pseudoglandular

pseudoglandular

a stage in the growth of the embryonic lung before ciliated cells are differentiated.
References in periodicals archive ?
Pseudoglandular (adenoid, acantholytic) penile squamous cell carcinoma: A clinicopathologic and outcome study of 7 patients.
a) Stage of pregnancy GD Trimester Macaque Human First [less than or [less than or equal to] 55 equal to] 90 Second 55-110 90-180 Third 110-165 180-270 Stage of lung development Lung stage GD Macaque Human Embryonic 21-55 Pseudoglandular 56-80 42-112 Canalicular 80-130 112-168 Saccular 131-165 168-270 GD, gestation day.
The baby will then progress into the Fetal period that includes lung tissue development in the Pseudoglandular Stage from six weeks to 16 weeks, the Canalicular stage from 16 weeks to 26 weeks, and the Terminal saccular stage from 26 weeks to the infant's birth at 38 to 40 weeks of normal gestation.
Areas of abundant hemosiderin pigment and cleft-like pseudoglandular spaces were seen (figure 2).
A pseudoglandular arrangement of the hepatocytes occurred.
Most of the SH-HCC cases were moderately differentiated and showed trabecular and pseudoglandular patterns.
Focal pseudoglandular formation was evident, set in a myxoid and sclerotic stroma.
After early embryonic development, stages in prenatal lung development are pseudoglandular, canalicular, saccular, and alveolar, which are represented in Figure 2, along with associated developmental features (Kajekar 2007).
HAS was identified as an adenocarcinoma exhibiting solid/trabecular, pseudoglandular growth pattern with large polygonal eosinophilic cells and staining positively with polyclonal rabbit anti-human a1-fetoprotein and monoclonal mouse anti-human hepatocyte (DAKO, Glostrup, Denmark).
Obvious from Figure 5 is the fact that although remarkable structural changes occur during the embryonic development such as pseudoglandular, canalicular, and saccular stages of prenatal development, changes to the lungs continue into the postnatal developmental period.
The pseudoglandular spaces are likely caused by degenerative changes, necrosis, or artifacts and should not be considered evidence of glandular differentiation.