1/31. Morphology of Bertiella studeri (Blanchard, 1891) sensu Stunkard (1940) (cestoda: Anoplocephalidae) of human origin and a proposal of criteria for the specific diagnosis of bertiellosis. Human material of an African specimen of Bertiella studeri (Blanchard, 1891), a typical intestinal cestode of monkeys, is described. Mature, postmature and gravid proglottides, and eggs, previously inadequately figured, are illustrated and photographed. The description of the species agrees with that provided by Stunkard (1940). A comparative study with other descriptions of the species is made in an attempt to clarify previous findings. The morphological differences reported in various earlier descriptions of the species suggest that B. studeri should be regarded as a "B. studeri species complex" Improvements are required in the descriptions of new future findings in order to clarify the specific diagnosis of human bertiellosis. Evidence suggests that a generalised diagnosis exclusively based on egg size and geographical distribution is insufficient to differentiate B. studeiri and Bertiella mucronata (Meyner, 1895), or additional species may be affecting humans. ( info) |
2/31. infection by Dipylidium caninum in an infant. Dipylidium caninum, the dog tapeworm, is a cosmopolitan parasite of dogs and cats and occasionally causes human infection in the united states. diagnosis is made by observing the characteristic rice grain-like proglottids in stool specimens and the pathognomonic egg packets in the gravid uterus in histologic sections of the parasite. There have been few reported cases of human infection with this parasite, and very little information on the pathology of this zoonotic disease is available in the English language. This report of a case of D caninum infection in a 6-month-old infant highlights the diagnostic features of this disease. To our knowledge, this is the first case to be reported in the American pathology literature during the last 36 years (medline database, 1966-2002). ( info) |
3/31. Lethal invasive cestodiasis in immunosuppressed patients. Using both traditional methods and broad-range 18S ribosomal dna (rDNA) polymerase chain reaction, we examined 2 cases of lethal cestodiasis, in which the disease agent had been poorly identified or misidentified. In one case, involving a patient with AIDS, we identified the human dwarf tapeworm, hymenolepis nana, as a cause of aberrant metastatic larval disease. In the second case with similar pathologic abnormalities, involving a patient with hodgkin disease, we identified a larval cestode with a previously uncharacterized 18S rDNA sequence. A prior report of this case nearly 30 years ago, based on tissue examination, had suggested that the parasite was a sparganum. ( info) |
| The twenty-seventh documented case of human mesocestoides infection, which corresponds to the seventh documented case in the united states, is reported. The case had its origin in Alexandria, louisiana in the summer of 1998. The patient was a 19-month-old boy. The strobila consisted of 35 proglottids that included mature as well as gravid segments containing a ventral genital pore and a parauterine organ. After a detailed microscopic examination, the tapeworm was identified as belonging to the genus mesocestoides. mesocestoides variabilis is the probable species responsible for the infection, since the six cases previously reported in the united states were identified as this species. After the treatment with a single dose of praziquantel (10 mg/kg), the tapeworm segments were no longer detectable in the child's feces. A food-borne origin of this infection derived from culinary customs of the Acadian and Creole communities in louisiana is proposed. ( info) |
5/31. Human bertiellosis in Goias, brazil: a case report on human infection by Bertiella sp. (cestoda: Anoplocephalidae). The authors report on a new case of human Bertiellosis in a 2-year old female patient who was born in Goiania-Goias (brazil) and has had history of permanent dwelling in an area frequently visited by simians in Mato Grosso (brazil). At the time of diagnosis the patient showed inappetence, abdominal pain, and loss of weight. eggs and proglottids were found in her stool and were identified as Bertiella sp. The objective of this report is to register the third case of human Bertiellosis in brazil, characterizing one more case of helminthic zoonosis. ( info) |
6/31. The first human infection with Bertiella studeri in vietnam. This is the first case report of Bertiella studeri infection in vietnam. The patient was a 4 year old boy in Cai Lay district of Tien Giang Province, noting some proglottids in his feces. The time and mode of infection were unknown, but anorexia, weight loss, and intermittent diarrhea were noted. niclosamide (Yomesan) 1 gram was prescribed, and then albendazole (Zentel) 400mg daily for 3 days. Proglottids were found in the feces three months after the first treatment, and 1 month after the second course. ( info) |
7/31. Dipylidium caninum in an infant. The tapeworm, Dipylidium caninum, occurs worldwide in dogs and cats. It may occur rarely in children, when the infection may be unrecognised or misdiagnosed. We report such a case. ( info) |
8/31. Human Bertiella studeri (family Anoplocephalidae) infection of probable Southeast Asian origin in Mauritian children and an adult. Morphologic studies on preserved and recently collected Bertiella specimens obtained from Mauritian children and an adult indicate that human infection is caused by Bertiella studeri instead of B. mucronata. This cestode might have been accidentally introduced onto the island of mauritius from the Southeast asia along with monkeys in the 17th century. We present information that will help identify B. studeri and provide a correct diagnosis. The case reports indicate gastrointestinal disturbances in human bertiellosis. Human infection with Bertiella studeri is reported for the first time in a Mauritian adult. ( info) |
9/31. Case report: human brain abscess due to a tetra-acetabulate plerocercoid metacestode (Cyclophyllidea). A 38-year-old man living near Phnom Penh (cambodia) was admitted to a hospital in paris in June 2001 for a single episode of a generalized grand mal seizure. This episode was preceded by a 9-month history of headaches. magnetic resonance imaging (MRI) of the head revealed a rounded lesion immediately ahead of the left central sulcus. The resected lesion was about 20 mm in diameter. Histologic examination revealed an elongated but unsegmented metacestode at the center of the lesion. polymerase chain reaction (PCR) analysis was inconclusive due to formalin-based histologic processing of the tissue. Morphologic analysis based on the histologic sections revealed that the metacestode was a tetra-acetabulate plerocercoid of the order Cyclophyllidea, with a distinct rostellum and pseudosegmentation of the dorsoventrally flattened hindbody. This is the first report of a tetra-acetabulate plerocercoid from a human host and the first report of any cyclophyllidean plerocercoid from the human brain. After 6 weeks, the patient was asymptomatic, neurologic examination was normal, and the brain MRI showed only surgical cavitation. The patient returned to cambodia. ( info) |
| The second case of human infection with mesocestoides lineatus in korea was reported. The patient, a farm worker, complained of abdominal pain and massive discharge of sesame-like proglottids in his stool for several months. Worms, recovered by chemotherapy with niclosamide, consisted of 32 strobilae. This may be the heaviest worm burden in human infection ever reported. The infected man habitually ate the raw viscera of chickens. ( info) |