Equinococosis quística músculo-esquelética primaria de evolución crónica / Primary musculo-skeletal echinococcosis of chronic evolution

Resumen La equinococosis quística es una zoonosis parasitaria crónica de alta prevalencia en Chile. Se presenta el caso clínico de un varón de 66 años, proveniente de la Región del Maule, con una equinococosis quística músculo-esquelética. Consultó por dolor, aumento de volumen y una fístula en muslo izquierdo, con salida de líquido cristalino. En el estudio imagenológico se identificaron múltiples lesiones quísticas en el ala sacra, hueso ilíaco y tejidos blandos de zona inguinal y muslo izquierdo. La serología Elisa IgG para Equinococcus granulosus fue positiva. Se realizó la resección quirúrgica de las lesiones musculares y se inició terapia antiparasitaria combinada con albendazol y praziquantel, con buena respuesta clínica; sin embargo, al suspender la terapia, por iniciativa del paciente, se reiniciaron los síntomas.

Cystic echinococcosis is a chronic parasitic zoonosis of high prevalence in Chile. We report a clinical case of a 66-year-old man, domiciled in an urban area of the Maule Region, who presents skeletal muscle cystic echinococcosis. Consultation for pain, volume increase and left thigh fistula that gives out crystalline fluid. In the study with imaging techniques, multiple cystic lesions are identified in the sacral wing, iliac bone, soft tissues of the groin and left thigh. No cysts were evident in other organs. Serology Elisa IgG was positive Echinococcus granulosus. Surgical resection of soft tissue injuries. Combined antiparasitic therapy with albendazole and praziquantel was started, with good clinical response. Upon discontinuation of antiparasitic therapy at the initiative of the patient, symptoms are reinitiated.

Muscular cysticercosis: Case report and imaging findings / Cisticercose muscular: relato de caso e aspectos de imagem

Summary Cysticercosis is a parasitic disease caused by a worm of the Cestoda class. The most prevalent form affects the nervous system. This case report is from a 78-year-old female patient evaluated at Clínica Mult Imagem, in the city of Santos, Brazil, who presented a form of the disease that differed from the classic neurocysticercosis, in this case muscular cysticercosis. This and other forms of manifestation justify further studies to ensure adequate recognition, diagnosis and treatment of this parasitic disease.

Resumo A cisticercose é uma parasitose causada pela classe Cestoda. A forma mais prevalente acomete o sistema nervoso. Este relato de caso, obtido da Clínica Mult Imagem, em Santos, é de uma paciente do sexo feminino de 78 anos que apresentou uma forma diversa de neurocisticercose, a muscular. Outras formas de manifestação da doença, como a apresentada neste relato, justificam a realização de mais estudos para assegurar o reconhecimento, o diagnóstico e o tratamento adequados dessa parasitose.

Hydatid cysts in muscles: clinical manifestations, diagnosis, and management of this atypical presentation

ABSTRACTINTRODUCTION: Hydatid cysts are rarely detected in muscle tissue (0.7-0.9%), even in endemic countries. The aim of this study was to present information regarding the clinical manifestations, diagnosis, and management of muscle echinococcosis.METHODS: Twenty-two patients with hydatid cysts in the muscle were followed from January 2006 through December 2014.RESULTS: Twenty-four sites of muscle involvement were observed in the 22 patients. Fifteen (68%) of our patients were women, while seven (32%) were men. The mean age was 28.1 ± 15.4 (6-61) years. The most frequent locations were the thigh (27.2%) and the paravertebral region (13.6%). Most patients reported a painless slow-growing mass with normal overlying skin. Most (90.2%) cases were treated by surgical excision and fine-needle aspiration.CONCLUSIONS: Primary muscle hydatid cyst should be considered in the differential diagnosis in cystic masses of the muscular system without pain and localized enlargement of soft tissue, especially in endemic areas. Hydatid cyst should be investigated using serological tests and imaging modalities. If possible, total surgical excision of hydatid cyst in the muscle should be performed.

Cysticercosis of the masseter.

Cysticercosis of the oral cavity is a very rare soft tissue lesion and very few cases have been reported worldwide. Here we report a case of a cysticercous cellulosae within the masseter muscle which was diagnosed with the help of high resolution ultrasonography (USG) and ultrasound guided fine needle aspiration cytology (FNAC) and managed conservatively using oral antiparasitic medication. Cysticercosis is not commonly considered in the diagnosis of swellings of the head and neck and this is the reason why they are of utmost interest to the practitioner and have to be studied.

Cysticercosis of masseter.

Cysticercosis is a parasitic infestation caused by the larval stage of Taenia solium, a cestodic paratise. It is a common disease in developing countries where it is also endemic. The most commonly infested body organs include subcutaneous tissues, brain and skeletal muscles. It is interesting to note that oral lesion of cysticercosis is a rare event. Here we report an isolated lesion of cysticercosis in the masseter muscle.

