Cancer - Revision history

97.185.46.42 at 00:34, 18 August 2025

2025-08-18T00:34:35Z

BCAdmin at 17:59, 16 August 2025

2025-08-16T17:59:35Z

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 = Cancer in Rabbits =
 == Rabbit Cancer Risks vs. Surgical Risks of Spay/Neuter ==
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 In domestic rabbits (''Oryctolagus cuniculus''), one of the most frequently cited justifications for routine elective sterilization procedures is the prevention of reproductive cancers, with particular focus on uterine adenocarcinoma in does. Uterine carcinoma has historically been documented in poorly managed or indiscriminately bred pet lines, leading to its portrayal as an inevitable outcome in intact female rabbits. However, the true risk is considerably more variable than commonly presented.
-Peer-reviewed studies indicate that lifetime incidence of uterine cancer in pet rabbits ranges widely between 8% and 60%, depending heavily on both genetic predisposition and the age profile of the studied population (Greene, 2021; Varga, 2014). In well-bred show or utility lines, where breeders have actively selected against uterine neoplasia for decades, the prevalence is significantly lower. As a result, the absolute cancer-prevention benefit of spaying varies dramatically between populations, and broad claims of "universal" risk are not supported by the literature.
+Peer-reviewed studies indicate that lifetime incidence of uterine cancer in pet rabbits ranges widely between 8% and 60%, depending heavily on both genetic predisposition and the age profile of the studied population (Greene, 1958; Varga, 2014). In well-bred show or utility lines, where breeders have actively selected against uterine neoplasia for decades, the prevalence is significantly lower. As a result, the absolute cancer-prevention benefit of spaying varies dramatically between populations, and broad claims of "universal" risk are not supported by the literature.
 === Surgical Risks Unique to Rabbits ===

BCAdmin: /* Surgical Risks Unique to Rabbits */

2025-08-16T17:52:46Z

Surgical Risks Unique to Rabbits

← Older revision		Revision as of 17:52, 16 August 2025
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	Additional surgical complications include:		Additional surgical complications include:
	* Adhesion formation – Post-surgical adhesions can lead to chronic abdominal pain, recurrent ileus~~, or reduced fertility in partially sterilized animals.~~		* Adhesion formation – Post-surgical adhesions can lead to chronic abdominal pain, recurrent ileus
	* Hemorrhage – Rabbits possess fragile vasculature, making intraoperative bleeding a significant risk.		* Hemorrhage – Rabbits possess fragile vasculature, making intraoperative bleeding a significant risk.
	* Respiratory arrest – Due to unique airway anatomy and anesthetic sensitivity, airway management is more complex than in dogs or cats.		* Respiratory arrest – Due to unique airway anatomy and anesthetic sensitivity, airway management is more complex than in dogs or cats.

	=== Endocrine and Long-Term Health Consequences ===		=== Endocrine and Long-Term Health Consequences ===

BCAdmin: /* References */

2025-08-16T17:50:29Z

References

← Older revision		Revision as of 17:50, 16 August 2025
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	\|-		\|-
	\| Surgical and Anesthetic Risks in Rabbits		\| Surgical and Anesthetic Risks in Rabbits
	\| Rabbits face higher perioperative mortality ~~from~~ complications ~~such as~~ gastrointestinal stasis and ~~post-surgical~~ adhesions.		\| Rabbits face substantially higher perioperative mortality and post-surgical complications, including gastrointestinal stasis and adhesions. Risk varies by health status, age, breed, and anesthesia protocols. Mortality: 0.73–2.05% for healthy rabbits, up to 7.37% for sick rabbits; GI complications up to 38%.
	\| ~~“Spaying~~ and ~~Neutering~~.” ''~~Wikipedia~~'', ~~last modified August 2025~~.		\| Pieper, E.G., Carter, J.E., Firestone, S.M., & Baron, H.R. “A review of perioperative mortality in pet rabbits in Australia.” ''Australian Veterinary Journal'' 103, no. 1–2 (2025): 3–12. https://doi.org/10.1111/avj.13391; Brodbelt, D.C., et al. “Risk factors for anaesthetic-related death in pet rabbits.” ''Veterinary Record'' 162, no. 12 (2008): 388–390; Lee, H.W., Machin, H., & Adami, C. “Peri‑anaesthetic mortality and gastrointestinal complications in pet rabbits: A retrospective study of 210 cases.” ''Veterinary Anaesthesia and Analgesia'' 45, no. 4 (2018): 520–528. https://doi.org/10.1016/j.vaa.2018.01.010
	\|-		\|-
	\| Mechanistic Insights on Sterility-Induced Tumorigenesis		\| Mechanistic Insights on Sterility-Induced Tumorigenesis

BCAdmin at 17:48, 16 August 2025

2025-08-16T17:48:27Z

Show changes

BCAdmin: /* References */

2025-08-16T17:41:40Z

References

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 == References ==
-<references />
+{| class="wikitable" style="width:100%; text-align:left;"
+|+ '''Key Peer-Reviewed Citations on Rabbit Cancer and Spay/Neuter Risks'''
 ==Summary Table of Evidence==

BCAdmin at 17:40, 16 August 2025

2025-08-16T17:40:12Z

Show changes

BCAdmin at 17:37, 16 August 2025

2025-08-16T17:37:14Z

← Older revision		Revision as of 17:37, 16 August 2025
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	https://journals.sagepub.com/doi/10.1177/0300985820973460		https://journals.sagepub.com/doi/10.1177/0300985820973460



