A case of an isolated hydatid cyst in the right kidney.

Isolated renal hydatid cyst is rare. Preoperative diagnosis may be difficult because clinical, biochemical and radiologic findings can not eliminate the diagnosis of renal cancer in its cystic form. Open surgery is traditionally the gold standard.

Telangiectatic osteosarcoma of the rib: a rare entity and a potential diagnostic pitfall.

Osteosarcoma (OS) is a common primary malignant tumor of bones that produces osteoid matrix. Telangiectatic osteosarcoma (TOS) is a rare variant of OS. It affects the long bones especially the lower end of femur and the upper ends of tibia and humerus, a distribution similar to the conventional osteosarcoma.

An unusual tumour of the lung.

We report a case of a 51-year-old woman with a solitary mast cell tumour of the lung, a rare neoplasm with only three previously-reported cases reported in the literature. Unlike previous cases, the tumour in the present case was bulky, measuring 14 cm in diameter and budding into the segmental bronchus. Histologically, it showed proliferation of typical metachromatic mast cells intermingled with undifferentiated cells with a ratio of 3:1.

[Eosinophilic cellulitis: About a new pediatric case].

Wells' syndrome or "eosinophilic cellulitis" is characterized by clinical features of cellulitis and histological pictures of eosinophils infiltrate of the dermis with some « flame » figures. This is a very rare disease in the pediatric age. We report the case of a 14-month-old boy, presented with two farms painful nodular brownish lesions in the thigh and back of the foot as well as multiple erythematous papular and vesicular lesions on the forehead, cheeks, limbs and trunk.

Malignant peripheral nerve sheath tumor of the superficial cervical plexus with parotid extension.

Introduction: Cervical locations of malignant peripheral nerve sheath tumor (MPNST) are rare, at less than 1% of malignant tumors of this region.

Case Report: A 53-year-old woman presented with a lateral cervical swelling involving the parotid region. Histology was in favor of MPNST.

[Mixed breast carcinoma with melanocytic differentiation in a man].

Introduction: Male breast cancer is rare; the lobular type is exceptional. Only one case of mixed ductal and lobular type is reported in the literature. This is the first report on a mixed ductal and lobular carcinoma with melanocytic differentiation in a man.

Type 2 autoimmune hepatitis overlapping with primary sclerosing cholangitis in a 10-year-old boy.

Background: Overlap syndrome of autoimmune hepatitis (AIH) and primary sclerosing cholangitis (PSC) is considered when the patient presents with the diagnostic criteria of both diseases at some stage of the medical history, either simultaneously or consecutively.

Aim: To report on a new case of overlap syndrome and describe the clinical presentation, progression, radiological studies, histological characteristics, and therapeutic options of this rare association.

Case Report: A 10-year-old boy presented with jaundice and hepatosplenomegaly.

Genetic polymorphisms of NQO1, CYP1A1 and TPMT and susceptibility to acute lymphoblastic leukemia in a Tunisian population.

Acute lymphoblastic leukemia (ALL) is the major pediatric cancer in developed countries. The etiology of ALL remains poorly understood, with few established environmental risk factors. These risks were influenced by co-inheritance of multiple low-risk genetic polymorphisms such as variants within cytochrome P450A1 (CYP1A1), NADPH: quinone oxidoreductase (NQO1) and Thiopurine methyltransferase (TPMT) genes.

[Abrikosoff's tumor: a clinicopathologic study of nine cases].

Background: Abrikossoff's tumour or granular cell tumor or is a benign neurogenic tumour. It is ubiquitous with the most frequently affected site is the head and neck region.

Aims: To report a series of granular cell tumors and to discuss its clinicopathologic features and histogenesis.

[Desmoplastic fibroma of the skull in an infant].

Desmoplastic fibromas are uncommon osseous tumors that seldom involve the skull. These tumors are histologically benign but locally aggressive with a propensity for recurrence if resection is partial. To our knowledge, only 16 cases have been reported in the literature, seven of which concerned children.

[Scalp metastasis from small cell carcinoma of the rectum: an unusual case].

Background: Cutaneous metastasis of rectal carcinoma is a rare event. It occurs in 4% of all patients with rectal cancer. Skin metastasis of rectal cancer are usually detected near the initial tumor, especially in the periumbilical region; but they rarely occur in the scalp.

Unusual cause of intestinal obstruction: ileal endometriosis.

Endometriosis is a common condition affecting the female genital tract, but involvement of the ileum is very rare. Its symptoms are vague and are similar to other benign and malignant disorders, and radiographic findings lack specificity. We report the case of a 23-year-old woman presenting with acute intestinal obstruction for whom preoperative diagnosis favoured acute appendicitis.

[Papillary carcinoma arising from dyshormonogenetic goiter].

Introduction: Dyshormonogenetic goiter is a genetically determined thyroid hyperplasia due to an enzyme defect in thyroid-hormone synthesis. Malignant transformation is one of the most serious complications, rarely reported in the literature.

Observation: We report a new case of a 13-year-old boy with goitrous hypothyroidism who consulted for a voluminous goiter.

The value of intermittent cervical traction in recent cervical radiculopathy.

Objective: Our objective is to assess the effect of mechanical and manual intermittent cervical traction on pain, use of analgesics and disability during the recent cervical radiculopathy (CR).

Methods: We made a prospective randomized study including patients sent for rehabilitation between April 2005 and October 2006. Thirty-nine patients were divided into three groups of 13 patients each.

[Frantz's tumor: anatomoclinical study of six Tunisian cases].

Solid and pseudopapillary tumour (Frantz's tumour) is a rare low-grade neoplasm of the pancreas. We report six new cases. Our objective is to specify clinical and pathological characteristics of this rare neoplasm and to discuss its histogenesis.

[Mucinous cystadenoma of the kidney].

Mucinous tumors of the kidney are rare. The pathogenesis of these lesions is controversial. We report the observation of a 31-year-old woman presented with right-flank pain and hematuria.