Anatomia do Umbigo
- Margem: anel umbilical
- Goteira umbilical → prega - dermatoses intertriginosas
- Monte umbilical
Developmental abnormalities
- Persistence of the urachal canal
- Urine leak
- Failure of urachus to close
- Persistence of the omphalomesenteric duct
- Omphalitis
- Fecal matter elimination
- Polyps
- Botryomycoma
- Presence of sterile umbilical serosity
- Histology → intestinal mucosa
Tumors (benign and malignant) and pseudotumors
- Omphalocele → umbilical hernia
- Foreign bodies
- Rare
- Talc granulomas in the past
- Omphaloliths or omphalokeratoliths
- Chalky concretions that can go unnoticed for years, only becoming apparent in the event of inflammation, infection or ulceration
- Umbilical polyps
- Suggests a developmental abnormality
- Pyogenic granuloma (botryomycoma)
- Pode ser “sentinela” de malformação subjacente
- Granuloma Piogénico | Hemangioma capilar lobular | Botryomycoma
- Endometrioma umbilical
- Endometriose: presença de tecido endometrial funcional (hormono-dependente) fora da cavidade uterina
- Envolvimento cutâneo em 1%
- Painless, firm, non-ulcerated, blue-black tumor of varying size with possible bloody discharge in sync with the menstrual cycle
- Abordagem: U/S or MRI
- Tratamento: cirúrgico
- Umbilical metastases
- Sister Mary Joseph Nodule
- ++ women 50-70yo
- Gastric carcinoma > colon carcinoma > ovarian > pancreatic carcinoma > endometrial
- Histology: adenocarcinoma >> carcinoid
- First manifestation in 15-50%
- When no primary is found: considered primary degeneration of embryonic remnants
- Primary tumors
- Adenocarcinoma of urachus
- Basal cell carcinoma
- Squamous cell carcinoma
- Melanoma
- Extra mammary Paget Disease
Inflammatory
Omphalitis (syndrome)Other lesions
- Navel pulled upward during pregnancy and downward during ascitis
- Bluish or yellowish discoloration (Cullen’s sign) → if hemoperiteneum (ectopic pregnancy), acute pancreatitis, after liver biopsy
- Absence of umbilicus → congenital dystrophic epidermolysis bullosa
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