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Head and Neck


Lemon shaped skull
Organ: Skull
Differential Dx:
  • Myelomeningocele
  • Encephalocele

  • Cloverleaf skull
    Organ: Skull
    Differential Dx:
  • Thanatophoric dysplasia

  • Lacunar skull
    Organ: Skull
    Differential Dx:
  • Myelomeningocele
  • Encephalocele

  • Wormian bones
    Organ: Skull
    Pneumonic: OCH CPPD
    Differential Dx:
  • Osteogenesis imperfecta
  • Cretinism
  • Hypophosphatasia
  • Cleidocranial dysostosis
  • Pyknodysostosis
  • Progeria Down syndrome

  • Calvarial thickening
    Organ: Skull
    Differential Dx:
  • Paget
  • Sickle cell disease
  • Thallasemia
  • Fibrous Dysplasia

  • Osteoporosis circumscripta
    Organ: Skull
    Differential Dx:
  • Lytic phase of Paget disease

  • Cotton wool skull
    Organ: Skull
    Differential Dx:
  • Mixed phaseof Paget disease

  • Salt and pepper skull
    Organ: Skull
    Differential Dx:
  • Hyperparathyroidism

  • Lucent lesions
    Organ: Skull
    Differential Dx:
  • EG
  • Epidermoid
  • Mets
  • Myeloma
  • Lymphoma
  • NF

  • Petrous apex mass
    Organ: Temporal Bone
    Pneumonic: CCMMMS
    Differential Dx:
  • Cholesterol granuloma
  • Chondrosarcoma
  • Mucocele
  • Multiple myeloma
  • Metastasis
  • Schwannoma

  • Jugular foramen mass
    Organ: Temporal Bone
    Pneumonic: GM MS
    Differential Dx:
  • Glomus jugulare tumor
  • Meningioma
  • Metastases
  • Schwannoma

  • Lacrimal gland mass
    Organ: Orbits
    Pneumonic: MELD P
    Differential Dx:
  • Metastasis
  • Epithelial neoplasms
  • Lymphoma
  • Dermoid
  • Pleomorphic adenoma

  • Globe abnormality
    Organ: Orbits
    Pneumonic: R PIC R
    Differential Dx:
  • Retinoblastoma
  • PHPV
  • Infection
  • Coats disease
  • Retrolental dysplasia

  • Optic nerve mass
    Organ: Orbits
    Differential Dx:
  • Meningioma
  • Glioma

  • Optic nerve tram tracking
    Organ: Orbits
    Pneumonic: MLMSP
    Differential Dx:
  • Meningioma
  • Lymphoma
  • Metastatic disease
  • Sarcoid
  • Pseudotumor

  • Lacrimal mass
    Organ: Orbits
    Differential Dx:
  • Epidermoid
  • Mucocele

  • Oral cavity mass
    Organ: Oropharynx
    Pneumonic: DHL RIPS
    Differential Dx:
  • Dermoid
  • Hemangioma
  • Lingual thyroid
  • Ranula
  • Infection
  • Pleomorphic adenoma, SqCC

  • Pharyngeal mass
    Organ: Oropharynx
    Differential Dx:
  • Thornwaldt cyst
  • Abscess
  • Pleomorphic adenoma
  • SqCC
  • Lymphoma

  • Masticator space mass
    Organ: Oropharynx
    Differential Dx:
  • Abscess
  • Rhabdomyosarcoma
  • SqCC
  • Lymphoma

  • Carotid space mass
    Organ: Neck
    Differential Dx:
  • Paraganglioma
  • Schwannoma
  • Neurofibroma
  • Metastases from SqCC
  • Lymphoma

  • Cystic neck mass
    Organ: Neck
    Differential Dx:
  • Second branchial cleft cyst
  • Thyroglossal duct cyst
  • Cystic hygroma
  • Laryngocele
  • Dermoid
  • Thymic cyst

  • Fetal posterior neck mass
    Organ: Neck
    Differential Dx:
  • Cystic hygroma
  • Encephalocele

  • Pseudolesions
    Organ: Skull
    Differential Dx:
  • Parietal foramen
  • Venous lake
  • Arachnoid granulation

  • Solitary benign lytic skull lesions
    Organ: Skull
    Differential Dx:
  • Epidermoid cyst
  • Atretic parietal cephalocele
  • Hemangioma

  • Solitary lytic aggressive skull lesions
    Organ: Skull
    Differential Dx:
  • Plasmocytoma
  • Hemangiopericytoma
  • Lymphoma

  • Solitary sclerotic skull lesions
    Organ: Skull
    Differential Dx:
  • Fibrous dysplasia
  • Osteoma
  • Meningioma

  • Multiple calvarial lesions
    Organ: Skull
    Differential Dx:
  • Hyperparathyroidism
  • Metastases
  • Multiple myeloma
  • LCH