Histological Appearance of Tumors

1957 ◽  
Vol 28 (3) ◽  
pp. 309.3-310
Author(s):  
Lauren V. Ackerman
Keyword(s):  
Histological Appearance

scholarly journals Experiments on the kidneys of the frog. (Preliminary communication.)

1913 ◽  
Vol 86 (588) ◽  
pp. 355-364 ◽  
Keyword(s):  
Renal Arteries ◽  
Capillary Network ◽  
The Other ◽  
Renal Tubules ◽  
Complete Occlusion ◽  
Other Hand ◽  
Histological Appearance ◽  
Preliminary Communication ◽  
Portal Veins ◽  
The One

As is well known, the glomeruli of the frog’s kidney are supplied with blood only by the renal arteries, whereas the renal tubules have a double supply. On the one hand, they receive blood by way of the renal portal veins; on the other hand, the efferent vessels from the glomeruli open into the capillary network round the tubules. The whole of the tubule receives blood from each of these two sources, so that the capillary network around the tubules can be fully injected either from the renal arteries or from the renal portal veins. Taking advantage of this fact it has been shown by Beddard and one of us (F. A. B.) that after complete occlusion of the glomeruli the tubules, when adequately supplied with oxygen, maintain their normal histological appearance, and may secrete urine. In the present experiments an attempt has been made to determine the function of the glomerulus and to ascertain whether the tubules possess the capacity to absorb water and solids.

Localized Hypertrophic Mononeuropathy Involving the Tibial Nerve

Neurosurgery ◽  
1988 ◽  
Vol 23 (2) ◽  
pp. 218-221 ◽  
Author(s):  
Vasudeva G. Iyer ◽  
Henry D. Garreston ◽  
Ryland P. Byrd ◽  
Steven J. Reiss
Keyword(s):  
Differential Diagnosis ◽  
Tibial Nerve ◽  
Posterior Tibial Nerve ◽  
Motor Weakness ◽  
Posterior Tibial ◽  
Bulb Formation ◽  
Histological Appearance ◽  
Single Nerve ◽  
Onion Bulb Formation ◽  
Localized Hypertrophic Neuropathy

ABSTRACT Localized hypertrophic neuropathy (LHN) is a disorder of unknown cause that presents with progressive, predominantly motor weakness in the distribution of a single nerve, with the histological appearance of the “onion bulb” formation. Because of its rarity, the condition is often ignored in the differential diagnosis of mononeuropathy. We report a case of LHN involving the posterior tibial nerve and review the literature.

scholarly journals Renal angiomyoadenomatous tumour: Imaging features

2013 ◽  
Vol 6 (4) ◽  
pp. 140 ◽  
Author(s):  
V. Anik Sahni ◽  
Michelle S. Hirsch ◽  
Stuart G. Silverman
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Imaging Features ◽  
Renal Neoplasms ◽  
Tumour Imaging ◽  
Resonance Imaging ◽  
Imaging Appearance ◽  
Histological Appearance

Renal angiomyoadenomatous tumour is a rare, recently describedneoplasm with a distinctive histological appearance. Althoughreported in the pathology literature, to our knowledge, no priorreports have described its imaging appearance. We describe thecomputed tomography and magnetic resonance imaging featuresof an incidentally detected renal angiomyoadenomatous tumourthat appeared as a well-marginated, solid T2-hypointense enhancing mass, in a 50-year-old woman. It is indistinguishable from a variety of benign and malignant renal neoplasms.

Evaluation of the central canal of the spinal cord in experimentally induced hydrocephalus

1978 ◽  
Vol 48 (6) ◽  
pp. 970-974 ◽  
Author(s):  
A. Everette James ◽  
William J. Flor ◽  
Gary R. Novak ◽  
Ernst-Peter Strecker ◽  
Barry Burns
Keyword(s):  
Spinal Cord ◽  
Cerebrospinal Fluid ◽  
Experimental Model ◽  
Alternative Pathway ◽  
Central Canal ◽  
Communicating Hydrocephalus ◽  
Csf Flow ◽  
Content Type ◽  
Histological Appearance ◽  
Fine Print

✓ The central canal of the spinal cord has been proposed as a significant compensatory alternative pathway of cerebrospinal fluid (CSF) flow in hydrocephalus. Ten dogs were made hydrocephalic by a relatively atraumatic experimental model that simulates the human circumstance of chronic communicating hydrocephalus. The central canal was studied by histopathology and compared with 10 normal control dogs. In both groups the central canal of the spinal cord was normal in size, configuration, and histological appearance. In this experimental model dilatation of the canal and increased movement of CSF does not appear to be a compensatory alternative pathway.

Extraosseous manifestation of Gaucher's disease type I: MR and histological appearance

2000 ◽  
Vol 10 (10) ◽  
pp. 1660-1663 ◽  
Author(s):  
L. W. Poll ◽  
J.-A. Koch ◽  
S. vom Dahl ◽  
E. Loxtermann ◽  
M. Sarbia ◽  
...  
Keyword(s):  
Disease Type ◽  
Type I ◽  
Gaucher's Disease ◽  
Gaucher’S Disease ◽  
Histological Appearance

Role of prostaglandins in amphibian limb regeneration

1981 ◽  
Vol 59 (1) ◽  
pp. 136-137
Author(s):  
Steven R. Scadding
Keyword(s):  
Wound Healing ◽  
Acetylsalicylic Acid ◽  
Limb Regeneration ◽  
Limb Amputation ◽  
Prostaglandin E ◽  
Notophthalmus Viridescens ◽  
Bufo Americanus ◽  
Histological Appearance

Following limb amputation in the newt (Notophthalmus viridescens), the animals were given daily intraperitoneal injections of 0.1 or 1.0 mg of either indomethacin or acetylsalicylic acid. This had no observable influence on the rate or extent of limb regeneration or the histological appearance of the regenerating limb when compared with controls. Following limb amputation in toads (Bufo americanus), the limb stumps were injected daily for the first 15 days after amputation with 5 μg of either prostaglandin E1 or prostaglandin E2. Neither of these treatments had any observed effect on subsequent wound healing of the limbs when compared with controls. These observations suggest that prostaglandins do not play a major role in control of amphibian limb regeneration.

