[Colonic ulcers associated with taking Kayexalate(®) (sodium polystyrene sulfonate): about two cases]. / Ulcérations coliques associées à la prise de Kayexalate(®) (polystyrène sulfonate de sodium) : à propos de deux observations.

We report two cases of patients with chronic renal failure showing rectal bleeding due to digestive ulcers, associated with Kayexalate(®) alone. Kayexalate(®) crystals correspond to a typical histological picture and it is important to know how to identify them in order to discuss a possible pathogenicity.

Acquired Lymphangioma Circumscriptum of the Penis Treated by Electrocoagulation.

Lymphangioma circumscriptum (LC) is a vascular malformation resulting from a developmental anomaly of the superficial lymphatic system of the skin. It is benign albeit uncommon. LC less frequently occurs on the penis. LC may be either congenital or acquired. Acquired cases appear to develop most frequently after interventions in the area or underlying pathologies. It is often mistaken for genital warts or molluscum contagiosum. We report here about a case of LC misdiagnosed with genital warts for 15 years. A biopsy eventually provided histopathological evidence. Various treatments are available for LC including surgical excision (which is the gold standard), CO2 laser ablation, cryotherapy, flash lamp pulsed dye laser, and electrocoagulation therapy. For our patient, one session of electrocoagulation was performed under local anesthesia. This treatment allowed an almost complete regression of the lesion without recurrence after 3 years of follow-up. Electrocoagulation may be an efficient treatment for LC in locations that may be surgically challenging such as penis.