The intramural segment and the uterotubal junction: an anatomic and histologic study

Rocca, M.; Habashy, Maha El; Nayel, Sayed A.; Madwar, Amira Y

doi:10.1016/0020-7292(89)90606-1

Cited by 8 publications

(5 citation statements)

References 6 publications

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“…A previous study reported an endosalpinx without mucosal folds, but this observation may be because of the limitations in histological techniques [19]. Similar to the results of the present study, a previous study describing the shape of the mucosa of the uterine segment showed the mucosa folded toward its base as tongue-like processes [20]. These folds form crypts at the beginning of the lumen and are easily observed in 3D reconstructions.…”

Section: Discussionsupporting

confidence: 81%

The human endosalpinx: anatomical three-dimensional study and reconstruction using confocal microtomography

Castro¹,

Aranda²,

Matos

et al. 2019

Pol J Radiol

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Purpose To evaluate in three dimensions (3D) the human endosalpinx and reconstruct its surface along its different anatomical segments, without the injection or insertion of luminal contrasts, using confocal microtomography (micro-CT). Material and methods 15 fallopian tubes (FT) from 14 women in reproductive age from procedures for benign disease or sterilization were selected. The specimens were fixed in formalin and stained with Lugol solution. Micro-CT studies were conducted on the specimens using protocols adapted from biological studies, to acquire images to reconstruct in 3D the endosalpinx surface. Results From these specimens, 6 presented the intra-mural segment, 14 presented the isthmus and 15 presented the ampulla and fimbria segment of the FT. The specimen presented tissue definition, and contrast sufficient for FT endosalpinx morphological analysis and lumen definition. The intramural portion presented initially a mucosal projection toward the lumen, bending on its own axis, and increased numbers of projections towards the isthmic portion, where the projections become longer more numerous. The endosalpinx becomes more tortuous, the lumen diameter increases and the mucosal projections become more bulky in the ampullary portion, with the projections less present on the antimesenteric side. The infundibular portion is marked with the organized and predictable endosalpinx, the abdominal ostium is cleared demonstrated, with the reduction of the endosalpinx volume. The fimbria demonstrated a small relation between fringes and intratubal endosalpinx. Conclusions Microscopic anatomy of different segments of the human FT mucosa can be analyzed and reconstructed in 3D with histological correlation using micro-CT.

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Section: Discussionsupporting

confidence: 81%

The human endosalpinx: anatomical three-dimensional study and reconstruction using confocal microtomography

Castro¹,

Aranda²,

Matos

et al. 2019

Pol J Radiol

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“…A transitional area is also apparent in humans. Here the simple cuboidal epithelium present in the vicinity of the uterine ostium changes to the simple columnar epithelium of the endometrium together with the appearance of uterine glands (Rocca et al, ). Similarly, uterine glands make their appearance in the transition zone in the bovine (Wrobel et al, ).…”

Section: Discussionmentioning

confidence: 99%

“…In the human (Rocca et al, 1989), bovine (Wrobel et al, 1993), rat, sheep, and rabbit (Hook and Hafez, 1968) the Tunica muscularis of the intramural part of the isthmus displays an additional inner longitudinal muscle layer. This layer is absent in the cheetah similar to the situation in the pig, dog (Hook and Hafez, 1968), and cat (Hafez and Black, 1969b;Bansal and Varinder, 2008).…”

Section: Microscopy Of the Isthmusmentioning

confidence: 99%

Morphology of the Uterotubal Junction of the Cheetah (Acinonyx jubatus)

Penfold

Soley

Hartman

2019

The Anatomical Record

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Less than 7,000 cheetahs survive in the wild. Captive breeding has proved notoriously difficult. The uterotubal junction acts as major barrier and regulator to the passage of sperm. This study describes the morphology of the uterotubal junction of the cheetah. Reproductive tracts were obtained from seven cheetahs that succumbed from natural causes or were euthanized for humane reasons. The uterotubal junction was isolated and examined macroscopically and microscopically. The extramural isthmus made a characteristic 90° bend before entering the mesometrial border of the uterus close to its tip. The intramural isthmus had approximately four primary folds lined by nonciliated cuboidal to low cuboidal epithelium. The Tunica muscularis was robust, merged with its uterine counterparts and consisted of an inner circular layer and outer longitudinal smooth muscle layer. The uterine ostium opened via a muscular and glandular papilla that projected from the apex of the uterine lumen. A sharply demarcated circular zone of simple columnar epithelial cells surrounded the uterine ostium and separated the simple cuboidal to low cuboidal cells of the isthmus and uterine epithelium from each other. Branched tubulo‐alveolar glands, some with dilated lumens, were present in the papilla and sometimes extended into the adjacent endometrium. These glands might act as sperm storage areas, and could easily be confused with cystic endometrial hyperplasia. Low transverse endometrial ridges surrounded the papilla and extended caudally for a short distance before disappearing. The uterine glands were lined by a simple cuboidal epithelium. Anat Rec, 302:1855–1864, 2019. © 2019 American Association for Anatomy

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“…The uterine tube has a distance between the lumen mucosal surface and the serosal surface of only a few millimetres, and the uterine tube is known to be convoluted in nature. [1][2][3] To transverse this space for a distance of 2 cm by the Essure device without serosal perforation would be extraordinarily difficult as the length of the intramural portion of the fallopian tube is between 9 and 17 mm. 3 2 The laparoscopic finding demonstrated no outline of the device in the tube, and indeed even with palpation of the uterine tube, no device was seen or felt.…”

mentioning

confidence: 99%

“…[1][2][3] To transverse this space for a distance of 2 cm by the Essure device without serosal perforation would be extraordinarily difficult as the length of the intramural portion of the fallopian tube is between 9 and 17 mm. 3 2 The laparoscopic finding demonstrated no outline of the device in the tube, and indeed even with palpation of the uterine tube, no device was seen or felt. We would expect that if a perforation occurred between the mucosal surface and serosa with such a small distance between the two that an outline of the device would be seen and felt, hence it was more likely intratubal.…”

mentioning

confidence: 99%