Memoirs: The Muscles of the Adult Honey-bee (Apis mellifera L.)

1928 ◽  
Vol s2-71 (284) ◽  
pp. 563-651
Author(s):  
GUY D. MORISON
Keyword(s):  
Apis Mellifera ◽  
Alimentary Canal ◽  
Muscular Activity ◽  
Reproductive Organs ◽  
Muscle Fibres ◽  
Muscle Attachment ◽  
Apparent Lack ◽  
Histological Appearance ◽  
The Individual ◽  
Alary Muscles

1. The entire musculature of the alimentary canal is described in gross and in histological detail. The development of the muscle is considered. The innervation is described, likewise the tracheation and its relation to muscular activity and the bloodstream. 2. The heart is described with a detailed histological account of its muscle-fibres. Its tracheation is described and its apparent lack of innervation is discussed. 3. The ‘alary’ muscles of the dorsal diaphragm are described with a detailed account of their histology, innervation, and tracheation. 4. The ventral diaphragm is described as well as the histology, innervation, and tracheation of its muscle-fibres. The course of blood and physiological questions connected with it receive discussion. 5. The muscles of the reproductive organs of drone, queen, and worker are described with particular reference to the histology, innervation, tracheation, and physiology of their fibres. 6. The indirect muscles of the wings (fibrous muscle) have their histology, innervation, and tracheation described in detail. The method of contraction of the entire muscles and of the individual fibres and fibrils is discussed. The sarcosomes are described with their physiological significance to contraction. 7. The attachment of all the types of muscle found in the bee is described in histological detail. Different opinions of muscle attachment to chitin are summarized. 8. Throughout the paper, histological measurements are given for the various types of muscle-fibres and their nuclei in the three castes of bee. Since in the three castes the histological appearance is so similar for each type of muscle, the illustrations have been limited to portions of the muscles of worker bees.

The synthetic activity of primordial germ cells in normal and irradiated neonatal male rats

Development ◽  
1968 ◽  
Vol 19 (2) ◽  
pp. 239-249
Author(s):  
I. C. Lett
Keyword(s):  
Germ Cells ◽  
Primordial Germ Cells ◽  
Giant Cells ◽  
Male Rats ◽  
Synthetic Activity ◽  
X Rays ◽  
Short Term ◽  
Post Irradiation ◽  
Histological Appearance ◽  
Transitional Cells

Resting primordial germ cells or gonocytes, present in the testis of the rat at birth (Beaumont & Mandl, 1963), are highly radiosensitive. A dose of 50–100 r X-rays induces complete, or almost complete, sterility, as judged by the histological appearance of the testis at 25 days post parturn (Mandl et al. 1964). Studies of short-term post-irradiation changes have revealed that gonocytes, exposed to a sterilizing dose of X-rays at birth, do not degenerate immediately after exposure but differentiate normally into transitional cells (the immediate precursors of definitive germ cells; Beaumont & Mandl, 1963; Huckins, 1963; Franchi & Mandl, 1964) so that no histological abnormalities are detectable for 5 or 6 days. Subsequently, however, the irradiated transitional cells fail to divide; they increase markedly in size and form irregularly shaped giant cells which eventually become pyknotic (Franchi & Mandl, 1966; see also Sapsford, 1965a).

A PROSPECTIVE HISTOPATHOLOGICAL STUDY OF MENINGIOMAS IN A TERTIARY CARE CENTRE OF VIJAYAWADA

2021 ◽  
pp. 11-13
Author(s):  
C.Bhanu Sree ◽  
P. Annapurna ◽  
M. Rajani
Keyword(s):  
Surgical Resection ◽  
Tertiary Care ◽  
Histopathological Study ◽  
Age Group ◽  
Care Centre ◽  
Tertiary Care Centre ◽  
Medical College ◽  
Histological Appearance ◽  
Classi Cation ◽  
A Prospective Study

Background: Meningiomas are neoplasms arising from the arachnoidal cap cells in the meningeal coverings of the spinal cord and brain. These are the most common benign intracranial tumours and account for about 13-26% of all primary brain neoplasms. These are generally benign neoplasms of adults most often seen in middle age, but about 10% are atypical or malignant. These neoplasms are graded by WHO as Grade I , II and III . Benign meningiomas can be cured by surgical resection where as higher grade meningiomas require radiotherapy after surgical resection as these higher grade meningiomas have greater recurrence and aggressive behavior. Aims and Objectives: To study the variants and histopathological spectrum of meningioma and prognosis of variants. Material & Methods: The present study is a prospective study conducted in the department of Pathology, Siddhartha medical college from June 2019-May 2020. During this study, 16 cases of meningiomas were diagnosed and reviewed. Result:In our study of 16 cases females were 62.5%. The most common age group is 41-60 yrs (68.75%). Most common variant was noted to be transitional meningioma followed by meningothelial meningioma. Out of the 16 cases, grade I were 81.25%. Conclusion: Meningiomas account for 28-30% of primary central nervous system tumors and unveil a heterogeneous histopathology. The histological appearance of meningioma determines the grading for the management of the various subtypes and also associated with patient's prognosis. Hence a continuous revision of histopathological classication systems is required to improve the diagnostic accuracy. Benign meningiomas are the most common type. From our study, we conclude that transitional meningioma is the most common benign variant.

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