The Anatomy of the Meninges.
نویسنده
چکیده
A note may be added here as to certain findings not usually recorded in "official" descriptions of examinations of the cerebro-spinal fluid. In the centrifugalised deposits of lumbarpuncture specimens, I have not infrequently encountered squamous cells from the skin-surface, together with their accompanying staphylococci, etc., and occasionally even a little cylindrical fragment of skin punched out by the exploring needle-an argument in favour (i) of the thorough preliminary sterilisation of the skin, e.g. with I in 500 biniodide spirit, and not a mere rapid and perfunctory "dab" with spirit or ether, or even tincture of iodine: and (2) of rejecting the first few drops of fluid flowing from the needle, as these usually also contain contaminating red blood-corpuscles. On one occasion several years ago, whilst examining a specimen of fluid, I was puzzled to find, in the preliminary fresh-wet films from the centrifugalised deposit, certain "unusual" cells, until, in toluidin-blue and Leishman-stained films, I recognised them as myelocytes, accompanied by nucleated red corpuscles from the bone-marrow, due evidently to the over-enthusiastic penetration of one of the vertebral bodies (Fig. 6A). In a similar "over-energetic" specimen I once found a bone-corpuscle along with myelocytes and erythroblasts (Fig. 6B); and, as a complementary experimental investigation, at my next autopsy, I passed a lumbar-puncture needle, attached to a syringe, through the fourth lumbar interspace, pushing it well forward (!) into the intervertebral disc, and then slowly withdrawing it under negative pressure, collecting some cerebro-spinal fluid on its backward journeywith the interesting result of finding several little groups of cartilage-cells in the centrifugalised deposit of the specimen so obtained (Fig. 6c).
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عنوان ژورنال:
- Postgraduate medical journal
دوره 20 220 شماره
صفحات -
تاریخ انتشار 1944