z8ltypQ
#Pathology #PathologyOutlines #HistoWiz #PathologyNews #PathSky
🔗 buff.ly/Z8ltypQ
#Pathology #PathologyOutlines #HistoWiz #PathologyNews #PathSky
November 13, 2025 at 7:54 PM
Join us on Nov. 20 (11am ET | 4pm GMT) for a webinar on the integration of PathologyOutlines.com and PathologyMap™, HistoWiz’s digital slide platform. Learn how it enhances access to interactive whole-slide images.
🔗 buff.ly/Z8ltypQ
#Pathology #PathologyOutlines #HistoWiz #PathologyNews #PathSky
🔗 buff.ly/Z8ltypQ
#Pathology #PathologyOutlines #HistoWiz #PathologyNews #PathSky
Image of the Week!
Contributed by: Roberto N. Miranda, M.D.
Textbook topic: Lymphoma & related disorders
Diagnosis: Plasmablastic lymphoma in HIV+ patient
Textbook topic link: www.pathologyoutlines.com/topic/lympho...
#Pathology #PathologyOutlines
Contributed by: Roberto N. Miranda, M.D.
Textbook topic: Lymphoma & related disorders
Diagnosis: Plasmablastic lymphoma in HIV+ patient
Textbook topic link: www.pathologyoutlines.com/topic/lympho...
#Pathology #PathologyOutlines
November 12, 2025 at 7:00 PM
Image of the Week!
Contributed by: Roberto N. Miranda, M.D.
Textbook topic: Lymphoma & related disorders
Diagnosis: Plasmablastic lymphoma in HIV+ patient
Textbook topic link: www.pathologyoutlines.com/topic/lympho...
#Pathology #PathologyOutlines
Contributed by: Roberto N. Miranda, M.D.
Textbook topic: Lymphoma & related disorders
Diagnosis: Plasmablastic lymphoma in HIV+ patient
Textbook topic link: www.pathologyoutlines.com/topic/lympho...
#Pathology #PathologyOutlines
Image Quiz!
An 18 year old woman presented with a destructive sinonasal tumor; biopsy findings are shown. What immunohistochemical finding would you expect?
(Continued in thread)
#Pathology #PathologyOutlines #Diagnosis
An 18 year old woman presented with a destructive sinonasal tumor; biopsy findings are shown. What immunohistochemical finding would you expect?
(Continued in thread)
#Pathology #PathologyOutlines #Diagnosis
November 11, 2025 at 7:39 PM
Image Quiz!
An 18 year old woman presented with a destructive sinonasal tumor; biopsy findings are shown. What immunohistochemical finding would you expect?
(Continued in thread)
#Pathology #PathologyOutlines #Diagnosis
An 18 year old woman presented with a destructive sinonasal tumor; biopsy findings are shown. What immunohistochemical finding would you expect?
(Continued in thread)
#Pathology #PathologyOutlines #Diagnosis
Have you started your holiday shopping? Our official merchandise shop is having a 20% off sale starting tomorrow, November 11-16! We have new Christmas-themed items and 25th anniversary merch. Our shop is linked in the comments!
#Pathology #PathologyOutlines
#Pathology #PathologyOutlines
November 10, 2025 at 7:08 PM
Have you started your holiday shopping? Our official merchandise shop is having a 20% off sale starting tomorrow, November 11-16! We have new Christmas-themed items and 25th anniversary merch. Our shop is linked in the comments!
#Pathology #PathologyOutlines
#Pathology #PathologyOutlines
Image of the Week!
Submitted by: Busra Yaprak Bayrak, M.D.
Directory Profile: www.pathologyoutlines.com/directory/bu...
Subspecialty: Pulmonary/thoracic
Diagnosis: Pulmonary hamartoma
#Pathology #PathologyOutlines
Submitted by: Busra Yaprak Bayrak, M.D.
Directory Profile: www.pathologyoutlines.com/directory/bu...
