Introducing gross pathology to undergraduate medical students in the dissecting room

Predictive molecular pathology after prolonged fixation: A study on tissue from anatomical body donors

Histopathological assessment of tissue samples after prolonged formalin fixation has been described previously, but currently there is only limited knowledge regarding the feasibility of molecular pathology on such tissue. In this pilot study, we tested routine molecular pathology methods (DNA isolation, DNA pyrosequencing/next-generation sequencing, DNA methylation analysis, RT-PCR, clonality analysis and fluorescence in situ hybridization) on tissue samples from 11 tumor entities as well as non-neoplastic brain tissue from 43 body donors during the gross anatomy course at Ulm University (winter semester 2019/20 and 2020/21). The mean post mortem interval until fixation was 2.5 ± 1.6 days (range, 1-6 days). Fixation was performed with aqueous formaldehyde solution (formalin, 1.5-2%). The mean storage time of body donors was 12.8 ± 5.6 months (range, 7-25 months). While most diagnostic methods were successful, samples showed significant variability in DNA quality and evaluability. DNA pyrosequencing as well as next-generation sequencing was successful in all investigated samples. Methylation analyses were partially not successful in some extend due to limited intact DNA yield for these analyses. Taken together, the use of prolonged formalin-fixed tissue samples from body donors offers new avenues in research and education, as these samples could be used for morpho-molecular studies and the establishment of biobanks, especially for tissue types that cannot be preserved and studied in vivo. Pathological ward rounds, sample collection, and histopathological and molecular workup have been integrated in the gross anatomy course in Ulm as an integral part of the curriculum, linking anatomy and pathology and providing medical students early insight into the broad field of (molecular) pathology.

Leading the transition to ethical human body sourcing in Africa: The South African experience

BACKGROUND

The use of human bodies for anatomy education and research forms an integral part of the training of health professionals around the world. However, the ethical acquisition of human remains for this purpose has been a challenge in many countries, particularly for those on the African continent. South African institutions have however, been able to progressively transition to a more ethical approach to human body acquisition. The aim of the current study was to investigate the provenance of human bodies and the number used in South African health sciences institutions during the period 2017-2021.

METHODS

an online self-administered anonymised questionnaire was circulated to all health sciences institutions in South Africa. Questions were focused on establishing the provenance and the associated number of bodies and body donor programmes.

RESULTS

responses were received from thirteen of the fourteen South African institutions. All thirteen institutions use human bodies for teaching and research, with the majority of the institutions being reliant on bequests (77%) and family donations (62%), and less on unclaimed remains (46%). Most institutions have established body donor programmes. Four institutions were negatively affected by the effects of the pandemic. Memorial services, which continued during the pandemic, were conducted by eight of the thirteen institutions.

CONCLUSION

South Africa is leading the transition to the ethical acquisition of human remains on the African continent. It is hoped that South African institutions will soon transform to the exclusive sourcing of bodies through willed donation and provide guidance and support for the other countries on the continent.

Growing Medical Educators from Medical Students by Supporting Self-directing Learning Opportunities Born Out of Cadaveric Dissection

This study focuses on a subset of medical students who participated in an anatomy dissection program and undertook an additional self-directed learning (SDL) project investigating incidental findings of cadaveric pathology. The value of SDL activity is explored as a means of enhancing medical student education, particularly its student perceived value in preparing and developing them as future medical educators. It was assessed whether the project advanced student interest in medical education by analyzing their motivations for participation. The results of the study highlight the potential of SDL as an experiential learning opportunity for medical students and the role of anatomic pathology in connecting multiple domains of medical education.

Bridging Anatomy, Histology, and Pathology: A Novel Curriculum Component Incorporating Self-directed Learning for First-Year Medical Students

During cadaveric dissection or prosection, medical students frequently encounter pathology that can be a springboard to further learning. We designed a novel educational activity linking anatomy, histology, and pathology that incorporated self-directed learning and teamwork, followed by feedback and instruction from pathologists. Post-activity, more than 97% of students rated the activity as useful (Likert scale of 1 to 5), indicating this activity should be continued in the future. Strengths included self-directed learning, content and design, and teamwork, peer, and faculty interactions. Clarity of assignment expectations, range of pathologies, and virtual presentation format remained areas for improvement.