Hidatidosis primaria de la musculatura de la pierna que simula un caso de fasceítis eosinofílica: reporte de un caso / Hydatid cyst of the soleus muscle: report of one case

Hydatid cysts may occasionally be confused with soft tissue tumors such as sarcomas. We report a 43 years oíd female living in a rural zone, presenting with a painful tumor in her left leg. A CAT sean showed the presence of a solid-eystic lesion in the left soleus muscle. A biopsy of the zone was informed as eosinophilic fasceitis and steroids were indicated. Two months later a new CAT sean showed that the lesion was increasing in size. An IgG for hydatidosis was positive. The patient was subjected to a cystectomy and the pathology report informed a hydatid cyst.

En nuestro país la hidatidosis sigue siendo un importante problema de salud pública. Generalmente compromete el hígado y el pulmón, sin embargo, se han reportado casos con compromiso de diversos órganos, como bazo, peritoneo y otras ubicaciones. Excepcionalmente puede presentarse como un tumor de partes blandas simulando un sarcoma u otro tumor. Presentamos un caso clínico de una paciente con hidatidosis de la musculatura de la pierna derecha tratado en el Hospital Base Osorno, que simuló una fasceítis eosinofílica; además se revisa el estado del arte de la hidatidosis muscular.

Heterosporis anguillarum infections in farm cultured eels (Anguilla japonica) in Korea

Ten eels (Anguilla japonica) from a fish farm in Korea were examined and diagnosed with a Heterosporis infection. The gross lesions on the trunk were uneven and the concave parts were pasty. Histopathologically, lyses of the trunk muscles, degenerative muscle fibers and the scattered spores were observed. The sporophorocyst (SPC) contained several spores with a variety of shapes. Some SPC were disrupted and the spores in the SPC were scattered in the muscle tissues. Macrophages existed near the scattered spores. Electron microscopy revealed special structures such as sporophorocyst containing various developmental parasitic stages such as meronts, sporonts, sporophorous vesicles and spores.

Muscular hydatidosis: a report of 3 cases

Hydatidosis or cystic echinococcosis is an important zoonotic parasitic disease caused by a small taenid-tape worm [Echinococcus granulosus]with worldwide distribution, particularly in developing countries where many rural inhabitants live under poor sanitary conditions. The majority of hydatid cysts are located in liver and lungs and muscular hydatid cysts are rare. This is a report of three muscular hydatid cysts from Ahvaz, southwestern part of Iran. The first patient was a 64-year-old man with liver and left thigh cysts. The muscular cyst was measured 3 ' 3 cm in diameter. The second case was a 32 year male with left gluteal muscle mass of firm consistency measured 3 ' 3 ' 2 cm. The third case was an eighty-year old male with a soft mass tissue and painless in the left thigh measured 5 ' 5 ' 8 cm. Complete excision of muscle cysts was done and histopathological examination of specimens confirmed the hydatid cyst. Cysts of cases 1 and 2 were fertile with laminated and germinal layers and protoscolices and case 3 was unfertile. In the third case laminated and germinal layers were observed without any protoscolices

Miopatia pseudo-hipertrófica por cisticercose: registro de caso / Pseudohypertrophic myopathy due to cysticercosis: a case report

O caso de uma paciente com aumento de volume das pernas, dor discreta e dificuldade para deambular é descrito. A eletromiografía mostrou potenciais de unidades motoras gigantes com padräo de interferência completo. A biópsia dos gastrocnêmios direto e esquerdo revelou presença de um cisticerco além de hipertrofia das fibras musculares e infiltrado inflamatório. A revisäo da literatura demosntra que apenas 12 casos de miopatia pseudo-hipertrófica causada por cisticeros foram relatados e que a incidência é duas vezes maior no sexo masculino do que no feminino. Em cerca de metade dos casos há história de epilepsia. Dor e fraqueza muscular discretas säo frequentes. Em geral a pseudo-hipertrofia ocorre nas cinturas escapular e pélvica simultaneamente. Miotonia é achado raro e nódulos subcutâneos estäo presentes na maioria dos pacientes. Nosso paciente difere dos outros relatados na literatura por apresentar pseudo-hipertrofia restrita às pernas, principalmente à esquerda, com eletromiografia revelando potenciais de unidades motoras gigantes. A patogênese desta condiçäo é discutida e o diagnóstico diferencial deve ser feito com distrofia muscular pseudo-hipertrófica, triquinose, miotonia congênita, hipotireoidismo, amiloidose e a forma juvenil da glicogenose do tipo I (doença de Pompe)

Sarcocystis booliati n.sp. and a parasite of undetermined taxonomic position, Octoplasma garnhami n. gen. n. sp., from the moonrat, Echinosorex gymnurus.

Sarcocystis booliati n.sp. is described from the moonrat Echinosorex gymnurus (Mammalia, Insectivora) from West Malaysia. The cysts are very thin-walled, not visible to the naked eye, and have no trabeculae or cytophaneres. They are found in skeletal but not heart muscle. The zoites are small, 5-8 by 2-3 mum with a mean of 6.5 by 2.2 mum, in dry fixed smears. Octoplasma garnhami n.gen. n.sp., a parasite of undetermined taxonomic status but belonging to the Coccidiasina, Apicomplexa, is also described from the same host. Only schizononts and pseudocysts with typically 8 zoites, have so far been seen in monocytes of the spleen and liver. The zoites are large, 15 by 3 mum and have a distinct nucleolus even in dry-fixed smears.