Subspecialty: Pulmonary/thoracic
Diagnosis: Pulmonary hamartoma
#Pathology #PathologyOutlines
November 6, 2025 at 7:58 PM
Image of the Week!
Submitted by: Busra Yaprak Bayrak, M.D.
Directory Profile: www.pathologyoutlines.com/directory/bu...
Subspecialty: Pulmonary/thoracic
Diagnosis: Pulmonary hamartoma
#Pathology #PathologyOutlines
Submitted by: Busra Yaprak Bayrak, M.D.
Directory Profile: www.pathologyoutlines.com/directory/bu...
Subspecialty: Pulmonary/thoracic
Diagnosis: Pulmonary hamartoma
#Pathology #PathologyOutlines
Today is International Pathology Day! We celebrate the vital role pathology plays in healthcare and honor the dedicated professionals whose expertise drives accurate diagnoses and improved patient outcomes. Thank you to all in this essential field! 💙🔬
#InternationalPathologyDay #IPD2025 #Pathology
#InternationalPathologyDay #IPD2025 #Pathology
November 5, 2025 at 5:39 PM
Today is International Pathology Day! We celebrate the vital role pathology plays in healthcare and honor the dedicated professionals whose expertise drives accurate diagnoses and improved patient outcomes. Thank you to all in this essential field! 💙🔬
#InternationalPathologyDay #IPD2025 #Pathology
#InternationalPathologyDay #IPD2025 #Pathology
🎉As part of our 25th anniversary celebration, we invite you to share your favorite PathOut photos (conference moments or merch sightings) with us at comments@pathologyoutlines.com. 📸 Selected submissions will be featured at a later date.
#Pathology #PathologyOutlines #PathSky
#Pathology #PathologyOutlines #PathSky
November 3, 2025 at 6:57 PM
🎉As part of our 25th anniversary celebration, we invite you to share your favorite PathOut photos (conference moments or merch sightings) with us at comments@pathologyoutlines.com. 📸 Selected submissions will be featured at a later date.
#Pathology #PathologyOutlines #PathSky
#Pathology #PathologyOutlines #PathSky
Join us on Nov. 20 (11am ET | 4pm GMT) for a webinar on the integration of PathologyOutlines.com and PathologyMap™, HistoWiz’s digital slide platform. Learn how it enhances access to interactive whole-slide images.
🔗 buff.ly/Z8ltypQ
#Pathology #PathologyOutlines #HistoWiz #PathologyNews #PathSky
🔗 buff.ly/Z8ltypQ
#Pathology #PathologyOutlines #HistoWiz #PathologyNews #PathSky
October 31, 2025 at 4:16 PM
Join us on Nov. 20 (11am ET | 4pm GMT) for a webinar on the integration of PathologyOutlines.com and PathologyMap™, HistoWiz’s digital slide platform. Learn how it enhances access to interactive whole-slide images.
🔗 buff.ly/Z8ltypQ
#Pathology #PathologyOutlines #HistoWiz #PathologyNews #PathSky
🔗 buff.ly/Z8ltypQ
#Pathology #PathologyOutlines #HistoWiz #PathologyNews #PathSky
Image of the Week!
Submitted by: Mahvash Nematollahi, M.D.
Directory Profile: www.pathologyoutlines.com/directory/ma...
Subspecialty: Neuropathology
Diagnosis: Oligodendroglioma
#Pathology #PathologyOutlines #PathSky
Submitted by: Mahvash Nematollahi, M.D.
Directory Profile: www.pathologyoutlines.com/directory/ma...
Subspecialty: Neuropathology
Diagnosis: Oligodendroglioma
#Pathology #PathologyOutlines #PathSky
October 29, 2025 at 6:10 PM
Image of the Week!
Submitted by: Mahvash Nematollahi, M.D.
Directory Profile: www.pathologyoutlines.com/directory/ma...
Subspecialty: Neuropathology
Diagnosis: Oligodendroglioma
#Pathology #PathologyOutlines #PathSky
Submitted by: Mahvash Nematollahi, M.D.
Directory Profile: www.pathologyoutlines.com/directory/ma...
