Nodular colitis: endoscopic image an unusual finding.

An 82-year-old male with a history of high blood pressure, COPD, chronic myeloid leukemia, and stage-4 chronic renal failure. Admitted to hospital for lower-limb cellulitis and severe COPD exacerbation, he received antibiotic therapy and bronchodilators. During his hospital stay he developed severe anemia and had an hematochezia event with no diarrhea.

[Low grade fibromixoid sarcoma: a purpose of 3 cases and review of the bibliography].

Background: Low grade fibromyxoid sarcoma or tumor Evans is a variety of soft tissue sarcoma that represents 1% of all malignancies. More common in limbs and trunk (50%), we present 3 new cases of retroperitoneal reviewing their characteristics and performing a literature review.

Clinical Case: In the retroperitoneal location highlights the poor specificity of clinical symptoms, demonstrating, according to their growth and size, as an abdominal tumor, usually painless, or by compression and/or invasion of nearby structures.

Spontaneous malignant transformation of a supratentorial pilocytic astrocytoma.

Pilocytic astrocytoma (PA) is a circumscribed neoplasia considered as a grade I astrocytoma by the World Health Organization. Its most common location is the cerebellum and it develops during the first two decades of the life. Prognosis is mostly excellent if gross-total resection can be achieved, with 10-year survival rates of up to 80%.

[Presentation of 2 new cases of cutaneous angiomyolipomas and literature review].

We present 2 new cases of cutaneous angiomyolipomas with very similar characteristics, located in the postauricular region of 2 women aged 58 and 52 years. The lesions measured 1.5 cm and 1 cm across and had been present for 5 and 2 years, respectively.

[Castleman's disease of the neck].

Castleman's disease is an uncommon benign lymphoid disorder usually found in the mediastinum (70 %) which is thought to be due to antigenic hyperstimulation of unknown origin. Two histological subtypes may be found in relation to two different clinical patterns with clinical and therapeutic implications. Diagnosis is frequently accomplished only by histological analysis after surgery since no specific features have been found in imaging studies.

[Palatine tonsil lipoma].

Lipomatous tumors represent an unfrequent cause for upper aerodigestive tract neoplasms, specially concerning the palatine tonsils, that should be included in their differential diagnosis. A case of palatine tonsil lipoma in a 11 year-old girl is reported and a revision of the available literature and some considerations about this condition are provided.

[Malignant recurrence of a penile cutaneous horn].

Objectives: To report one case of malignant recurrence of a cutaneous horn of the glans penis.

Methods: We report the case of a 66-year-old male patient presenting with penile discomfort over several months. Physical examination showed a corneal lesion in the glans-penis, the biopsy of which was reported as hyperkeratosis on top of pseudoepiteliomatous hyperplasia.