An extracellular ceroid-type (ECC) lipopigment which appears histologically as wavy hyaline membranes or, less frequently, as an amorphous solid or broadly reticulated mass is described. Its ultrastructure is either amorphous or membranous and consists either of simple linear membrane-like
A case is described of cerebrotendinous xanthomatosis with purely neurological manifestations. Cholestanol deposition in both affected and unaffected brain regions was markedly increased, reaching 18.5-20.8% of the sterol fraction. The unilateral lesions localized in the basal ganglia and cerebellar
To test whether the possibly enhanced sensitivity of aged cells to oxidative stress may depend on their content of ceroid/lipofuscin, AG-1518 human fibroblasts with various amounts of the pigment accumulated due to prolonged cultivation under normobaric hyperoxia were exposed to acute oxidative
A sequential morphological study of ovine ceroid-lipofuscinosis showed that brains of affected lambs were normal at birth, grew until four months of age but then atrophied. Laminar necrosis of cerebral cortex was noted at 10 weeks, occurring first in the parietal area, then spreading to involve
Apoptosis is a highly organized, energy-dependent program by which multicellular organisms eliminate damaged, superfluous, and potentially harmful cells. Although caspases are the most prominent group of proteases involved in the apoptotic process, the role of lysosomes has only recently been
Membranous fat necrosis (MFN) is a degenerative process involving mature systemic adipose tissue. It is characterised by the presence of membranocystic foci surrounded by a lipophagic fibro-inflammatory reaction typical of fat necrosis. Membranocystic foci are cysts lined by an eosinophilic membrane
Two patients presented with nodular lesions on their lower limbs. Histologically, the dermis, in one case, and the panniculus, in the other, displayed pseudocystic lesions delimited by a serpiginous membranous structure showing the staining characteristics of ceroid. One patient had sclerosing
We report the case of a 66-year-old man with nodular lesions on the chest that were clinically diagnosed as epidermal cysts. Histologically the lesions consisted of fat necrosis with cystic spaces lined by striking membranous structures, mimicking a parasitic cuticle and exhibiting all the staining
We identified and documented the occurrence of membranous fat necrosis (MFN) in 217 mature cystic teratomas (MCTs) of the ovary. Cysts lined by an eosinophilic and scalloped membrane with pseudopapillary infoldings, the characteristic histologic features of MFN, were identified in 9 tumors. The
Steatitis and fat necrosis were identified in a group of 123 American alligators (Alligator mississippiensis) kept in an enclosed pond and fed a diet of only fish for more than 10 years. All affected animals were outwardly healthy and had had no signs of disease in the period immediately before
Membranous fat necrosis (MFN) a distinct degenerative process of adipose tissue, is characterised by the presence of membranocystic lesions (MCLs) superimposed on a background of typical traumatic-type fat necrosis. MCLs are cysts, of varying size and shape, that are lined by an eosinophilic,
Membranous fat necrosis (MFN) is an under-recognized variant of fat necrosis (FN) that is characterized by the presence of membranocystic foci in which cysts are lined by an eosinophilic, homogeneous membrane with pseudo-papillary luminal projections. Although MFN has been described in systemic
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