Pigmented medulloepithelioma of the optic nerve: A challenging diagnostic entity

Because of its rarity, the diagnosis of optic nerve medulloepithelioma poses a real diagnostic challenge. Medulloepithelioma is a congenital tumor that derives from the primitive medullary epithelium present in the neural tube and the optic vesicle. Its classical location is the ciliary body. Cases of retinal or optic nerve locations have been rarely reported in the literature. Only 11 cases have been published in the English literature. Herein, we report the case of a 2-year-old boy who underwent enucleation of the right eye for a presumed diagnosis of right-eye retinoblastoma, based on the presence of leukocoria on ophthalmological examination. Pathological examination showed an optic nerve medulloepithelioma. A review of the literature is also discussed in our work.

[Embolization of a false arterial aneurysm in a patient living with one kidney: about a rare complication of percutaneous nephrolithotomy]

La néphrolithotomie percutanée s’accompagne d’un risque de complications en particulier hémorragiques, qui en fait une technique potentiellement invasive. Nous rapportons le cas d’une patiente de 70 ans, traitée auparavant pour néphrolithotomie percutanée d’une lithiase sur un rein unique gauche. Une hématurie persistante de moyenne abondance est apparue il y a 2 mois et demi, et qui a motivé à la réalisation d’une tomodensitométrie découvrant un faux anévrisme intra rénal polaire inférieur, d’origine iatrogène. Il a nécessité une embolisation sélective efficace à la colle biologique.

Synchronous colonic adenoma and intestinal marginal zone B-cell lymphoma associated with Crohn's disease: a case report and literature review

Background

Lymphoma and dysplasia are rare complications of long-standing Crohn’s disease. We report an exceptional case of a synchronous intestinal marginal zone B-cell lymphoma (MALT lymphoma) and colonic adenoma in a Crohn’s disease patient.

Case presentation

A 50-year-old male patient presented with right lower quadrant for the last 9 months. He also had associated weight loss and diarrhea alternating with constipation. Ileo-colonoscopy revealed a pseudopolypoid appearance of the colonic and ileal mucosa with many discontinuous ulcerations with a 3 cm sessile polypoid mass at 17 cm from the anal verge. Histological examination of the polypoid lesion revealed an adenoma with high grade dysplasia, while the biopsies of colonic mucosa showed histologic features of Crohn’s disease. Abdominal computed tomography scan (CT scan) and magnetic resonance imaging (MRI) showed circumferential wall thickening of the colon and ileum, enlarged mesenteric lymph nodes and a sessile polypoid mass of the rectosigmoid junction. The patient was scheduled for an ileocoletectomy with resection of the upper rectum and ileorectostomy.

The histological examination of the resected segment showed histologic features of Crohn’s disease, a recto-sigmoid polyp with high grade.

dysplasia and extensive small lymphocytic infiltrate in both colonic and ileal wall which is strongly stained by CD20 and BCL2. The diagnosis of MALT lymphoma with adenoma on a background of Crohn’s disease was made.

The patient successfully completed 8 cycles of Rituximab+ chlorambucil chemotherapy.

Nowadays the patient is asymptomatic without evidence of lymphoproliferative recurrence 10 months after surgery.

Conclusion

We report the first case in the literature of Malt lymphoma with colonic adenoma associated with Crohn’s disease, and discuss his unique macroscopic and histological features in a patient.

Without immunosuppressive therapy.

[Ectopic thyroid: the role of thyroid scan]

Ectopic thyroid is a rare malformative disease. We report an additional case of ectopic right thyroid lobe, detected during CT scan evaluation of a left lateral cervical mass.

[Ileal duplication revealed by a perforation in adults ]

Les duplications intestinales sont des malformations digestives rares (0,2 % des malformations de l’enfant). Elles sont diagnostiquées généralement avant l’âge d’un an, mais elles peuvent rester asymptomatiques et diagnostiquées à l’âge adulte. Le diagnostic est fait le plus souvent lors de laparotomie faite en urgence devant une complication. Elles sont traitées par résection chirurgicale.