[Hydatid cyst of the psoas muscle: about a case]. / Kyste hydatique du muscle psoas: à propos d'un cas.

The psoas muscle is an uncommon location for hydatid cyst. Our study reports the case of a 32-year-old patient with hydatid cyst located at the left psoas muscle. Ultrasound, CT scan as well as a positive hydatid serology contributed to the preoperative diagnosis. The patient underwent left pararectal incision (Jalaguier). Microscopic examination of the hydatid liquid pellet highlighted scolices and many hooks confirming the diagnosis. The evolution was good with no recurrence after surgical treatment.

Primary extrahepatic alveolar echinococcosis of the lumbar spine and the psoas muscle.

Alveolar echinococcosis (AE) of human being caused by Echinococcus multilocularis is a rare but important zoonosis especially in tempered zones of middle Europe and Northern America with endemic character in many countries. Due to the long incubation period, various clinical manifestations, critical prognosis, and outcome AE presents a serious and severe disease. The primary focus of infection is usually the liver. Although secondary affection of visceral organs is possible extrahepatic AE is highly uncommon. Moreover, the involvement of bone and muscle presents with an even lower incidence. In the literature numerous cases on hepatic AE have been reported. However, extrahepatic AE involving bones and/or muscles was described very rarely. We report a case of an 80-year-old man with primary extrahepatic alveolar Echinococcosis of the lumbar spine and the psoas muscle. The etiology, diagnosis, differential diagnoses, treatment options and outcome of this rare disease are discussed in context with the current literature.

Lesion of the femoral nerve caused by a hydatid cyst of the right psoas muscle.

INTRODUCTION: Hydatidosis is a human disease caused by the larval form of Echinococcus granulosus. All organs in the human body may be affected by hydatid disease, but excluding liver and lungs, all other organs are considered as uncommon locations. Hydatid disease located in the psoas muscle is uncommon. CASE OUTLINE: The authors present a 36-year-old male living in endemic areas of Serbia, admitted due to pain and weakness of the right thigh and weight loss. Duration of symptoms was one year. CT and MRI revealed a big cystic mass (20 cm long) in the right psoas muscle. Neurological investigation showed a loss of function of the right femoral nerve. Serology for Echinococcosis was negative. Surgery was indicated and performed by median laparotomy. Total excision of the cyst was done. Pathohystology confirmed the nature of the cyst. Three years after operation the patient was without any signs of disease relapse. CONCLUSION: Echinococcal disease of the psoas has been very rarely reported, sometimes associated with paraspinal disease and often with vertebral involvement. Cystic or complex retroperitoneal tumour, pyogenic abscess of the psoas and even tuberculosis should be considered in the differential diagnosis. Treatment of choice is surgery. The greatest danger for the patient is dissemination and anaphylactic reaction. Also, compression of adjacent organs may produce significant morbidity.

Quiste hidatídico en el músculo psoas / Hydatid cyst in the psoas muscle

La hidatidosis es una zoonosis endémica en nuestro país, presentándose en la mayoría de los casos como quistes hidatídicos hepáticos y pulmonares, siendo el músculo psoas una localización infrecuente para esta enfermedad. Los autores presentan un caso clínico de quiste hidatídico en el músculo psoas tratado mediante resección total e inyección de agentes escolicidas, usando el abordaje extraperitoneal.

Hydatidosis is an endemic zoonosis in our country. It presents in most cases as hepatic or pulmonary cyst, being the psoas muscle an uncommon location of hydatid cyst. The authors present a case of hydatid cyst developed in the psoas muscle, treated with total resection and escolicidal agent injection using an extraperitoneal approach.

[Primary hydatid cyst of the psoas muscle: description of 9 cases in Tunisia and review of the literature]. / Kyste hydatique primitif du psoas: 9 cas tunisiens et revue de la littérature.

The psoas muscle is an uncommon location for hydatid cyst accounting for only 1 to 3% of cases. The purpose of this report is to describe the epidemiologic, clinical, paraclinical, and therapeutic features of primary hydatid cyst of the psoas muscle. A retrospective study conducted in Surgery Department A at the Rabta Hospital in Tunisia compiled a total of 9 cases of primary hydatid cyst of the psoas muscle treated between 1980 and 2006. There were 6 men and 3 women with a mean age of 42.8 years. Symptomatology was nonspecific with pain in 6 cases. Discovery was coincidental in two cases. Clinical examination detected a mass in the presents of an abdominal mass in 7 cases. Radiologic findings (ultrasound and/or CT scan) confirmed diagnosis in 8 cases. In one case a mistaken diagnosis of psoas muscle abscess was made in a patient with an infected hydatid cyst. Serological tests were performed in 4 cases and were positive in 3. All patients underwent surgical treatment. The extraperitoneal approach (Leriche) was used in 7 cases and the transperitoneal approach via median laparotomy in 2. In all cases the surgical procedure consisted of partial cystectomy leaving a part of the pericystic against neurovascular structures. There was no operative mortality. The only postoperative complication was urinary infection in one patient. Mean follow-up was 2.5 years. One local recurrence was observed 4 years after surgical treatment and required reoperation.