Subspecialty: Neuropathology
Diagnosis: Oligodendroglioma
#Pathology #PathologyOutlines #PathSky
Image Quiz!
An incidental breast lump is noted on screening mammography in an adult woman. Which of the following IHC stains could be used to support the diagnosis?
A. ER, PR and HER2
B. OSCAR and CK903
C. SOX10 and S100
D. STAT6 and CD34
See answer in comments.
#Pathology #PathologyOutlines
An incidental breast lump is noted on screening mammography in an adult woman. Which of the following IHC stains could be used to support the diagnosis?
A. ER, PR and HER2
B. OSCAR and CK903
C. SOX10 and S100
D. STAT6 and CD34
See answer in comments.
#Pathology #PathologyOutlines
October 28, 2025 at 6:27 PM
Image Quiz!
An incidental breast lump is noted on screening mammography in an adult woman. Which of the following IHC stains could be used to support the diagnosis?
A. ER, PR and HER2
B. OSCAR and CK903
C. SOX10 and S100
D. STAT6 and CD34
See answer in comments.
#Pathology #PathologyOutlines
An incidental breast lump is noted on screening mammography in an adult woman. Which of the following IHC stains could be used to support the diagnosis?
A. ER, PR and HER2
B. OSCAR and CK903
C. SOX10 and S100
D. STAT6 and CD34
See answer in comments.
#Pathology #PathologyOutlines
We’re celebrating 25 years of PathologyOutlines.com! Here’s a sneak peek at the kind messages that our booth visitors at ECP and CAP shared. See the full images on our Testimonials page via the link in comments. Thanks to all who took time to write us a note!
#Pathology #PathologyOutlines #PathSky
#Pathology #PathologyOutlines #PathSky
October 27, 2025 at 6:54 PM
We’re celebrating 25 years of PathologyOutlines.com! Here’s a sneak peek at the kind messages that our booth visitors at ECP and CAP shared. See the full images on our Testimonials page via the link in comments. Thanks to all who took time to write us a note!
#Pathology #PathologyOutlines #PathSky
#Pathology #PathologyOutlines #PathSky
Case of the Month: A 2 year old boy presents to his pediatrician with pallor, fatigue and shortness of breath when playing. He lives with his parents and 4 siblings on a dairy farm.
Access the rest of the clinical history and more via the link in comments.
#Pathology #PathologyOutlines #PathSky
Access the rest of the clinical history and more via the link in comments.
#Pathology #PathologyOutlines #PathSky
October 24, 2025 at 6:07 PM
Case of the Month: A 2 year old boy presents to his pediatrician with pallor, fatigue and shortness of breath when playing. He lives with his parents and 4 siblings on a dairy farm.
Access the rest of the clinical history and more via the link in comments.
#Pathology #PathologyOutlines #PathSky
Access the rest of the clinical history and more via the link in comments.
#Pathology #PathologyOutlines #PathSky
Image of the Week!
Submitted by: Nirajan Mainali, M.D.
Directory Profile: www.pathologyoutlines.com/directory/ni...
Subspecialty: Medical renal
Diagnosis: Crescentic glomerulonephritis
#Pathology #PathologyOutlines #PathSky
Submitted by: Nirajan Mainali, M.D.
Directory Profile: www.pathologyoutlines.com/directory/ni...
Subspecialty: Medical renal
Diagnosis: Crescentic glomerulonephritis
#Pathology #PathologyOutlines #PathSky
October 23, 2025 at 8:30 PM
Image of the Week!
Submitted by: Nirajan Mainali, M.D.
Directory Profile: www.pathologyoutlines.com/directory/ni...
Subspecialty: Medical renal
Diagnosis: Crescentic glomerulonephritis
#Pathology #PathologyOutlines #PathSky
Submitted by: Nirajan Mainali, M.D.
Directory Profile: www.pathologyoutlines.com/directory/ni...
