PATHIST HRLM-TEM TEACHING CASES		PATHIST MOAR -MET CASOS DE ENSE˜NANZA.
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CASE # 13		CASO # 13
WHAT IS YOUR DIAGNOSIS? Identify the numbered structures. See the answers  by clicking on LESIONS & DIAGNOSIS.		CUAL ES SU DIAGNOSTICO? Identifique las estrcuturas numeradas. Vea las respuestas  pulsando sobre LESIONES & DIAGNOSTICO.
CLINICAL INFORMATION: 26 year old man with intermittent gross hematuria and upper respiratory tract infections.		INFORMACION CLINICA: Hombre de 26 anos con hematuria macroscopica intermitente e infecciones repetidas del tracto respiratorio.
Fig 1: Paraffin H&E.		Fig 2: Paraffin PAS.
Fig 3: FM IgA.		Fig 4: HRLM
Fig 5: HRLM		Fig 6: HRLM
Fig 7: HRLM		Fig 8: HRLM
LESIONS and DIAGNOSIS 1. Wide mesangium. 2. Mesangial deposits. 3. Segmental scar. DIAGNOSIS: MESANGIAL (IgA, Berger's) GN.
REFERENCES: Mesangial GN.
COMMENT: Mesangiopathic GN or Mesangial GN is group of glomerulopathies with mesangial deposits and mesangial cell proliferation. The deposits may be IgA, IgG, C3, IgM, C1q, others but, the mporphologic pattern is the same. I do not believe there is a enough clinical evidence to divide this group in separate diseases just because they have different immuno protein deposits.