Multiple unusual locations of hydatid cysts including bladder, psoas muscle and liver.

Our case concerns 66-year-old female with a multiple unusual locations of hydatid cysts including bladder, psoas muscle and liver. Coexistence of hydatid cysts in these localizations has not been previously reported. The diagnosis of vesical hydatid cyst was facilitated by the coexistence of other echinococcosis locations. Treatment consists of the excision of the cysts in the same session without any postoperative anthelmintic drugs. In a two-year follow-up no recurrence has occurred.

[Hydatid cyst of the psoas muscle]. / Kyste hydatique du muscle psoas.

While hydatid cysts may occur in any area of the body, isolated muscular localizations are rare. Only some thirty-odd such cases have been reported. The authors report the case of a 38-year-old man who consulted for isolated abdominal pain in the left iliac region. Radiographic study showed a simple hydatid cyst of the left psoas muscle. The cyst was removed by extraperitoneal transverse laparotomy. Crural nerve palsy occurred but regressed after 2 months and had not recurred after 24 months. Ultrasonography is the preferred method for detecting muscular hydatid cysts. No other diagnostic tool is needed. Surgical treatment remains best. We recommend the unroofing technique over pericystectomy. Other cyst localizations must be sought before any therapeutic decision, since they determine the initial surgical management and allow consideration of other therapeutic methods to be combined with surgery.

Unusual site of recurrent musculoskeletal hydatid cyst: case report and brief review of the literature.

A case of a large multiplex recurrent hydatid cyst involving the left gluteal muscle and the left iliopsoas, accompanied with degeneration of the musculature of the left upper leg is presented along with a review of the relevant literature. Very few such cases have been reported worldwide. The presented case is also distinguished by the involvement of muscles of distant anatomic areas.

Primary hydatid disease of sacrum affecting the sacroiliac joint: a case report.

STUDY DESIGN: A case report of hydatid disease of the spine. OBJECTIVE: To describe an unusual case of hydatid disease of the sacrum affecting the sacroiliac joint and to discuss imaging, differential diagnosis, and treatment. SUMMARY OF BACKGROUND DATA: Hydatidosis or echinococcosis affecting the spine is rare and has a characteristic geographic distribution. Signs of sacroiliac joint involvement and accompanying neurologic deficits cause difficulties in differential diagnosis of this rare condition. METHODS: A case of 38-year-old female patient with low back pain and sciatica was presented. RESULTS: Plain radiographs, computed tomography, and magnetic resonance imaging scans revealed destructive expansive lesion located on the right sacrum and extended through the right sacroiliac joint. Surgical enucleation of the cysts was performed together with mebendazole treatment and histopathologic examination confirmed hydatidosis. CONCLUSION: This unusual disease should be kept in mind in the differential diagnosis of sacroiliac pain and sciatica, especially in endemic areas.

Trichinosis of psoas muscle.

There are isolated case reports of Trichinella spiralis infestation in animals from India. We report the first case in man from India. The nematode was discovered incidentally during drainage of psoas abscess.

[Hydatid cyst of the psoas muscle. Apropos of a case]. / Kyste hydatique du psoas. A propos d'un cas.

The authors report a rare case of hydatid cyst of the psoas muscle in a 28-year-old woman, operated for vertebrospinal hydatid cyst. The patient presented with a left iliac fossa mass. Ultrasonography and computed tomography contributed to the preoperative diagnosis, despite negative hydatid serology. A retroperitoneal approach by left lumbotomy with partial pericystectomy was performed. In the light of this case, the authors discuss the diagnostic and therapeutic problems raised by hydatid cyst of the psoas muscle.

[Hydatid cyst of the psoas muscle]. / Les kystes hydatiques du muscle psoas.

Hydatid cysts in the psoas muscle are unusual. The authors report a case of a hydatid cyst which had developed within the psoas muscle and was detected from a mass in the left iliac fossa which was diagnosed before surgery by ultrasound and a CT scan, which remain the preferred primary examinations for the investigation of masses of this type. The authors discuss the various possible clinical and paraclinical contexts and recommend total pericystectomy of a closed cyst as the best treatment following extraperitoneal iliac surgical opening.