Subspecialty: Medical renal
Diagnosis: Crescentic glomerulonephritis
#Pathology #PathologyOutlines #PathSky
Dr. Lott Limbach was recently appointed to our Board of Reviewers for Head & Neck Pathology. Dr. Lott Limbach is an associate professor of pathology at The Ohio State University Wexner Medical Center.
Read More: buff.ly/RyUUjwZ
Our Boards: buff.ly/kOced2i
#Pathology #PathologyOutlines #PathSky
Read More: buff.ly/RyUUjwZ
Our Boards: buff.ly/kOced2i
#Pathology #PathologyOutlines #PathSky
October 21, 2025 at 8:42 PM
Dr. Lott Limbach was recently appointed to our Board of Reviewers for Head & Neck Pathology. Dr. Lott Limbach is an associate professor of pathology at The Ohio State University Wexner Medical Center.
Read More: buff.ly/RyUUjwZ
Our Boards: buff.ly/kOced2i
#Pathology #PathologyOutlines #PathSky
Read More: buff.ly/RyUUjwZ
Our Boards: buff.ly/kOced2i
#Pathology #PathologyOutlines #PathSky
Read the latest Curing Cancer Network newsletter: www.pathologyoutlines.com/ccnnewslette...
Follow CCN on LinkedIn: www.linkedin.com/company/curi...
#Cancer #CancerResearch #CuringCancerNetwork #Pathology #PathSky
Follow CCN on LinkedIn: www.linkedin.com/company/curi...
#Cancer #CancerResearch #CuringCancerNetwork #Pathology #PathSky
October 20, 2025 at 7:33 PM
Read the latest Curing Cancer Network newsletter: www.pathologyoutlines.com/ccnnewslette...
Follow CCN on LinkedIn: www.linkedin.com/company/curi...
#Cancer #CancerResearch #CuringCancerNetwork #Pathology #PathSky
Follow CCN on LinkedIn: www.linkedin.com/company/curi...
#Cancer #CancerResearch #CuringCancerNetwork #Pathology #PathSky
Join us on Nov. 20 (11am ET | 4pm GMT) for a webinar on the integration of PathologyOutlines.com and PathologyMap™, HistoWiz’s digital slide platform. Learn how it enhances access to interactive whole-slide images.
🔗 buff.ly/Z8ltypQ
#Pathology #PathologyOutlines #HistoWiz #PathologyNews #PathSky
🔗 buff.ly/Z8ltypQ
#Pathology #PathologyOutlines #HistoWiz #PathologyNews #PathSky
October 17, 2025 at 5:46 PM
Join us on Nov. 20 (11am ET | 4pm GMT) for a webinar on the integration of PathologyOutlines.com and PathologyMap™, HistoWiz’s digital slide platform. Learn how it enhances access to interactive whole-slide images.
🔗 buff.ly/Z8ltypQ
#Pathology #PathologyOutlines #HistoWiz #PathologyNews #PathSky
🔗 buff.ly/Z8ltypQ
#Pathology #PathologyOutlines #HistoWiz #PathologyNews #PathSky
Image of the Week!
Submitted by: Fathima Seles, M.B.B.S.
Directory Profile: www.pathologyoutlines.com/directory/fa...
Subspecialty: Histopathology
Diagnosis: Trichinosis
#Pathology #PathologyOutlines #PathSky
Submitted by: Fathima Seles, M.B.B.S.
Directory Profile: www.pathologyoutlines.com/directory/fa...
Subspecialty: Histopathology
Diagnosis: Trichinosis
#Pathology #PathologyOutlines #PathSky
October 15, 2025 at 6:17 PM
Image of the Week!
Submitted by: Fathima Seles, M.B.B.S.
Directory Profile: www.pathologyoutlines.com/directory/fa...
Subspecialty: Histopathology
Diagnosis: Trichinosis
#Pathology #PathologyOutlines #PathSky
Submitted by: Fathima Seles, M.B.B.S.
Directory Profile: www.pathologyoutlines.com/directory/fa...
Subspecialty: Histopathology
Diagnosis: Trichinosis
#Pathology #PathologyOutlines #PathSky