Morphology of Pancreatic Tissue-containing Accessory Spleen in an APA Hamster

Isegawa, Naohisa; Doi, Kunio; Yamamoto, Tomoka; Kataoka, Motoyuki; Mizutani, Takeo

doi:10.1538/expanim1978.33.2_217

Cited by 3 publications

(4 citation statements)

References 3 publications

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“…The frequency of occurrence of AS was not related to body size or level of inbreeding but increased consistently with age [5]. The average size of AS in the Chinese hamster was 0.7 mm 1.5 mm, and similar to that observed in the golden hamster [11], in which some large sized (2 mm 2 mm) and some small sized organs(less than 1 mm1 mm) were also observed. AS in the rabbit [5] is usually 1~3 mm in size, but it was about 0.75 cm in the sow [10].…”

Section: Discussionsupporting

confidence: 68%

“…In the present report, however, evidence of AS structure is provided in the Chinese hamster. With regard to the incidence of AS, it is reported that approximately 23.8% of Chinese hamsters, 10% of humans [1], 27% of golden hamsters [11], 8.9% of rabbits [5], and 51% of New Hampshires pigs [10] have ASs.…”

Section: Discussionmentioning

confidence: 99%

“…It has been estimated that more than 98% of ASs occur near the spleen. ASs of the Chinese and the golden hamsters [11] are embedded in the adipose tissues near the tail of the pancreas. AS was observed cranial, adjacent and caudal to the spleen in the chicken [7], and on the tail of the pancreas in the capuchin monkey [9].…”

Section: Discussionmentioning

confidence: 99%

“…There have been many reports on the incidence and histology of the accessory spleen (AS) in humans [1][2][3][4], rabbits [5,6], chickens [7], mice [8], apes [9] and pigs [10], but these are rarely found in the Chinese hamster. Although Isegawa et al [11] have observed AS in the golden hamster(APA), the morphological structures were not described.…”

Section: Introductionmentioning

confidence: 99%

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Morphological structure of accessory spleen in Chinese hamsters

Yoon

Shin²,

Park³

et al. 2000

J Vet Sci

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To attempt a rigorous definition of the structure of the accessory spleen (AS) in the Chinese hamster, we examined twenty-one animals, and found AS in 5 animals (23.8%), which were over 7-month-old. The AS had no connection with the main spleen and was seen as a dark red oval organ (0.7 mm 1.5 mm), which was embedded in the adipose tissue near the tail of the pancreas. It was demarcated from the adipose tissue and some pancreatic tissue. The organ was encapsulated by thin collagenous connective tissue and smooth muscle fibers, and contained lymphatic nodules, reticular fibers, nodular central arterioles, macrophages and megakaryocytes. Notably the incidence of AS appeared to increase with age in the Chinese hamsters.

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Section: Discussionsupporting

confidence: 68%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Morphological structure of accessory spleen in Chinese hamsters

Yoon

Shin²,

Park³

et al. 2000

J Vet Sci

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Accessory spleen in a dog: Macroscopic and microscopic findings

Nazem¹,

Sajjadian²,

Kheirandish³

et al. 2021

BJVM

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Accessory spleens are one or more areas of normal ectopic splenic tissue of variable size supplied by the branches of the splenic artery. A 7 year-old mixed breed male dog was fixed for use as a model in anatomy hall. During the abdominal dissection, the gross examination showed a 6.3×3.1×1 cm mass that was situated on the caudodorsal border of the spleen. Its appearance and firm consistency were similar to those of spleen. There was no connection between the spleen and this mass. It was supplied by accessory splenic artery. Microscopic examination of the mass revealed some structures similar to spleen.

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