Pathology education project (PEP): A pilot program to spark student understanding in pathology as a career

According to the National Resident Matching Program in 2022, 631 pathology positions were offered. In total, 248 senior applicants from United States (US) allopathic schools filled 36.6% of these positions. To bolster medical student understanding of pathology, a medical school pathology interest group organized a multi-day activity to introduce rising second-year medical students to pathology as a career. Five students completed both pre- and post-activity surveys assessing their knowledge of the specialty. All five students had a BA/BS degree as their highest level of education. Only one student indicated that he or she had previously shadowed a pathologist as a medical laboratory scientist for a duration of four years. Two students indicated that they were interested in internal medicine, one indicated radiology, one forensic pathology or radiology, and one was undecided. During the activity, students biopsied tissue from cadavers in the gross anatomy lab. Thereafter, students participated in the standard tissue processing by shadowing a histotechnologist. Under the guidance of a pathologist, students microscopically examined slides and discussed the clinical findings. Post-activity survey results indicated that participation increased their knowledge of pathology as a career with a median increase of 0.8 points (range: 0.2 to 1.6) on a 5-point Likert scale. Students also indicated that their participation increased their knowledge of pathology skills and techniques-median increase of 1.2 (range: 0.8 to 1.8). This activity can be implemented by medical educators to expose medical students to pathology as a career with the benefit of increasing student knowledge in the specialty.

Integration of Scientific Competence into Gross Anatomy Teaching Using Poster Presentations: Feasibility and Perception among Medical Students

Scientific competences as defined in the German competency framework describes the ability to think independently and act scientifically, and forms a central component of medical education. This report describes its integration into anatomical teaching. On the basis of the findings in dissection courses from two consecutive years, students worked on either a case report (n = 70) or an original work (n=6) in the format of a scientific poster while learning to use primary literature. Posters were evaluated by juror teams using standardized evaluation criteria. Student perception of the project was estimated by quantitative and qualitative data obtained from the faculty´s course evaluation and an online-survey. Overall, students worked collaboratively and invested extra-time (median [MD] 3.0 hours) in poster creation. Primary literature was integrated in 90.8% of the posters. Overall poster quality was satisfactory (46.3 ±8.5 [mean ±standard deviation] out of 72 points), but several insufficiencies were identified. Students integrated information gained from the donor´s death certificate, post-mortem full-body computer tomography (CT) scan (22.4%) and histopathological workup (31.6%) in their case reports. Students were positive about the experience of learning new scientific skills (MD 4 on a six-point Likert scale), but free text answers revealed that some students experienced the project as an extra burden in a demanding course. In summary, it was feasible to introduce students to science during the dissection course and to increase interest in science in approximately a third of the survey respondents. Further adjustments to ensure the posters´ scientific quality might be necessary in the future.

Histologic Reliability of Tissues from Embalmed Cadavers: Can They be Useful in Medical Education?

Background:

Current trends in medical curricula are shifting from teaching histology and pathology as stand-alone disciplines. Therefore, it would be useful to examine the potential value of integrating these into the anatomical dissection experience.

Objectives:

The aim of this study was to assess the histologic reliability of tissues taken from embalmed cadavers in an anatomy laboratory.

Materials and Methods:

A total of 112 tissue samples were obtained using standard autopsy techniques from various organs (heart, lung, thyroid, skeletal muscle, bone and skin) of 11 cadavers available at the anatomy laboratory of Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia, in 2019. Samples were prepared using the standard paraffin procedure followed by cutting sections at 4-μm thickness and staining with standard hematoxylin and eosin stain. Using predefined criteria, the quality of the samples was evaluated by two board-certified histopathologists and each slide was categorized as good, satisfactory or poor.

Results:

Overall, 34.2% and 60.3% of the slides were of good and satisfactory quality, respectively. A significant difference in tissue quality was found between various organs. Thick skin and bone tissues had the highest “good” rating (84.6% and 81.8%, respectively), while thyroid and lung tissues had the highest “poor” rating (20% and 13.6%, respectively).

Conclusion:

Most of the tissues acquired from the embalmed cadavers were of good or satisfactory quality, thereby indicating the beneficial use of histological tissue from cadavers for educational purposes. Future research into how these findings translate into meaningful medical education would be beneficial.