			==Summary Table of Evidence==

			{\| class="wikitable"
			\|+ Summary of Evidence on Spay/Neuter Risks in Rabbits
			\|-
			! Theme
			! Key Insight
			\|-
			\| Immune Dysfunction
			\| Neutering reduces cancer-resisting T-cells, potentially increasing tumor risk.
			\|-
			\| Hormonal Cancer Pathways
			\| Prolactin and hormone disturbances may contribute to mammary tumor development.
			\|-
			\| Broader Health Impacts
			\| Gonad removal is linked to bone, endocrine, obesity, and other systemic issues.
			\|-
			\| Surgical Risks
			\| High perioperative mortality due to anesthesia complications and GI issues.
			\|-
			\| Sterility Mechanisms
			\| Hormone and germ cell changes post-sterilization may promote tumorigenesis in models.
			\|}

76.139.73.47: /* Prospective survey of neoplastic and non-neoplastic uterine disorders in 116 domestic rabbits (Oryctolagus cuniculus) */

2024-12-31T04:30:22Z

Prospective survey of neoplastic and non-neoplastic uterine disorders in 116 domestic rabbits (Oryctolagus cuniculus)

← Older revision		Revision as of 04:30, 31 December 2024
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	The findings in this study are concurrent with the logic from Martin Whitehead's policy on not spaying, as you'd have to spay 20 young rabbits to prevent 1 case of adenocarcinoma in an older doe. Given the risks from anesthesia, both on the table and post surgical anesthesia induced GI stasis, post operative abdominal adhesions. The risk to benefit ratio weighs much higher on risk to female rabbits being spayed.		The findings in this study are concurrent with the logic from Martin Whitehead's policy on not spaying, as you'd have to spay 20 young rabbits to prevent 1 case of adenocarcinoma in an older doe. Given the risks from anesthesia, both on the table and post surgical anesthesia induced GI stasis, post operative abdominal adhesions. The risk to benefit ratio weighs much higher on risk to female rabbits being spayed.

	===[https://pubmed.ncbi.nlm.nih.gov/33213301/ Neoplasia and Tumor-Like Lesions in Pet Rabbits ]~~===~~( Oryctolagus cuniculus): A Retrospective Analysis of Cases Between 1995 and 2019
			===Neoplasia and Tumor-Like Lesions in Pet Rabbits===
			[https://pubmed.ncbi.nlm.nih.gov/33213301/ Neoplasia and Tumor-Like Lesions in Pet Rabbits ]( Oryctolagus cuniculus): A Retrospective Analysis of Cases Between 1995 and 2019
	Christof A Bertram 1, Beate Bertram 1, Alexander Bartel 1, Anja Ewringmann 2, Marco A Fragoso-Garcia 1, Nancy A Erickson 1, Kerstin Müller 1, Robert Klopfleisch 1		Christof A Bertram 1, Beate Bertram 1, Alexander Bartel 1, Anja Ewringmann 2, Marco A Fragoso-Garcia 1, Nancy A Erickson 1, Kerstin Müller 1, Robert Klopfleisch 1
	Affiliations expand		Affiliations expand

76.139.73.47: /* Prospective survey of neoplastic and non-neoplastic uterine disorders in 116 domestic rabbits (Oryctolagus cuniculus) */

2024-12-31T04:29:55Z

Prospective survey of neoplastic and non-neoplastic uterine disorders in 116 domestic rabbits (Oryctolagus cuniculus)

← Older revision		Revision as of 04:29, 31 December 2024
Line 215:		Line 215:
	The findings in this study are concurrent with the logic from Martin Whitehead's policy on not spaying, as you'd have to spay 20 young rabbits to prevent 1 case of adenocarcinoma in an older doe. Given the risks from anesthesia, both on the table and post surgical anesthesia induced GI stasis, post operative abdominal adhesions. The risk to benefit ratio weighs much higher on risk to female rabbits being spayed.		The findings in this study are concurrent with the logic from Martin Whitehead's policy on not spaying, as you'd have to spay 20 young rabbits to prevent 1 case of adenocarcinoma in an older doe. Given the risks from anesthesia, both on the table and post surgical anesthesia induced GI stasis, post operative abdominal adhesions. The risk to benefit ratio weighs much higher on risk to female rabbits being spayed.

			===[https://pubmed.ncbi.nlm.nih.gov/33213301/ Neoplasia and Tumor-Like Lesions in Pet Rabbits ]===( Oryctolagus cuniculus): A Retrospective Analysis of Cases Between 1995 and 2019
	[https://pubmed.ncbi.nlm.nih.gov/33213301/ Neoplasia and Tumor-Like Lesions in Pet Rabbits ]( Oryctolagus cuniculus): A Retrospective Analysis of Cases Between 1995 and 2019
	Christof A Bertram 1, Beate Bertram 1, Alexander Bartel 1, Anja Ewringmann 2, Marco A Fragoso-Garcia 1, Nancy A Erickson 1, Kerstin Müller 1, Robert Klopfleisch 1		Christof A Bertram 1, Beate Bertram 1, Alexander Bartel 1, Anja Ewringmann 2, Marco A Fragoso-Garcia 1, Nancy A Erickson 1, Kerstin Müller 1, Robert Klopfleisch 1
	Affiliations expand		Affiliations expand