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PubMed1992

A long-term survey of morphine in cancer pain patients.

We surveyed 550 cancer patients who experienced pain and were treated with morphine for a total of 22,525 treatment days. Sufficient pain relief was achieved during more than 80% of this time using an average oral morphine dose of 82.4 mg--significantly lower than other studies. The use of this low dose, which was possible due to the concomitant administration of nonopioids and specific coanalgesics in most patients, resulted in a low incidence of side effects. Constipation and nausea/vomiting were the most common of these side effects. Physical dependence posed no practical problem in discontinuation of morphine treatment. Long-term opioid intake and development of tolerance did not appear to be linked; an increase in morphine dosage was most often explained by progression of the terminal disease. Addiction was a negligible problem, with only one observed case.

Analgesics↗

PubMed1991

[Perineal pain and rectal cancer--prevalence in local recurrence].

Between 1983 and 1989, 85 patients with either carcinoma of the rectum or a recurrence of a previously diagnosed rectal tumour (47 women and 38 men aged 20 to 87 years) were treated in our pain clinic. In 50 patients, the reason for referral was perineal pain which had been present for one week to two years (median six months, 25%-percentile six weeks, 75%-percentile six months). In some patients this was considered to be due to scar tissue formation by the referring doctors. The pain was classified somatic, visceral and neuropathic in approximately equal numbers of patients, and about half of them described more than one type of pain. The other 35 patients were suffering from pain at other sites. In 40 out of 50 patients with perineal pain, local tumour recurrence was diagnosed. In 29 patients, pain symptoms began with a median of 5.5 months before the tumour recurrence was diagnosed. In a further seven patients, other types of tumour dissemination in the pelvis were considered to be the cause of the perineal pain. In only three patients no evidence of tumour was found in the pelvis. A non-neoplastic cause of perineal pain could be definitely confirmed in only one patient on post-mortem examination. 35 patients reported no perineal pain on admission, although in 19 cases a local cancer recurrence was found. 13 of these patients suffered from pain in the area of sensory innervation of the lumbosacral plexus. From 16 patients without a diagnosis of local recurrence, only four reported pain in this area.(ABSTRACT TRUNCATED AT 250 WORDS)

Adult↗